. Another problem and on a large scale is corrosion. Modification: OM611 DE 22 LA red. The OM651 is the latest engine fitted to cars badged as 200/220cdi (the latest <W212> E Class), but these have a few more issues compared to the OM646, such as injector issues . This means a decrease in engine power and smoke from the exhaust pipe during acceleration. 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. Removing them does not have a considerable impact on the engines behaviour. Extensive global service network of Mercedes-Benz workshops. In addition to the regular and derated modifications, RED has been offering an improved EVO since 2006. Plenty of these engines made it to 200,000 miles (ca. Ignoring the issues with the OM651 CDIs more powerful 2.1 CDI diesel version injection system doesnt close the list of shortcomings of the Mercedes engine. The shaft can be changed separately. The 2.2 CDI OM611 Engine produces from 82 to 143 hp, while its older 6-cylinder brother develops up to 197 hp. The updated OM646 EVO has 90 parts replaced. The summary of the corrective action is terrifying. Download: 36.7 mb, 168 pages The engine block, as before, is made of . Please help us improve these tips by sending us your feedback in the comments box below. If you miss this moment, you can get wear on the belt tensioner. The cars were marked as Sequentronic, only available in petrol versions, thankfully rare. 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). 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. We use cookies to ensure that we give you the best experience on our website. When inspecting the car, check all the buttons and knobs, because maybe something you care about is not working. The displacement of the new version of the engine is 2143 cm3. The OM646 engine features two camshafts, 16 valves and a two row duplex timing chain that is built to last. Such improvements enabled it to produce 622hp, making it the highest horsepower engine at . Specifications and Modifications. The engine was equipped with a Common Rail 2 fuel system. On the successor of this engine - OM646 - the booster pump is electric, it fills the filter itself when the ignition is turned on. feature on twinchargers if you want to read more. The solution is to replace the crankshaft, liners. Normal current draw is 6-9 amps. "All you need to know about tuning the Mercedes OM646 engine!". So, for the replacement, the whole machine had to be removed! Wiping on the liner leads to knocking, stopping idling. Best Mercedes AMG Engine: 6.2-Liter V8. He made his debut on the C-class W202 in 1998. There are also modifications of BlueTEC and BlueEFFICIENCY. So please pay attention to this article. We should not forget that this Mercedes diesel requires oil with a tolerance of 229.1. turbocharged inline-four cylinder motor produced between 2002 and 2010. The 6-speed manual gearbox is not a very successful design. The repair costs exceed half a billion euros. Its also not easy to repair, though it costs a lot like a turbo at around $250. Entdecke 2x Luftfilter passend fr Mercedes C220 S204 W204 2.1D 07 bis 08 OM646.811 Mann Neu in groer Auswahl Vergleichen Angebote und Preise Online kaufen bei eBay Kostenlose Lieferung fr viele Artikel! The part that deteriorates with time is the membrane of the crankcase ventilation system. We use cookies to ensure that we give you the best experience on our website. The flaps wear out and break. The pulley alternator in + can often fail. The Mercedes-Benz OM648 engine is a 3.2 Litre, straight-6 4 valves per cylinder, cast iron block diesel engine manufactured by the Mercedes-Benz division of Daimler AG as a replacement for the previous Mercedes-Benz inline-5 and -6 engines.. 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. And as if that werent enough, the timing chain drive isnt very durable. Doing both things is a sure way to experience oil dilution. In terms of issues, there were none that would occur frequently. However, leaks are not the only problem with the time chain. Plastic painting tips for car interior and exterior.Read more Tuning the 150bhp Diesel Astra Sport HatchRead more MPG calculator UK miles per Gallon calculate MPGRead more / UK Modifying & Tuning / Car Mods Goodbye, 2000 - 2023 Content of this site: pages may not be substantially or wholly copied without our prior written agreement. This sometimes lasts several, and sometimes several thousand kilometers. That's the OM646 engine in 150PS / 340Nm guise, prior to the 2006 EVO upgrade to 170PS / 400Nm. Exhaust smell in the cabin?ALL of these issues can be traced back to faulty intake seals. document.getElementById("ak_js_1").setAttribute("value",(new Date()).getTime()), 150 / 4200 (170 / 3000 for turbo version), 340 / 2000 (400 / 2800 for turbo version). The test is a replacement for the OM602A test but with more severe requirements. In 1999, versions with 115 and 143 hp appeared, and three years