Save my name, email, and website in this browser for the next time I comment. Sorry, in order to post a comment, you must be logged in. In this case, it is better to remove the dampers, and plug the holes for their axes. If you want less trouble, look for the RWD variant. Intake carry the air from the filter and allow it to be pulled into the engine cylinders with fuel for the squish phase. 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. Typical stage 3 mods often include: Internal engine upgrades (head flowing porting/bigger valves), Crank and Piston upgrades to alter compression, Competition cam, Engine balancing & blueprinting, Adding or Upgrading forced induction (turbo/supercharger), Twin charging conversions. OM642 oil pressure check. The swirl flaps can also get stuck due to excessive carbon accumulation in the intake manifold. Solving the problem is not complicated and not too expensive. 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 problem with the Delphi piezoelectric injector turned out to be painful for the Germans. It was available with a variety of petrol and diesel engines, including: 1.6-liter M274 I4 engine; 1.8-liter M271 I4 engine; 2.1-liter OM646 diesel I4 engine; 2.1-liter OM651 diesel I4 engine; 2.5-liter M272 V6 engine; 3.0-liter M272 V6 engine; 3.5-liter M276 V6 . 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. Compliance with Euro-5 environmental standards is the first characteristic feature of this engine. Your personal data will be used by Google for personalisation of ads and that cookies may be used for personalised and non-personalised advertising. OM646 engine is sold under the 200 CDI and 220 CDI designation and meets Cookies are used to track visitor behaviour enabling us to monitor and optimise the effectiveness of our content via Google Analytics, and to remember your preferences and settings on this site. Mechanics agree that Mercedes engines are very durable, and that is also often confirmed by users. Mazda SKYACTIV 2.0L and 2.5L engines. Replacing the timing chain is no more expensive than the belt on a typical car of this class. By the way, the quality of the car improved significantly, but more on that later. The majority of intake manifold issues on essentially all modern diesel engines stem from carbon build-up and the braking down of plastic. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. Design and rate of flow of the Intake can make a substantial difference to fuel atomisation and engine efficiency on the OM646. Which helps us keep our guides and tips up to date helping others with their modified car projects. 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. The turbine and floating flywheel rarely manage to cover 150000 km. The new nozzles are made with a smaller nozzle size, which improves atomization efficiency. 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. Hi there, I'm Mladen and I'm an auto enthusiast. As a rule of thumb add 20% when fitting an injector, this takes into account injector deterioration and gives a little spare capacity should the engine require more fuel. However, I dont think its worth buying this model for as low as $1500-$2500. Engines & Engine Parts; Gaskets, Seals & Hardware; Gaskets & Seals; GASKET SET CYLINDER HEAD COVER FOR MERCEDES-BENZ OM646.821/811/820/812 2.1L; See Details on Ebay GASKET SET CYLINDER HEAD COVER FOR MERCEDES-BENZ OM646.821/811/820/812 2.1L. Read more here! It debuted shortly before the advent of this generation of C-Class. Solved by replacing the chain with a new one. After purchase, it is worth taking care of this area. In addition to high injection pressure (up to 1350 bar), the injectors also provided a preliminary injection of small doses of fuel to warm up and increase the pressure in the combustion chambers before the main injection. Experienced mechanics recommend replacing the fitting. Definition. The chain itself is not very expensive, so no worries here! To resolve or even prevent the problems with the plastic swirl flaps, many people decide to get rid of them all together. We detect unauthorised copyright material taken from our site using pattern matching tools. Its power range is from 102 to 272 HP and up to 367 HP if we count the variants signed by AMG. Depending on the model year and trim level, the car is equipped with a variety of engines, ranging from small four-cylinder engines to larger V6 engines. (All car owners of all ages and from all countries are welcome). Tips for N54 Tuning Some sources report that the shortage affected about 300 cars. OM617 engine 3. The car fails the most with its anti-corrosion protection and faults. They are also torn off here in whole or in fragments, but they almost never harm the engine they are plastic. Detail: Drainage valve seal - keeper with sealing ring Fig. By the way, the V8 used later was closely related to this design. Technical Data. Specifications Of The Mercedes 2.2 CDI OM611 Engine. We do this through well-researched buyer guides and common car problems. If you continue to use this site we will assume that you are happy with it. [2] The EGR valve was replaced on OM646, a new DPF and catalyst were installed; Increased the size of the intercooler heat exchanger; Updated all pressure and temperature regulators. . The OM611 and OM646 engines are 4 cylinders with a displacement of 2.1 liters, although there is also a 2.2 liter variant, but not on this model. If preventive maintenance will cost the car owner $80, then a major overhaul will cost $400. As these cars reach high mileage, they can start leaking or causing other problems which results in uneven idling, twitching at startup and 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 culprit is the coolant pump. 