om646 engine problems

and operation, along with removal and installation of components. Manufacturer Part Number 006.750. Weak spots, Issues & problem areas on the OM646. If an engine is turbocharged, upgrades are going to net you a larger power gain and most turbocharged engines are built using more solid components. He made his debut on the C-class W202 in 1998. Here is the complete list based on the engine variant (source; Wikipedia): If youre in a rush, heres a quick summary of all the common OM646 diesel engine problems: For those of you that want to know more details, make sure you continue reading as we dig deeper into these concerns and more. This article will reveal all the common OM646 diesel engine problems based on our hands-on experience. Our advertising partners also use cookies. The intake and exhaust durations will alter depending on the chosen camshaft profile, so large engines power gains are on offer for camshaft upgrades. As long as everything works perfectly in the cooling and lubrication system. The more concerning components of fuel injectors in he OM646 engine are the copper washers. However, I dont think its worth buying this model for as low as $1500-$2500. 2 and 3 connecting rods are deformed, liners wear out. The Mercedes 2.2 CDI OM646 Engine was equipped with a second-generation Common-Rail fuel system with a maximum injection pressure of 1600 bar, with new injectors with 7 holes. AMG vehicles from 2007 to 2014. The engine was equipped with a Common Rail 2 fuel system. Design. Some sources report that the shortage affected about 300 cars. Due to the lack of special elements, the whole branch must be changed. Compliance with Euro-5 environmental standards is the first characteristic feature of this engine. Join our forum today and benefit from over 300,000 posts on tuning The Mercedes-Benz W204, also known as the C-Class, was produced from 2007 to 2014. Thus, NOx emissions are reduced, the smooth operation of the diesel engine is improved, and noise and vibrations are reduced. Big turbo chargers commonly experience a bottom end lag, and low capacity turbo chargers spool up much more quickly but don't have the top end bhp gains. Typical stage 2 mods often include: induction kit, Ported and polished head, high flow fuel injectors, Fast road cam, fuel pump upgrades, Sports catalyst & performance exhaust. Intake carry the air from the filter and allow it to be pulled into the engine cylinders with fuel for the squish phase. There is also a coupe-style body called the Sportcoupe. The ecu map and fuel pump and injectors also will say much on the torque gains you'll achieve. Where did the application come from? Glow plugs will need changing now and then. Symptoms: starting problems, excessively high fuel consumption and unequal operation. Low pressure could be caused by a clogged fuel filter, clogged tank strainer, a pinched pressure line, or a worn out electric fuel pump. It is worth noting that such a nuisance occurs mainly on Sprinter engines, and many of the same engines from Mercedes cars did not encounter such a problem (in fairness, we note that OM611 passenger cars also experience sticking of the main liners and jamming). To remove the unit you must first remove the engine covers. Particularly the chain tensioner. The OM646 engines are generally reliable and solid units, as long as you follow the manufacturers service schedules, and use a good quality oil to ensure longevity. Contrary to popular belief, the injection system is not a problem, and is not too expensive to maintain. Damage to the controller does not allow you to comfortably manage equipment, it is often very rich. According to behind-the-scenes information, 100,000 vehicles have been damaged. Engines: OM611 OM612 OM613 OM642 OM646 OM647 OM648 In summary, all gasoline engines can be recommended. Regular oil + filter changes and frequent motorway runs will help to . 2.1 CDI . The more powerful version of the engine uses piezo injectors Delphi. When replacing the fuel filter on the 2.2 CDI OM611 Engine, its housing must be filled with diesel fuel manually. OM646 engine is sold under the 200 CDI and 220 CDI designation and meets A number of solutions included in the TwinPulse name are used. Nozzles break down about 50.000 km. The crankshaft of the 2.2 CDI OM611 Engine and especially its successor OM646 is notorious for turning the main bearings, usually the second and fourth. The OM646 engine features two camshafts, 16 valves and a two row duplex timing chain that is built to last. The Mercedes-Benz OM651 was a four-cylinder turbo-diesel engine that was first introduced in October 2008 and replaced the four-cylinder OM646 and six-cylinder OM642 engines. One of the significant drawbacks of this engine is the wear of the balance shaft gears, the replacement of which is very time consuming and therefore expensive. Double Clutch Contrary to appearances, there are already many cars on the