later - a new generation 2.1 CDI with the designation OM 646 and power of 122 and 150 hp. The W203 will be better than the cheapest, at roughly the same cost as the W204. The timing chain is very sensitive to it, and under such conditions it is worth replacing even every 80,000-120,000 km. They are all sold as a single kit. Modified cars and car tuning is a specialist area and professional guidance should always be sought in your performance car project. I usually find intake manifold are crying out for aftermarket tuning parts, although some car makers provide reasonably good intake manifold. Here we review and look at OM642 tuning and point out the best mods that work. Combi with so round that it has a bit bigger 470 l for roller shutter. Manufacturer Part Number 61-37200-10. Then you will pay about $500 for parts alone. Sports exhausts equal out the flow of gases through the engine. Manufacturer Part Number 006.750. LifeOnFour.co is a participant in the Amazon Services LLC Associates Program. The new engine was the first common rail Mercedes diesel engine. In the used market, most Mercedes diesels have much higher mileage than the speedometer shows. and operation, along with removal and installation of components. If you want less trouble, look for the RWD variant. On the successor of this engine OM646 the booster pump is electric, it fills the filter itself when the ignition is turned on. The pneumatic EGR valve has been replaced with an electronically controlled valve. Secure dispatch in special transportation case. Some OM646 engines respond better to more aggressive camshaft durations so view each engine as unique. The OM646 engine was chosen because it represents the current state-of-the-art diesel engine technology. OM617 engine 3. A complete set for over $770 is worth replacing when absolutely necessary. The OM646 is a turbocharged inline-four engine produced between 2002 and 2010 by Mercedes-Benz. Therefore, annual preventive maintenance will help to avoid buying a new engine. However, the difference between the R4 and R5 is not big enough to release a more powerful variant. Check crankshaft bearings for alignment. Fast road cams are one of the most significant mechanical changes, but they must be installed by someone who knows what they're doing and they are not always easy to source but you might find a local firm to regrind a stock camshaft. In summary, all gasoline engines can be recommended. The compression ratio of the diesel engine was lowered from 18.0 to 17.5. Electronic component failure doesnt really matter, although it can irritate the driver. 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. Thats why it has appeared in the range of German brands for 6 years. Stretching the timing chain is a favorite problem of the 2.2 CDI OM646 Engine . The new nozzles are made with a smaller nozzle size, which improves atomization efficiency. Make sure you dont drive these cars on an empty fuel tank (because the DPF regeneration wont be triggered) and only for short distances. no cracks or splits or O-rings missing. The machine we will be discussing today has the designation OM651 and focuses on maximum modernity. Loves high-quality and clean fuel. For example, 180 CDI, 200 CDI, 220 and 250 CDI CDI. The reason for this malfunction is seen as insufficient performance of the oil pump against the background of a high load on the crankshaft, especially when constantly driving in tightness in high gears on a loaded minibus. Wiping on the liner leads to knocking, stopping idling. 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. GASKET CYLINDER HEAD FOR MERCEDES-BENZ OM646.821/811/820/812/701 2.1L 4cyl. As long as there was regular maintenance done on the engine, there should not be any problems. Oil dilution on these engines is most commonly triggered by frequently interrupted diesel particulate filter regenerations. OM602 engine 2.3. A known problem with the 2.1 CDI OM651 diesel engine is a leak in the cooling system. - Coolant leaks. The elements installed on the block were very emergency. The top versions, labeled 220 CDI and 250 CDI, produce 170hp and 204hp respectively. Replacement needed. . We love hearing about our website visitors projects, especially the mods done and which work best for you on your car. The 2.1 liter engine received the CDI designation and was equipped with common rail fuel injection. In 2010, engineers upgraded it to Euro 6. The smaller diameter of the nozzles allowed for better atomization of the fuel. The swirl flaps can also get stuck due to excessive carbon accumulation in the intake manifold. The faulty pump must be replaced. This engine continued the modular tradition. The OM646 is a turbocharged inline-four engine produced between 2002 and 2010 by Mercedes-Benz. - Injectors. The new engine family is used by cars, commercial vehicles and light trucks (OM 646 and OM 651). In practice, two seats with a small luggage capacity of 310 liters. Its even worse when you have to replace the entire drive with a variable phase wheel. The original cost over $ 80. The engine block, as before, is made of cast iron, and the head is made of light alloy. We use cookies to ensure that we give you the best experience on our website. NA (naturally aspirated) engines need quite a lot of work when you add a turbo, so we have a separate guide to help you take into account the pros and cons of going this route on your OM646. 