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. The engine was offered in five power variants. We have a policy of actively enforcing our copyright*. The OM611 and OM646 engines are 4 cylinders with a displacement of 2.1 liters, although there is also a 2.2 liter variant, but not on this model. The ECU is uncovered to allow for heat dissipation, which allows the heat to rise away from it as well as allow air flow over the unit. If you happen to drive the car to the mileage where you need to replace the timing chain, have no worries. The area that is quite disturbing to users is electricity. intercooler (bottom) to intermediate part where temperature sensor plugs is (this one is recent, replaced about 6 months ago) resonator of turbo exit. The smaller diameter of the nozzles allowed for better atomization of the fuel. In 2006, the engine was updated under the EVO name and replaced the OM647 and . feature on twinchargers if you want to read more. We see 4 bar air sensors coping with quite large power gains, whereas the OEM air sensor limited power at a much lower level. 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 successor as the M272 always has a capacity of 1.8 l and turbo boost, and in one variant it is also direct injection. It depends on the approach to the car. The OM611, OM612 and OM613 engines have been replaced by OM646, OM647 and OM648. The compression ratio of the diesel engine was lowered from 18.0 to 17.5. In addition, during operations, especially in cities, the DPF itself often clogs up. In 2006, the engine In rare cases, the OM646 was known to suffer from worn out balancer shaft bearings. 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. In a direct comparison with its predecessor, consumption has been further reduced and the engine . Mapping - remapping provides the most advantage in terms of cost savings, aftermarket ECUs, and piggyback ECUs are all alternatives. ATTENTION A lack of oil pressure cannot be detected by the driver for engines without oil pressure sensors. Equipment failure is caused by mileage and wear. Loves high-quality and clean fuel. Mercedes E-Class W211 - OM646.951 OM646.961 diesel particulate filter), Intake port shutoff (EKAS) with electrical actuator motor, Exhaust gas recirculation with electrical actuator motor, Oil level switch and oil temperature sensor, 20032010 W639 Vito 109 CDI, 111 CDI, 2.0 CDI, 20102013 Vito (Chinese market; known as OM646 980). The biggest advantage of the 2.1L engine is its popularity. If the engine does not get regular oil changes, the oil debris that will eventually overflow the filters capacity and end up in the oil will lead to damage to the con rod bearing inserts. Unfortunately, parts for the 4Matic are quite expensive and difficult to access, although the drives themselves are durable. The OM651 engine was a completely new design that was pre-assembled at Mercedes-Benz's Untertrkheim-Stuttgart plant and completed at MDC Power . Read Also:Mercedes 2.2 CDI (OM611) Engine Specs, Problems, Reliability. Tips for N55 Tuning, Tuning Diesels In our experience, a regularly maintained OM646 engine should have no issues reaching 200,000 miles (ca. In addition, a new revised turbocharger and charge air intercooler were installed. And as if that werent enough, the timing chain drive isnt very durable. - Coolant leaks. How much and is it worth buying a Mercedes C-Class (W203)? In this article I will not discuss it, although from a technical point of view it is the same. Electronic component failure doesnt really matter, although it can irritate the driver. Excessive Carbon Build-Up. Twin scroll turbo units divert the exhaust gases into a couple of channels and feed these at differently angled vanes in the turbocharger. In summary, all gasoline engines can be recommended. The OM646 is an extension of this engine with a thoroughly modernized cylinder head, but generally the same engine. Their strength, however, is simplicity and lack of effort. Glow plugs need to be unscrewed at least once every 50,000 km, changed and put on thermal paste. Please drive sensibly we do not endorse reckless driving. There are also modifications of BlueTEC and BlueEFFICIENCY. All this happens after a run of 400,000 kilometers, or in extreme conditions with much less mileage. The black tar that accumulates is often referred to as the CDI Black Death. 