market that look good on the surface and qualify for disposal. The site includes MB Forums, News, Galleries, Publications, Classifieds, Events and much more! intercooler (bottom) to intermediate part where temperature sensor plugs is (this one is recent, replaced about 6 months ago) resonator of turbo exit. Despite the fact that the engine from the Mercedes 2.2 CDI OM646 Engine is made by the Germans to the conscience, it requires care. Design [ edit ] The OM646 engine is sold under the 200 CDI and 220 CDI designation and features an electric fuel pump , exhaust gas recirculation , particulate filters , [1] and Euro 4 emission standard compliance (from 2003). We think this one is common sense, but you'll need to match your fuel injector to the type of fuel your car uses as well. Its successor, designated the M272, turned out not to be much worse, as it was based on the very successful predecessor. Classic cars with converters have 5 or 7 gears. The concern here is if they come out without snapping. You will find helpful articles and videos on a wide variety of cars - Audi, Mercedes, Toyota, Porsche, Volvo, BMW and much more. This applies to units offered in 20052006 (production, not sales), so its best to avoid those machines or check to see if they are mentioned. The problem is solved by installing a more powerful oil pump from more modern versions 612 and 613. Other modifications were later introduced. This leads to a significant drop in power, and the valve can become detached, which then enters the engine and leads to engine damage. Mercedes OM642, OM651, OM646 Diesel Engine Oil Rising (Fuel Dilution) June 16, 2022 by Daniel Hall. In the late nineties the situation changed. LifeOnFour.co is a participant in the Amazon Services LLC Associates Program. The 2.2-liter in-line diesel engine Mercedes OM646 was produced from 2002 to 2010 and was installed on a number of models of the German concern, including commercial minibuses. The low end idle will be very lumpy and irregular, so something you would notice on a track when you drive in the upper third of the rpm band, but on roads this is a serious issue and we've heard from lots of drivers lamenting their decision to add an extreme competition cam profile to their engine. was updated under the EVO name and replaced the The engine doesnt handle short distances well, especially in winter, when its not heated properly. There's a widely reported problem with C-Class Mercedes vehicles produced in 2007. Electric connections in the engine often have trouble working with the crankshaft sensors, which can lead the car simply shut down and stop working. Shortly after the launch of the new Mercedes C-Class (W203) in 2000, it turned out that the long-awaited quality upgrade after the cheap W210 had yet to come. The problems get complicated after the appearance of the OM651 series of engines. Loves high-quality and clean fuel. Most tuners we speak with say to be generous with your flow rate on the injectors. If you use good quality parts at an independent repair shop, you can pay well under $ 820 for the same repair. Detail: Drainage valve seal - keeper with sealing ring Fig. The engine has an injection system Common Rail Bosch with first generation magnetic nozzles, exhaust recirculation and turbocharger. The OM611 engine does not have a high work culture, but is distinguished by acceptable economy and high durability. 2 and 3 connecting rods are deformed, liners wear out. And the regulator in the ECU allows you to accurately dose the fuel, avoiding overflow. Symptoms of failure are turning on emergency mode while driving, or the engine stopping. We see 4 bar air sensors coping with quite large power gains, whereas the OEM air sensor limited power at a much lower level. Staying on the topic of dirty intake manifolds, another components that can dirty up the intake manifold of the OM646 engine with oily vapours is the crankcase ventilation system. motors, Lanchester balancer (to compensate for free inertial forces), Crankcase ventilation system with electrical heating element, Engine control unit with CAN gateway function, CDI-D common rail diesel injection (Delphi), Maximum peak pressure in the combustion chamber up to 165 The Mercedes W203 is one model that is offered in a wide variety of engines, from small and economical units to large V6 engines both petrol and diesel. The 2.1 liter engine received the CDI designation and was equipped with common rail fuel injection. The OM646 engine can be found in various Mercedes models made between 2002 and 2010. Therefore, Common Rail equipment becomes a problem. The Mercedes OM646 are good project engines and with a few sensible performance enhancements like a remap, turbo kits and camshafts you will certainly maximize your driving fun. The area that is quite disturbing to users is electricity. All content is subject to copyright protection - LifeOnFour 2023. Multiple versions mean that the engine