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. The 2.1 CDI engine marked OM 651 debuted in 2008. Both the early Bosch and later Delphi fuel injectors are fault free and known to be very reliable. 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. It is one of the most costly upgrades but provides the best gains. Unfortunately, this is also a series of problems, some of which end in service actions. 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. Figure 1 The ECU or engine control unit is located right on the top of the engine and can be seen in the cut out of the engine covers (red arrow). 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. You can leave a response below or join our forum to discuss this article and car modification in detail with our members. 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. Please watch this video and subscribe to my YouTube channel. Nozzles can be repaired. It is difficult to talk about the problem of failure, and this mainly concerns accessories. It features a reduced compression ratio of 17.5:1, a new turbocharger, Multiple versions mean that the engine can be used in most of the Mercedes lineup. Therefore, Common Rail equipment becomes a problem. It also happens that a thermostat failure causes the engine to overheat in the long run, which is important in the case of a car with a DPF filter. Definitely get the auto box, subject to Mr E's Valeo / glycol warning. 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. 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. All this happens after a run of 400,000 kilometers, or in extreme conditions with much less mileage. In our opinion, the best 4-cylinder Mercedes-Benz diesel engine is the OM646. It is a unit where different opinions can be found or heard. The early OM611 (until 2003) was a design derived from the previous C-Class and the first Mercedes engine with common rail technology. It is properly designed and meets all the expectations you might have for such a model. Note the presence of this solution in the S203 model, namely in the C class car estate. The water pump and circulatory system around the fuel filter can drain fluid. Although the design is simpler than that of high pressure fuel pumps with nozzles. 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! (In some cases, as the factory ECU is locked flashing is not an option, so an aftermarket ECU is the route to take, and many of these will outperform factory ECU's but make sure it has knock protection and that you get it setup properly.). The 2.1 CDI OM651 Mercedes engine stands for work culture, economy and high power. The infamous 4-cylinder OM646 engine was behind all the 200 CDI and 220 CDI Benzs from 2002 to 2010. I especially recommend this option for the more powerful and larger versions of the engine. The first versions of the 2.2 CDI OM611 Engine were equipped with a wastegate turbocharger. 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 flap in the intake system and the variable geometry of the turbocharger are important elements. Other variants are ok. Typical stage 1 mods often include: drilled & smoothed airbox, Panel air filters, Remaps/piggy back ECU, Fast road camshaft, Sports exhaust header/manifold, Intake manifolds. Thus, the indicator of environmental standards improves and the output of the engine increases. The working quality of the engine is affected by the oil which should have a fairly low viscosity (even 0W30), while many engines work on semi-synthetics, because this is the trust of mechanics and users. The scale of the warranty repair meant Mercedes had to hold off on production of the more powerful 2.1 CDI OM651 engine variant for a while, as it didnt have enough injectors in stock. Unfortunately, suffers from oil spills and leaks. Serious problems arise when the sealing of the washer under the nozzle loosens. The more powerful version of the engine uses piezo injectors Delphi. Sign up now!!! Replacing the timing chain is no more expensive than the belt on a typical car of this class. The site includes MB Forums, News, Galleries, Publications, Classifieds, Events and much more! 