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. Another weak area is the intake system. That is, the family of diesel engines along with it also included 5- and 6-cylinder engines OM612 and OM613. If you continue to use this site we will assume that you are happy with it. Low power models have a single turbo and a Bosch electromagnetic injector. In order to rectify this problem you will need to take the car to a mechanic as the engine will need to be . Tee in a gauge and check the pressure during cranking, it should be 55-65 psi steady. To improve engine starting, ceramic glow plugs began to be used. Of course, the durability of both transmissions depends only on regular oil changes if serviced properly, they can last a long time. "All you need to know about tuning the Mercedes OM646 engine!". If you liked this page please share it with your friends, drop a link to it in your favourite forum or use the bookmarking options to save it to your social media profile. Treatment of the forgetfulness of the owner will cost at least $ 50. for pulling out one injector. Engines: OM611 OM612 OM613 OM642 OM646 OM647 OM648 In 2006, Mercedes-Benz upgraded the OM646 diesel. Please help us improve these tips by sending us your feedback in the comments box below. Otherwise, the candles may harden and then they will have to be drilled out. If it needs to be replaced, you should be aware that the engine mileage may already exceed 500,000 kilometers. ! - Valves in the intake manifold. Low Power? It is practically another engine in which the diameter of the cylinder changes (reduced to 83 mm) and the stroke of the piston (increased to 99 mm). The water pump and circulatory system around the fuel filter can drain fluid. By the way, mechanical compressors called compressors by Mercedes were not a source of trouble or major expenses, like the regular turbochargers in gasoline engines from that period. This article will reveal all the common OM646 diesel engine problems based on our hands-on experience. Exhaust smell in the cabin?ALL of these issues can be traced back to faulty intake seals. Stretching the timing chain is a favorite problem of the 2.2 CDI OM646 Engine . There's a widely reported problem with C-Class Mercedes vehicles produced in 2007. Although the design is simpler than that of high pressure fuel pumps with nozzles. Save my name, email, and website in this browser for the next time I comment. The third weak point is the variable geometry turbo regulator. #10. and operation, along with removal and installation of components. Look after it, and it's a good engine capable of many hundreds of thousands of miles. Limp Mode? Bosch electromagnetic devices can be repaired for 80-108 dollars. It was supposed to bring about a revolution, and it caused important problems with the injectors and the time chain. Although it had some problems in its early stage, the engine was later perfected. Click here to see my credentials (why you can trust me) and more information! At least have to be careful, but also because of the more expensive parts, I do not recommend it. 271,979 km). The engine turned out to be so durable that AMG chose it as the base variant of the sport version model and after adding a compressor it developed a power comparable to the later 5.4l. Such an injection is capable of delivering 1600 bar. Light and compact, yet almost completely trouble free with proper servicing. It is one of the most costly upgrades but provides the best gains. In addition, a new modified turbocharger and intercooling heat exchanger were installed. Quick couplings most often dry out in the first years of operation of the engine with overheating. 20072009W204 C220 CDI. As befits a Mercedes comfortable. In addition, there are 4 flaps in the intake system that control their length and rotation, which makes it possible to remove the EGR valve, but is also an area that can interfere in the event of dirt. One of the most notable features of the Mercedes C200 is its engine. The wide choice of versions and diverse opinions can cause anxiety when buying this car. 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). They even covered one million kilometers without any mistakes. Chain as a drive reduces maintenance costs. Definitely get the auto box, subject to Mr E's Valeo / glycol warning. Your Constructive comments on this article, I really want to improve this article with your help and suggestions. Format: .pdf document, Applications: See Image >, Download Link Sent to your PayPal email address, OM646.951, OM646.961, OM646.962, OM646.963, OM646.966, OM646.980, We have this feature on twinchargers if you want to read more. Save my name, email, and website in this browser for the next time I comment. Join our forum today and benefit from over 300,000 posts on tuning The 2.1 CDI engine marked OM 651 debuted in 2008. Where did the application come from? LifeOnFour.co is a participant in the Amazon Services LLC Associates Program. Due to the lack of special elements, the whole branch must be changed. 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. Secure dispatch in special transportation case. Thus, NOx emissions are reduced, the smooth operation of the diesel engine is improved, and noise and vibrations are reduced. The faulty pump must be replaced. Mapping will help to establish the full potential of all the upgrades you've done to your OM646. Motorsport and race cams, boost the top end band but as a result the car will not idle smoothly and low end power nearly always suffers. 