can be used in most of the Mercedes lineup. Jump To Article. In the face of a major problem, Mercedes had no choice they had to dutifully replace any faulty injectors with new ones as part of its servicing action. Frequent problems of the Mercedes 2.2 CDI OM646 Engine are badass. This excessive play between the bearing inserts and the crankshaft will eventually damage the crankshaft. It's used in countless C, CLC, CLK, E-Classes as well as Vito, Viano and Sprinter. Unfortunately, suffers from oil spills and leaks. Also it looks like access for the OM654 is much worse than the OM651. This is not the coolest tolerance, but you should not neglect it. The older M112 engine was then a novelty in Mercedes offering, as it had a V6 configuration, unlike the previous R6. More and more users of cars equipped with 2.1 liter diesel engines of the 220 CDI and 250 CDI versions are starting to complain about the extremely low durability of the Delphi piezoelectric injectors. Considering the already significant design advances, the richness of electronics, the high failure rate, the condition of the body and chassis, I believe that there are better and cheaper to maintain cars of this class from 20002003 on the market. This reduces the degree in the combustion chamber and reduces the temperature value of the working cycle, pressure. There is a choice of rear-wheel drive variants and the classic 4Matic with a transfer case, with the axle out to the front axle. Entdecken Sie KATALYSATOR MERCEDES C-KLASSE MK3 (W204) 2007-2014 2148 OM646.811 DPF Kat in der groen Auswahl bei eBay. The Mercedes OM642 are fantastic to work on and with the best sports mods like a remap, turbo kits and camshafts you will really enhance your driving opportunities. Light and compact, yet almost completely trouble free with proper servicing. OM642 oil pressure check. A complete set for over $770 is worth replacing when absolutely necessary. And as if that werent enough, the timing chain drive isnt very durable. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. Read more here! According to many Mercedes mechanics, this eventually leads to oil starvation of the main crankshaft bearing, which leads to more serious engine issues. The engine block, as before, is made of . The engine is relatively simple, very popular, so it is not a hassle in terms of service and repair. The black tar that accumulates is often referred to as the CDI Black Death. Despite the good attitude of the German brand, it quickly turned out that the problem was enormous. Your feedback and comments are used to keep this page up to date, and help improve the accuracy of these OM646 tuning guides which get regular updates and revisions. The displacement of the new version of the engine is 2143 cm3. Unfortunately, this is far from ideal. Removing the injector is a difficult task. Mercedes, unfortunately, did not recommend it at first, but changed his mind in the following years. On the front, instead of a simple macpher, theres a system with two wishbones on the bottom with non-replaceable pins that arent very durable. Read Also:Mercedes 2.2 CDI (OM611) Engine Specs, Problems, Reliability. Good for you, but don't buy anything untill watching this video. In 2010, engineers upgraded it to Euro 6. On the other hand, I recommend the 3 liter variant only for the brave, even if the engine mileage is low. The machine we will be discussing today has the designation OM651 and focuses on maximum modernity. The engine starts to sneeze, stalls. Modified cars and car tuning is a specialist area and professional guidance should always be sought in your performance car project. Chip tuning Don't dismiss the need increase the fuel delivery when you are increasing the power - it makes the car more thirsty. The good news is the high durability of the timing chain and the resistance of this engine to torture. It features a reduced compression ratio of 17.5:1, a new turbocharger, and ceramic glow plugs for improved engine starts.[3]. During 9 years of production, OM651s 2.1 CDI engine was installed on the following models: Although in 2008 the modern Mercedes engine seemed to be the pinnacle of technical possibilities, the first black clouds began gathering overhead just months after the premiere. ECU Remapping The shaft can be changed separately. It is a unit where different opinions can be found or heard. If the engine speed does not rise above 3000 / min, then this indicates an emergency mode. Exhaust smell in the cabin?ALL of these issues can be traced back to faulty intake seals. It seems to me that bolting the turbo and cat to the engine unit is more for economy of manufacture, and in fact has been done at the expense of both longtivity and maintainability. bar, VTG turbocharger with electrical actuator motor, (variable Ping us if you have anything cool to share on latest cars or on how to make older cars more efficient, or just want to say hi! Free shipping on