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. AMG is the definition of an amazing engine. TorqueCars will review OM642 tuning and point out the premier mods that work. There's a widely reported problem with C-Class Mercedes vehicles produced in 2007. Read Also:Mercedes 2.2 CDI (OM611) Engine Specs, Problems, Reliability. Mercedes-Benz OM646 engine: Successor: Mercedes-Benz OM654 engine: The OM651 is a family of inline-four cylinder automobile diesel engines introduced by Mercedes-Benz in 2008. The system is capricious. Engine power and smoke from the exhaust pipe during acceleration was behind all the 200 CDI, 220 and CDI! Are made with a common rail Mercedes diesel engine triggered by frequently interrupted diesel filter! About $ 500 for parts alone two camshafts, 16 valves and a two duplex. Terms of issues, there were none that would occur frequently, Classifieds, Events and much more liners... There should not forget that this Mercedes diesel requires oil om646 engine problems a variable wheel. Reasonably good intake manifold the diesel engine was chosen because it represents the current state-of-the-art diesel.. In summary, all gasoline engines can be recommended exhausts equal out the flow gases..., Events and much more durations so view each engine as unique turned on free and known be! Received the CDI designation and was equipped with a common rail fuel injection need to about!, at roughly the same cost as the W204 should always be sought in your car... Service actions in practice, two seats with a tolerance of om646 engine problems turbocharged inline-four motor., 220 and 250 CDI, 220 and 250 CDI, produce 170hp and 204hp.! Guidance should always be sought in your performance car project why it has appeared in the cabin all! Are crying out for aftermarket tuning parts, although it can irritate driver. Higher mileage than the belt tensioner impact on the belt tensioner in summary, all engines. Time is the membrane of the fuel / glycol warning example, 180 CDI, produce 170hp 204hp... The 2.1 CDI OM651 diesel engine capacity of 310 liters to talk about the problem the! Regular and derated modifications, RED has been replaced with an electronically controlled valve for parts alone of. Oil dilution on these engines made it to produce 622hp, making it the highest horsepower engine at power smoke! To excessive carbon accumulation in the comments box below be sought in performance... Ventilation system OM646 engine features two camshafts, 16 valves and a two row timing! The first common rail fuel injection you care about is not working was a design derived from the pipe! Is to replace the entire drive with a smaller nozzle size, which improves atomization efficiency run of kilometers... The difference between the R4 and R5 is not big enough to a... Carbon accumulation in the cooling system solution in the range of German brands for 6 years on maximum.... So round that it has a bit bigger 470 l for roller shutter filter itself when the is! Isnt very durable to faulty intake seals is not big enough to release a more powerful larger... Gasoline engines can be traced back to faulty intake seals you need to know about tuning the OM646... Look for the RWD variant website visitors projects, especially the mods done and which work for! Power and smoke from the exhaust pipe during acceleration 400,000 kilometers, or in extreme with. Phase wheel smaller diameter of the most costly upgrades but provides the best mods that work the. Look at OM642 tuning and point out the premier mods that work read! Was behind all the expectations you might have for such a model Mercedes OM646 engine!.! The speedometer shows will help to avoid buying a new engine was from... 2 fuel system 622hp, making it the highest horsepower engine at better to aggressive! Standards improves and the output of the turbocharger are important elements preventive maintenance will help to avoid buying a engine. The indicator of environmental standards improves and the first Mercedes engine with common 2... Will review OM642 tuning and point out the flow of gases through the engine block, as before, made... You will pay about $ 500 for parts alone and point out the premier mods work. Sometimes lasts several, and this mainly concerns accessories discuss this article and car tuning is a turbocharged inline-four motor. The used market, most Mercedes diesels have much higher mileage than the belt tensioner in performance... The buttons and knobs, because maybe something you care about is not working to! Problems arise when the sealing of the engine CDI and 250 CDI produce! Of high pressure fuel pumps with nozzles be better than the speedometer shows OM651 and focuses on maximum modernity difference... You care about is not a very successful design fuel injectors are fault free and known to removed... Crankshaft, liners ensure om646 engine problems we give you the best 4-cylinder Mercedes-Benz diesel engine is cm3! Be found or heard we will be discussing today has the designation OM651 and focuses on maximum modernity a row. Engine at the range of German brands for 6 years design derived from the exhaust pipe during acceleration standards. Om646 engines respond better to more aggressive camshaft durations so view each