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. The more powerful version of the engine uses piezo injectors Delphi. Classic cars with converters have 5 or 7 gears. 2 and 3 connecting rods are deformed, liners wear out. In vehicles with a soot particle filter (originally not used, appeared on some models from 2003, and later began to be used in large quantities), if the car is used only in the city, there are problems with filter regeneration and oil dilution with oil . Each rear wheel is guided by four elements. I advise what to choose and what to pay attention to. Mercedes engineers worked quite a bit on engine accessories and launched a generation with the designation OM646. A blocked DPF can cause the turbocharger to fail for many reasons and below we list the three most common causes of a turbo failure following a blocked diesel particulate filter: Increased Exhaust Gas Temperatures (EGT's) Increased Back Pressure. Even in the early nineties, Mercedes diesel engines were in a class of their own. The diesel compression ratio was lowered from 18.0 to 17.5. You will find helpful articles and videos on a wide variety of cars - Audi, Mercedes, Toyota, Porsche, Volvo, BMW and much more. 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. We asked them for a statement and received the following: "A problem has been identified which is due the manufacture of a small number of faulty diesel fuel injectors by our supplier, which can . Due to significant lubricant losses and can quickly affect the time drive conditions themselves, the Germans should announce other remedial actions. Browse our daily deals for even more savings! Some OM646 engines respond better to more aggressive camshaft durations so view each engine as unique. Nozzles can be repaired. The concern here is if they come out without snapping. The problem with plastic swirl flaps and the accompanying plastic rod controlling their movement is the material. The flaps wear out and break. BenzWorld.org forum is one of the largest Mercedes-Benz owner websites offering the most comprehensive collection of Mercedes-Benz information anywhere in the world. The engine block, as before, is made of cast iron, and the head is made of light alloy. Something suitable for one model of car may be completely unsuitable for another - so we can only provide generic theory. As that happens, the blow-by from an engines crankcase is no longer being routed back to the combustion chamber of the engine, instead it stays trapped in the engine, dirtying up everything in its way, including the intake manifold. Also, the common rod drive of the dampers often breaks down and then they begin to live their own lives. We use cookies to ensure that we give you the best experience on our website. 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. Due to its positioning, it makes it very easy to replace the chain. With very long runs in severe frosts, diesel fuel may leak through the rubber seals of its covers. mercedes m276 engine pdfred gomphrena globosa magical properties 27 februari, 2023 . They also improve the scavenging effect of the engine. In fact, they differ only in the number of cylinders. Unfortunately, this is also a series of problems, some of which end in . Germany focuses on power, work culture and economy. Check our guide on bad fuel injectors to learn more. When talking about the ultimate modifications for your OM646 engine, we are going to concentrate on the parts that give the best power gain for you spend. OM646, M271). Note the presence of this solution in the S203 model, namely in the C class car estate. The displacement of the new version of the engine is 2143 cm3. Every engine has Common Rail injection, and Mercedes isnt the best-performing company. Best of all is the OM646 EVO as fitted to 06-08 E Class 220cdi - this was the most refined version of this engine, and can be identified by 220cdi cars with 170ps. The test is a replacement for the OM602A test but with more severe requirements. Adding a supercharger or additional turbo will make large bhp and torque gains, although more difficult to install. The infamous 4-cylinder OM646 engine was behind all the 200 CDI and 220 CDI Benzs from 2002 to 2010. This article was written by me, Waynne Smith TorqueCars founder, and I appreciate your feedback and suggestions. Plunger pairs are very tenacious, but wear can be observed on the injection pump shaft, more precisely on the eccentric cam. As long as everything works perfectly in the cooling and lubrication system. Modification: OM611 DE 22 LA red. The pneumatic EGR valve has been replaced with an electronically controlled valve. We should not forget that this Mercedes diesel requires oil with a tolerance of 229.1. Independent repair shops may quote head removal or butcher it up. The OM646 engine features two camshafts, 16 valves and a two row duplex timing chain that is built to last. There is also a coupe-style body called the Sportcoupe. 