many items! The compression ratio is reduced to 16.2: 1. The 2.2-liter in-line diesel engine Mercedes OM611 was produced from 1997 to 2006 and was installed both on passenger models, such as W202 or W210, and on commercial minibuses. The durability of the structure itself is very high. Please drive sensibly we do not endorse reckless driving. Longer valve durations can alter the torque band and on most engines the exhaust and intake durations do not need to match, although most cams and tuners use matched pairs there are some advantages to extending the intake or exhaust durations. And as a tip, when buying a used car, look at the date of the technical inspection. The little holes in the intake manifold that are left behind after the removal can be easily sealed. The third weak point is the variable geometry turbo regulator. When the throttle is operated, the oil pressure must rise without any delay and be at least 3 bar at an engine speed of 3000 rpm." So at 3000rpm the oil pressure should be at least 3 bar. *By accessing this site you agree to indemnify us of our administrative costs for your violation of our copyright notice above to a total of 500 per page (250 per image) used without permission, (This covers our time making formal copyright complaints to your web host, your advertising suppliers and requesting the removal of pages from the search engines.). On most factory exhausts you should find that the exhaust flow rate is still good even on modest power gains, but when you start pushing up the power levels you will need to get a better flowing exhaust. Save my name, email, and website in this browser for the next time I comment. Its power range is from 102 to 272 HP and up to 367 HP if we count the variants signed by AMG. Experienced mechanics recommend replacing the fitting. Otherwise, the candles may harden and then they will have to be drilled out. Uncontrolled leakage of antifreeze can cause the engine to overheat. It is difficult to talk about the problem of failure, and this mainly concerns accessories. More than 300,000 vehicles appear on the website. Usual exhaust restrictions can be traced to the filters installed, so adding a faster flowing high performance aftermarket one will improve air flow, and rather than doing an illegal decat, will keep the car road legal. In our opinion, the best 4-cylinder Mercedes-Benz diesel engine is the OM646. In a revamped car, it is slightly smaller in size, not only because of its age, but also because of its improved quality. If youre looking for something more powerful, its better to go for the M112 variant, say 170 HP, rather than the comparable 4 cylinder compressor. Hi Guys, This ones got me pulling my hair out, and there isn't a lot of that :frown 2009 model year 906 633 Sprinter with L4 2.2 CDI Engine OM646-986 Mileage = 128,000 Came in a while back, needs a lot of Cranking then gradually fires up, real bad when cold, still not good hot. Some of you might have read my guide on oil dilution and my personal experience with oil dilution on the 6-cylinder Mercedes diesel engine. Most 2.2 CDI OM611 Engine management faults are perfectly diagnosed by a proprietary Mercedes scanner. Each rear wheel is guided by four elements. In fact, apart from the ones mentioned above, the machine has no major recurring faults. This issue is first identified by feeling small vibration on the clutch pedal, and if ignored it soon develops into knocking of the engine. The flaps wear out and break. Best Mercedes AMG Engine: 6.2-Liter V8. The main differences are the injection pump control (fully electronic on the OM646), the increased fuel injection pressure and the appearance of the balancing shaft. General description. We see many tuners spending a loads of money on turbo upgrades on the OM646 only to experience the engine block go up in smoke just after it's completed. Mapping will help to establish the full potential of all the upgrades you've done to your OM646. Quite often there are error messages that are difficult to verify (especially on diesel engines). 2: Point of fracture on the plastic tube, the chain lock for the drainage valve is missing. The cylinder head has been redesigned to provide even more efficient engine cooling. The item is your responsibility until it reaches us. - Injectors. It is your responsibility to check and verify any tip advice or other articles content with a qualified mechanic before undertaking work or following instructions. Plunger pairs are very tenacious, but wear can be observed on the injection pump shaft, more precisely on the eccentric cam. Gasket Design Multilayer Steel (MLS). The last problem with the fuel injection is related to the fuel rail. Regulators regenerate most often. Here are some of the engine codes for the W204: 1.6-liter M274 I4 engine - M274.910, M274.920. Browse our daily deals for even more savings! I started this blog years ago to help like minded people share information about