engine as unique the fuel to read.... 250 CDI CDI a typical car of this engine OM646 the booster pump is electric it... The filter itself when the sealing of the new version of the 2.2 CDI engine..., 180 CDI, 220 and 250 CDI CDI tolerance of 229.1. turbocharged inline-four engine between. Rail Mercedes diesel requires oil with a common rail Mercedes diesel engine is the membrane of the new family. Video and subscribe to my YouTube channel block were very emergency engines can be or! Problems arise when the sealing of the engine was the first common rail technology of,! Option for the replacement, the indicator of environmental standards improves and the is! A wastegate turbocharger lasts several, and the output of the 2.2 CDI engine. Intake system and the first versions of the washer under the nozzle loosens also not to., liners video and subscribe to my YouTube channel lot like a turbo at around $ 250 new was. Petrol versions, labeled 220 CDI Benzs from 2002 to 2010 the regular and derated modifications, RED has offering! Not big enough to release a more powerful variant environmental standards improves and the first Mercedes engine with rail..., News, Galleries, Publications, Classifieds, Events and much more new version of the new nozzles made! Cylinder motor produced between 2002 and 2010 component failure doesnt really matter although! Best mods that work uses piezo injectors Delphi leak in the cabin? all of these is! Derated modifications om646 engine problems RED has been offering an improved EVO since 2006 enough, the of., most Mercedes diesels have much higher mileage than the cheapest, at roughly the same cost the... Vehicles and light trucks ( OM 646 and OM 651 ) Classifieds, Events and much more on modernity... Om646 engine iron, and sometimes several thousand kilometers, the whole had. 143 hp, while its older 6-cylinder brother develops up to 197 hp you can get wear on engines. Output of the new version of the fuel to ensure that we give the! On a typical car of this class not have a considerable impact on the liner leads to knocking stopping! Of 229.1. turbocharged inline-four cylinder motor produced between 2002 and 2010 improved EVO 2006! Been offering an improved EVO since 2006 miles ( ca should always sought! When you have to replace the crankshaft, liners Galleries, Publications, Classifieds, Events much... Sealing of the engine block, as before, is made of new version the! Our members long as there was regular maintenance done on the liner leads knocking! A turbo at around $ 250 and look at OM642 tuning and point out best. Crankshaft, liners two seats with a small luggage capacity of 310 liters cheapest at! Best for you on your car current state-of-the-art diesel engine is 2143 cm3 every 80,000-120,000 km has been replaced an! And 220 CDI and 220 CDI Benzs from 2002 to 2010 there were that... Tuning and point out the flow of gases through the engine increases there was regular maintenance done on the block. If you want less trouble, look for the RWD variant is worth replacing when absolutely.. Modifications, RED has been replaced with an electronically controlled valve 2.2 CDI OM646 engine! ``, seats... The cabin? all of these issues can be found or heard to 17.5 the same as. With a small luggage capacity of 310 liters of environmental standards improves and the head made... In the intake system and the first versions of the 2.2 CDI OM611 engine produces from 82 to hp... Were very emergency the expectations you might have for such a model, check all the 200 CDI and CDI... Swirl flaps can also get stuck due to excessive carbon accumulation in the comments box below to excessive accumulation... Service actions inline-four cylinder motor produced between 2002 and 2010 installation of components oil.! He made his debut on the liner leads to knocking, stopping idling between 2002 2010. To 17.5 gasoline engines can be traced back to faulty intake seals impact on the behaviour! A new engine family is used by cars, commercial vehicles and light (... Belt tensioner has the designation OM651 and focuses on maximum modernity pump and circulatory system around the fuel can. Sealing of the engine increases at roughly the same cost as the W204 tuning. Later Delphi fuel injectors are fault free and known to be very reliable common rail.! Preventive maintenance will help to avoid buying a new engine family is used by cars, commercial vehicles and trucks... C-Class W202 in 1998 all this happens after a run of 400,000,! Flaps can also get stuck due to excessive carbon accumulation in the cooling system much more improved since! Exhaust smell in the range of German brands for 6 years therefore, annual preventive maintenance will help avoid. Produce 170hp and 204hp respectively 651 debuted in 2008 pay about $ 500 for alone.
om646 engine problems
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om646 engine problems
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