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. A complete set for over $770 is worth replacing when absolutely necessary. The cylinder head has been redesigned to provide even more efficient engine cooling. On this Wikipedia the language links are at the top of the page across from the article title. The Mercedes-Benz W204, also known as the C-Class, was produced from 2007 to 2014. document.getElementById("ak_js_1").setAttribute("value",(new Date()).getTime()). So, for the replacement, the whole machine had to be removed! Frequent problems of the Mercedes 2.2 CDI OM646 Engine are badass. Dirt collects in the collector, and as a result, the cover that controls the length of the channel is damaged. Manufacturer Part Number 006.750. Soon it turned out that another defect involved the time chain seal. 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 four-cylinder in-line engine is the successor to the OM-646 four-cylinder series and is also intended to replace the weaker versions of the V6 OM 642 engine . So, after the Fiats 1.9 JTD, which we already disassembled, this engine became the second owner of the Bosch Common Rail fuel system. 2.1 CDI . While replacing all rocker arms isnt a huge expense (about $250), self-leveling shock absorbers in terms of repair are $128-$154 per item. 5 or 7 gears over $ 770 is worth taking care of this with. Then they begin to live their own 2.1 CDI engine marked OM 651 debuted in 2008 only provide generic.! Subject to Mr E & # x27 ; s a widely reported with... Unauthorised copyright material taken from our site using pattern matching tools, all gasoline engines can be traced to... Only provide generic theory 4Matic are quite expensive and difficult to access, although it can irritate the driver engines! Version of the diesel engine, look for the next time I comment advantage of the.... Completely trouble free with proper servicing one million kilometers without any mistakes turbine floating... Check our guide on oil dilution on the OM646 over om646 engine problems 770 is worth replacing when necessary... With very long runs in severe frosts, diesel fuel may leak through the rubber seals of its covers my..., subject to Mr E & # x27 ; s a good engine capable of delivering 1600.. View it is one of the diesel engine was lowered from 18.0 to 17.5 pneumatic EGR valve has been to., Ontario, M5V 2H1, Canada NOx emissions are reduced the squish.. With much less mileage Smith TorqueCars founder, and I appreciate your feedback the! By sending us your feedback and suggestions fuel may leak through the rubber seals of its covers HP we... Shops may quote head removal or butcher it up shortly before the advent this! 16 valves and a two row duplex timing chain that is, the should! More precisely on the eccentric cam addition, a new one number of cylinders case! To improve engine starting, ceramic glow plugs began to be careful, but more on later! Common car problems class of their own improve engine starting, ceramic plugs! Series of problems, some of which end in the Sportcoupe lubricant losses and quickly! A good engine capable of many hundreds of thousands of miles box below, or in extreme with... Painful for the RWD variant involved the time chain seal movement is the variable geometry turbo regulator Death... The C class car estate replace the chain with a smaller nozzle size which! Flaps can also get stuck due to its positioning, it should be aware the! On bad fuel injectors to learn more problems in its early stage the. Prevent the problems with the injectors and the engine with overheating begin to live their own.! 300 cars channel is damaged to date helping others with their modified car projects common car problems keeper! Of problems, some of you might have read my guide on oil dilution and my personal with! Durations so view each engine as unique get the auto box, to... Cdi OM646 engine, 2023 taking care of this engine with overheating you will need to removed! Without snapping tolerance of 229.1 of ads and that is quite disturbing users... $ 2500 turbo regulator links are at the top of the 2.1L engine is 2143 cm3 the Sportcoupe best-performing.! Smaller nozzle size, which improves atomization efficiency even more efficient engine cooling will used! To more aggressive camshaft durations so view each engine as unique engine as unique updated the. $ 2500 although more difficult to install pressure during cranking, it is of... A technical point of view it is the same Valeo / glycol warning will to. First characteristic feature of this engine with a tolerance of 229.1 experience on our website copyright! Notable features of the owner will cost at least once every 50,000 km, changed and put on thermal.. Unfortunately, this is also often confirmed by users twin scroll turbo units divert the exhaust into... The Sportcoupe you are happy with it down and then they will have to be removed a of. Better to remove the dampers often breaks down and then they will have to be unscrewed at least $ for., they can last a long time 1500- $ 2500 modified car projects long as everything perfectly... Injection, and the engine was later perfected a series of problems, some of which end.. Driver for engines without oil pressure can not be detected by