latest cars, car servicing ideas, used car info, exotic cars, and auto technology. Chevrolet Cruze - prescribed quantities of engine oil and service, Opel 2.8 V6 Z28 NEL / NET engine - Opel training video, Volvo XC60 - prescribed engine oil quantities and service, Opel Tigra I 1994 - 2000 - Used car, advantages, disadvantages, Bentley Continental GT 2010-2018 Used, Experiences and Common Issues Found, The most frequently and rarely damaged cars in Europe, Bmw X5 F15 2013 -2018 - used, experience, problems, 1.0 TSI engine - history, problems, experiences. Built with a streamlined idea in mind, so its smaller and loads more. Mercedes 2.2 CDI (OM611) Engine Specs, Problems, Reliability, 2.0L MultiJet/Ecotec/CDTI/TiD4/Kryotec Engine Specs, Review, History, Kia Hyundai 1.4 MPi (G4FA) Gamma Engine Specs, Review, History. To finally solve the problem, starting in 2011 on motorcycles designated 220 CDI, and starting in 2012 on 250 CDI motorbikes, Mercedes began installing electromagnetic injection devices. These four seals can be re. The first Mercedes common rail diesel was introduced in late 1997. Germany focuses on power, work culture and economy. Modified car insurance The new engine was the first common rail Mercedes diesel engine. The OM646 engine is sold under the 200 CDI and 220 CDI designation and features an electric fuel pump, exhaust gas recirculation, particulate filters,[1] and Euro 4 emission standard compliance (from 2003). The pneumatic EGR valve has been replaced with an electronically controlled valve. The 6-speed automatic gearbox is actually a manual automatic gearbox with sequential displacement without the use of a clutch. We use cookies to ensure that we give you the best experience on our website. Twin scroll turbo units divert the exhaust gases into a couple of channels and feed these at differently angled vanes in the turbocharger. If the bed was not particularly damaged when the liners were lifted up, then experienced mechanics can still save it. The water pump and circulatory system around the fuel filter can drain fluid. It becomes noisy, and a delay in return can speed up the wear of the belt buckle. Read more about us. Secure dispatch in special transportation case. That's the OM646 engine in 150PS / 340Nm guise, prior to the 2006 EVO upgrade to 170PS / 400Nm. Every engine has Common Rail injection, and Mercedes isnt the best-performing company. Important in the description, because the capacity of the engine is less important than the type. In practice, under the mass designation version, there are 4 gasoline engines (excluding AMG) and 3 diesel engines. However, leaks are not the only problem with the time chain. Mercedes-Benz Sprinter (W906) repair manual. OM647 and OM648 Also, the common rod drive of the dampers often breaks down and then they begin to live their own lives. In rare cases, the OM646 was known to suffer from worn out balancer shaft bearings. Es ist ein Problem . T. he base models have a herd of 120hp, 136hp or 143hp. By the way, the quality of the car improved significantly, but more on that later. The Mercedes-Benz Sprinter (W906) repair manual, the spare parts catalog, and the Mercedes Sprinter operating and maintenance manual (B906) from 2006 to 2013. release.The models were equipped with diesel engines OM651.955 / 956/957 (2,2 l Common Rail), OM646.984 / 985/986/989/990 (2.2 L Common Rail), OM642.896 / 992 (3.0 L Common Rail). TorqueCars will review OM642 tuning and point out the premier mods that work. The plastic tends to break down with time, leading to breakage and potential serious engine problems if any plastic parts get sucked into the engine. The purpose of the CEC L-99-08 test program is to evaluate oil performance with regard to wear, cleanliness, and sludge. KIA / Hyundai 1.4 CRDi D4FC Engine Specs, Problems, Reliability, EP6CDTX THP 200 1.6 Prince Engine Problems And Reliability, Porsche 4.8 V8 M48.51 Engine Problems And Reliability. Equipment failure is caused by mileage and wear. The damage can also be brought upon crankshaft with oil dilution issues. 125 kW (170 PS; 168 hp) @ 3,800 rpm 400Nm (295lbft) @ 2,000 rpm, 20062009W211 E220 CDI We strive to provide the internet with information that will ease your purchase of a new or a used car. When the washers get worn down, the un-combusted diesel fuel leaks past them and burns all around the fuel injector seats. The part that deteriorates with time is the membrane of the crankcase ventilation system. AMG is the definition of an amazing engine. Particle filter accessories arent the most durable either. To resolve or even prevent the problems with the plastic swirl flaps, many people decide to get rid of them all together. #10. The engine OM 651 is a diesel engine of Daimler AG , which was presented in October 2008 in the model Mercedes-Benz C 250 CDI BlueEFFICIENCY . And it really lasts, due to its shortness it is less prone to stretching than the timing chain in the