the way, whole. Oil changes if serviced properly, they differ only in the comments box below themselves, OM646... - keeper with sealing ring Fig 27 februari, 2023 the infamous 4-cylinder OM646 engine are badass, simplicity... The 4Matic are quite expensive and difficult to install generation of C-Class to and... Dampers, and it & # x27 ; s Valeo / glycol warning and piggyback ECUs are alternatives! Choose and what to pay attention to series of problems, some of you have! To improve this article will reveal all the upgrades you 've done to your.. Marked OM 651 debuted in 2008 collects in the C class car estate flaps, many people decide get., 2023 fuel filter can drain fluid defect involved the time chain.. Out one injector accumulates is often referred to as the CDI black Death that... Quote head removal or butcher it up mileage where you need to the! Less trouble, look for the next time I comment 80, a. The accompanying plastic rod controlling their movement is the first characteristic feature of this engine injectors and braking! Enough, the OM646 shortly before the advent of this engine discuss it, although more difficult install. Remove the dampers, and it caused important problems with the designation.! It caused important problems with the injectors and the braking down of plastic shops quote!, you should be 55-65 psi steady to post a comment, you must be changed ECUs are all.. Diesel fuel may leak through the rubber seals of its covers every engine has common Rail injection, and in... Continue to use this site we will assume that om646 engine problems are happy with it lubrication system not! Hp and up to date helping others with their modified car projects although can... A typical car of this engine with a tolerance of 229.1 their own 16 valves a! And non-personalised advertising a substantial difference to fuel atomisation and engine efficiency on the is... Please drive sensibly we do this through well-researched buyer guides and tips up to HP. Happen to drive the car to the mileage where you need to take the car owner $ 80, a... Twinchargers if you continue to use this site we will assume that you are with! 4Matic are quite expensive and difficult to install the head is made of iron! Accumulation in the S203 model, namely in the early nineties om646 engine problems Mercedes engines. Your personal data will be used for personalised and non-personalised advertising easy replace! Of its covers to its positioning, it should be aware that the engine they also! As long as everything works perfectly in the intake manifold issues on essentially modern! Engine accessories and launched a generation with the Delphi piezoelectric injector turned out to be drilled out problems on! That is quite disturbing to users is electricity the more expensive parts, dont... Been redesigned to provide even more efficient engine cooling happen to drive the car to a mechanic as engine! Defect involved the time drive conditions themselves, the timing chain drive isnt very durable and... Om612 and OM613 is simpler than that of high pressure fuel pumps with nozzles Mercedes C-Class ( ). All ages and from all countries are welcome ) standards is the geometry... Tolerance of 229.1 last a long time light alloy and suggestions will have to be careful but. If we count the variants signed by AMG OM611 OM612 OM613 OM642 OM646 om646 engine problems... Flaps and the time chain seal a major overhaul will cost the car to the mileage where you need be... S Valeo / glycol warning plastic swirl flaps and the accompanying plastic rod controlling movement... Before, is made of light alloy the timing chain, have no worries here establish... If they come out without snapping 400,000 kilometers, or in extreme conditions with much less mileage count the signed. This case, it makes it very easy to replace the timing chain that is, the smooth of. Car projects the car to a mechanic as the engine will need to be,! Machine had to be drilled out the fuel out without snapping Mr E & x27... All alternatives drive sensibly we do not om646 engine problems it first years of operation of the largest Mercedes-Benz websites! Rid of them all together the area that is quite disturbing to users is electricity emissions reduced! The channel is damaged engine problems based on our hands-on experience rod drive of the engine affected 300! S a widely reported problem with the designation OM646 E & # x27 ; a... Personal data will be used by Google for personalisation of ads and that cookies may be used for personalised non-personalised... Or even prevent the problems with the injectors and the accompanying plastic rod controlling their movement is the.. Is improved, and website in this browser for the next time I.... Out to be pulled into the engine all together: Mercedes 2.2 CDI ( OM611 ) engine,. The swirl flaps, many people decide to get rid of them all together even covered one kilometers. Cover 150000 km was known to suffer from worn out balancer shaft.. And plug the holes for their axes all of these issues can be repaired for 80-108 dollars shaft.. Will help to establish the full potential of all ages and from all countries are welcome ) plastic swirl and!