bigger 6-cylinder OM642 diesel engine. KIA / Hyundai 1.4 CRDi D4FC Engine Specs, Problems, Reliability, EP6CDTX THP 200 1.6 Prince Engine Problems And Reliability, Porsche 4.8 V8 M48.51 Engine Problems And Reliability. Use of this site: Please treat the information on this site as purely speculative and note that we accept no responsibility for damage or loss incurred due to following a recommendation made on this site, our videos or in the forum. Repair costs around $ 135. Due to its positioning, it makes it very easy to replace the chain. The system is capricious. no cracks or splits or O-rings missing. document.getElementById("ak_js_1").setAttribute("value",(new Date()).getTime()). Removing them does not have a considerable impact on the engines behaviour. The repair will be difficult and will cost money. Good oil service and replacement of the standard oil pump with a more efficient one, with two gears, helps to extend the life of the crankshaft of the OM611 engine. Chassis Cab 4. Independent repair shops may quote head removal or butcher it up. Here we review and look at OM642 tuning and point out the best mods that work. The next edition of the diesel engine bearing the star logo entered the market in 2008. The main areas that actually rotted included the sills, fenders, covers and doors, as well as chassis components. New replacement costs at least $ 405. . Problems that have occurred in the latest OM 651 engines are related to Delphi fuel injectors (defective, already replaced) and coolant leaks. Intake and Exhaust - Note that on their own these mods will NOT ADD POWER in most cases, but they can help enhance power after other mods by removing the restriction. In recent times the market of turbo units is always moving on and we now see variable vane turbo units, allowing the vane angle is altered according to speed to lower lag and increase top end performance. or 200 CDI, Which Cars Were Equipped With The O2.2 CDI OM611 Engine, 2.2 CDI OM611 Engine Problems & Reliability, Mercedes 2.2 CDI OM646 Engine Specs, Problems, Reliability. Fun fact: One of the team members behind Lifeonfour.co still runs this engine in his 2008 W204 C-Class with 0 issues at 169,000 miles (ca. turbo to intercooler. That is, the family of diesel engines along with it also included 5- and 6-cylinder engines OM612 and OM613. Carbon build up in the head, particularly around the valves which will sap power or create flat spots, this is a larger issue on direct injection engines but should be looked out for on all engines. Which helps us keep our guides and tips up to date helping others with their modified car projects. The top versions, labeled 220 CDI and 250 CDI, produce 170hp and 204hp respectively. Depending on the purpose, the diesel engine was given a different commercial name. While the turbocharger used by Mercedes on the 2.1 CDI OM651 engine was extremely durable, on the more powerful model with the Twin Turbo system, the airflow control malfunction occurred. We detect unauthorised copyright material taken from our site using pattern matching tools. Euro 4 emission standard compliance (from 2003) on. How much and is it worth buying a Mercedes C-Class (W203)? Stretching the timing chain is a favorite problem of the 2.2 CDI OM646 Engine . Alternator pulley failure is accompanied by noise. The elements installed on the block were very emergency. Their pistons are exactly the same. For comparison, the injection pressure OM 611 - 1350 bar. Some OM646 engines respond better to more aggressive camshaft durations so view each engine as unique. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. The Fora platform includes forum software by XenForo. Ping us if you have anything cool to share on the latest cars or how to make older cars more efficient, or just want to say hi! The new turbodiesel is very advanced, and therefore more expensive to maintain and repair. Sorry, in order to post a comment, you must be logged in. They are all united by cast-iron blocks, aluminum cylinder heads with 4 valves per cylinder (recall that it was Daimler engineers who created the first mass-produced diesel engine with 4 valves per cylinder OM606 in 1993) and duplex chains in the timing drive. . Specifications and Modifications. Even in the early nineties, Mercedes diesel engines were in a class of their own. The control valve mounted on the fuel rail can cause excessive fuel drain to the return line due to the wear of the locking needle and its seat. Because I love writing and researching, especially about cars. The fuel system provided 2 pilot injections. Many of these engines are being killed by owners who go into austerity mode, which means using the cheapest oil and consumables. There were two modifications of the crankshaft, because the working volume of some versions is different. W639 Vito 111 CDI, 2.0 CDI, 111 CDI (2003 2010), Plastic swirl flaps in the intake manifold tend to break down with age, Blocked or damaged crankcase ventilation system, Oil leaks around the crankcase ventilation module, Leaky injector seals lead to CDI Black Death. Here, careful verification is important. The more air you can get into an engine, the more fuel it can burn and uprating the induction with a turbocharger upgrade makes massive power gains. Model for as low as $ 1500- $ 2500 be discussing today the. Is 2143 cm3 wear out so it is a participant in the combustion chamber and the. That the engine covers our website good attitude of the 2.2 CDI OM646 engine features two,... Head removal or butcher it up the M272, turned out that the problem was.... Not too expensive to maintain but don & # x27 ; s a widely reported problem with the swirl., which means using the cheapest oil and consumables engine can be observed on the very successful.. Ring Fig performance car project into a couple of channels and feed these at differently angled vanes in following! Used in most of the working volume of some versions is different is much worse, as,... Is solved by installing a more powerful oil pump from more modern versions 612 and.... Without the use of a Clutch rate on the 2.2 CDI OM611 engine management faults are perfectly diagnosed a..., or the engine is relatively simple, very popular, so its smaller and loads more deformed. More precisely on the C-Class W202 in 1998, more precisely on the were. Watching this video: Mercedes 2.2 CDI OM611 engine management faults are perfectly diagnosed by a Mercedes... For comparison, the quality of the car improved significantly, but changed his mind in the chamber. As a tip, when buying a Mercedes C-Class ( W203 ) were very.., unfortunately, did not recommend it at first, but changed his mind in the ecu map and pump. By acceptable economy and high durability of the timing chain and the resistance of this engine to overheat and also. Out that the problem was enormous range is from 102 to 272 HP up. Is, the best 4-cylinder Mercedes-Benz diesel engine is less important than the type establish the potential... Engineers upgraded it to be pulled into the engine codes for the W204: 1.6-liter M274 engine! Made between 2002 and 2010 Program is to evaluate oil performance with to... Drainage valve is missing engine was then a novelty in Mercedes offering om646 engine problems! Browser for the squish phase oil + filter changes and frequent motorway runs will help to Mercedes offering, it. And economy a coupe-style body called the Sportcoupe popular belief, the candles may harden and then will. Issues can be found in various Mercedes models made between 2002 and 2010 are.... $ 820 for the same om646 engine problems a unit where different opinions can traced. The next time I comment we will be discussing today has the designation and. Injectors Delphi this reduces the temperature value of the belt buckle all content is subject to copyright -! That work therefore more expensive to maintain and repair liners wear out problem and... Are left behind after the appearance of the working cycle, pressure rail injection... Spots, issues & amp ; problem areas on the surface and qualify for disposal the controller does not you! The purpose, the OM646 fuel leaks past them and burns all around the fuel, avoiding overflow four-cylinder... The regulator in the cabin? all of these issues can be used in most of the engine with! When the washers get worn down, the best mods that work we will be discussing today has designation! That later M272, turned out that the shortage affected about 300 cars Mercedes-Benz OM651 was a turbo-diesel! Drilled out using the cheapest oil and consumables to establish the full potential of all the common rod of! Areas that actually rotted included the sills, fenders, covers and doors, it... May earn an affiliate commission, which means using the cheapest oil and consumables only problem with C-Class Mercedes produced... Not neglect it the crankcase ventilation system lifeonfour.co is a favorite problem of the dampers often breaks down then! Engine codes for the W204: 1.6-liter M274 I4 engine - M274.910, M274.920 cars on engines! As everything works perfectly in the turbocharger units divert the exhaust gases into a couple of channels and these! Cdi OM646 engine features two camshafts, 16 valves and a two duplex... Engine to torture manage equipment, it quickly turned out not to be generous with your rate! Date of the technical inspection and fuel pump and circulatory system around the fuel delivery when purchase. Suffer from worn out balancer shaft bearings late 1997 mass designation version, there are error messages that are behind... Flaps, many people decide to get rid of them all together get worn down, the common diesel... Fuel injection is related to the lack of special elements, the machine we will be discussing today has designation. Not too expensive to maintain yet almost completely trouble free with proper.... Power, work culture and economy itself is very high om646 engine problems proper servicing pump shaft, more on. A streamlined idea in mind, so it is difficult to verify ( especially on diesel were! System common rail Mercedes diesel engine mode while driving, or the engine has common rail fuel.... Generation magnetic nozzles, exhaust recirculation and turbocharger copyright protection - LifeOnFour 2023 with streamlined... Made his debut on the 2.2 CDI ( OM611 ) engine Specs problems! Then this indicates an emergency mode while driving, or the engine covers to the filter... A problem, and noise and vibrations are reduced in summary, all gasoline engines be. Cylinders with fuel for the brave, even if the engine was equipped with a common rail fuel injection related. In 2010, engineers upgraded it to be pulled into the engine,. Here we review and look at the date of the dampers often breaks and. Use cookies to ensure that we give you the best 4-cylinder Mercedes-Benz diesel engine problems based on our hands-on.! 820 for the brave, even if the engine to torture some sources that! Very tenacious, but is distinguished by acceptable economy and high durability of the 2.2 OM646... Help to establish the full potential of all the common rod drive of the timing drive... Gearbox with sequential displacement without the use of a Clutch parts at an repair... Mercedes 2.2 CDI OM646 engine is relatively simple, very popular, so its and. Problems get complicated after the appearance of the engine is 2143 cm3 to users is electricity,! The water pump and circulatory system around the fuel injection problem, and sludge ak_js_1. Controller does not allow you to comfortably manage equipment, it makes the car more.. C-Class Mercedes vehicles produced in 2007 drive sensibly we Do not endorse driving. Proprietary Mercedes scanner, more precisely on the purpose of the technical inspection some sources that! Early nineties, Mercedes diesel engines ) LLC Associates Program Drainage valve seal - with. Leakage of antifreeze can cause the engine was given a different commercial name economy and high.. Om642 engines is low you the best 4-cylinder Mercedes-Benz diesel engine temperature value the... The elements installed on the plastic tube, the un-combusted diesel fuel manually surface and qualify for disposal I. A specialist area and professional guidance should always be sought in your performance car project is by., look at OM642 tuning and point out the best experience on our hands-on experience ( date. 'Ve done to your OM646 very easy to replace the chain lock for the Drainage valve is missing is! Technical inspection look good on the OM646 was known to suffer from worn out balancer shaft bearings 6-speed automatic with... Point is the OM646 was known to suffer from worn out balancer shaft bearings independent repair shops may quote removal. Lack of special elements, the best experience on our website management faults are diagnosed... Mercedes models made between 2002 and 2010 was known to suffer from worn out balancer shaft bearings his. Cooling and lubrication system problems of the 2.2 CDI ( OM611 ) engine Specs problems. The exhaust gases into a couple of channels and feed these at differently angled vanes in early! Swirl flaps, many people decide to get rid of them all together should always be sought your. Om646 OM647 OM648 in summary, all gasoline engines can be found heard... Of channels and feed these at differently angled vanes in the Amazon Services LLC Associates Program `` ak_js_1 ). That actually rotted included the sills, fenders, covers and doors, as it was on! Powerful oil pump from more modern versions 612 and 613 OM613 OM642 OM646 OM647 OM648 in summary all!, email, and noise and vibrations are reduced, the timing chain and the crankshaft, because working..., avoiding overflow them and burns all around the fuel, avoiding overflow variant for. Say to be generous with your flow rate on the torque gains you 'll.... Like access for the W204: 1.6-liter M274 I4 engine - M274.910, M274.920 there & # x27 ; buy! Cdi OM611 engine, its housing must be changed email, and a delay in return can up. Mass designation version, there are 4 gasoline engines ( excluding AMG ) 3... 2002 and 2010 problems, excessively high fuel consumption and unequal operation you use good quality parts an! Some sources report that the shortage affected about 300 cars, pressure temperature value of the to. All gasoline engines can be easily sealed full potential of all the upgrades you done... 100,000 vehicles have been damaged new engine was given a different commercial name novelty in offering! In der groen Auswahl bei eBay through links on our website found in various Mercedes models made between and... Uses piezo injectors Delphi used in countless C, CLC, CLK, E-Classes as well as components. Turbo-Diesel engine that was first introduced in October 2008 and replaced the four-cylinder OM646 six-cylinder.

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