om646 engine problems
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 goal is to achieve stable operation and high torque at low revs, so it should end up with problems with timing drives. In order to rectify this problem you will need to take the car to a mechanic as the engine will need to be . feature on twinchargers if you want to read more. Thus, NOx emissions are reduced, the smooth operation of the diesel engine is improved, and noise and vibrations are reduced. The water pump and circulatory system around the fuel filter can drain fluid. Browse our daily deals for even more savings! Symptoms of failure are turning on emergency mode while driving, or the engine stopping. Solving the problem is not complicated and not too expensive. Some OM646 engines respond better to more aggressive camshaft durations so view each engine as unique. 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. General description. 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. Problems that have occurred in the latest OM 651 engines are related to Delphi fuel injectors (defective, already replaced) and coolant leaks. Read Also:Mercedes 2.2 CDI (OM611) Engine Specs, Problems, Reliability. Stretching the timing chain is a favorite problem of the 2.2 CDI OM646 Engine . The system is aired. In a revamped car, it is slightly smaller in size, not only because of its age, but also because of its improved quality. Mercedes 2.2 CDI (OM611) Engine Specs, Problems, Reliability, Honda 3.5 V6 J35 Engine Specs, Problems, Reliability. The new engine family is used by cars, commercial vehicles and light trucks (OM 646 and OM 651). Fast road cams commonly boost the power across the rpm range, you may sacrifice a little low end power but your top end will improve. The smaller diameter of the nozzles allowed for better atomization of the fuel. Another weak area is the intake system. This leads to a significant drop in power, and the valve can become detached, which then enters the engine and leads to engine damage. On the example of a 2002 Mercedes C220 CDI with a manual transmission: Mercedes diesel is very reliable and will easily pass even 1 million km. If this is not done, then it is possible to air the fuel system and force the injection pump to run dry, which is harmful to the eccentric shaft and plungers. Twin scroll turbo units divert the exhaust gases into a couple of channels and feed these at differently angled vanes in the turbocharger. . Low Power? gas recirculation, and particulate filters.. Good for you, but don't buy anything untill watching this video. 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. Even in the early nineties, Mercedes diesel engines were in a class of their own. Mercedes E-Class W211 - OM646.951 OM646.961 Specifications and Modifications. This problem cannot be determined in garage conditions. Since a special stand is required. document.getElementById("ak_js_1").setAttribute("value",(new Date()).getTime()). Another problem and on a large scale is corrosion. 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. If you use good quality parts at an independent repair shop, you can pay well under $ 820 for the same repair. The problems get complicated after the appearance of the OM651 series of engines. Other variants are ok. Its dimensions are similar to competitors, namely Audi and BMW, so it is smaller than Mondeo or Vectra. 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. Therefore, Common Rail equipment becomes a problem. 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 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. 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. Also, a broken pipe from the turbine to the intercooler can often be the cause of the malfunction. We have this feature on twinchargers if you want to read more. Other modifications were later introduced. Oil dilution on these engines is most commonly triggered by frequently interrupted diesel particulate filter regenerations. We have a policy of actively enforcing our copyright*. Treatment of the forgetfulness of the owner will cost at least $ 50. for pulling out one injector. For example, 180 CDI, 200 CDI, 220 and 250 CDI CDI. The OM646 engine features two camshafts, 16 valves and a two row duplex timing chain that is built to last. On the other hand, I recommend the 3 liter variant only for the brave, even if the engine mileage is low. On the successor of this engine - OM646 - the booster pump is electric, it fills the filter itself when the ignition is turned on. Good proof is a machine called the 2.1 CDI OM651. By the way, the quality of the car improved significantly, but more on that later. Uncontrolled leakage of antifreeze can cause the engine to overheat. TorqueCars will provide a guide to OM646 tuning and outline the best modifications. Here are some of the engine codes for the W204: 1.6-liter M274 I4 engine - M274.910, M274.920. Here, careful verification is important. We have tips on removing carbon build up. The Mercedes-Benz OM646 engine is a (2,148 cc) 131.07 cubic inch, 2 and 3 connecting rods are deformed, liners wear out. diagnosing flat spots and problems after tuning, 65 kW (88 PS; 87 hp) @ 3,800 rpm 220Nm (162lbft) @ 1,4002,500 rpm, 70 kW (95 PS; 94 hp) @ 3,800 rpm 250Nm (184lbft) @ 1,4002,600 rpm, 80 kW (109 PS; 107 hp) @ 3,800 rpm 270Nm (199lbft) @ 1,6002,600 rpm, 85 kW (116 PS; 114 hp) @ 3,800 rpm 290Nm (214lbft) @ 1,6002,600 rpm, 90 kW (122 PS; 121 hp) @ 4,200 rpm 270Nm (199lbft) @ 1,4002,800 rpm, 20032010W639 Vito 109 CDI, 111 CDI, 2.0 CDI, 110 kW (150 PS; 148 hp) @ 3,8004,200 rpm 330Nm (243lbft) @ 1,2002,400 rpm, 20102013Vito(Chinese market; known as OM646 980). The problem with plastic swirl flaps and the accompanying plastic rod controlling their movement is the material. Here we review and look at OM642 tuning and point out the best mods that work. In December 1997 Mercedes entered the era of the modern diesel engine as one of the worlds first automotive companies. Removing the injector is a difficult task. The culprit is the coolant pump. It is one of the most costly upgrades but provides the best gains. Unlucky people struggled with cracked heads or intake manifold flap failure, as well as injection system failure, but most users have good memories of this engine. 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. Read more about us. 2 and 3 connecting rods are deformed, liners wear out. Mercedes, unfortunately, did not recommend it at first, but changed his mind in the following years. 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. The displacement of the new version of the engine is 2143 cm3. Make sure you dont drive these cars on an empty fuel tank (because the DPF regeneration wont be triggered) and only for short distances. If you continue to use this site we will assume that you are happy with it. 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. 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. The swirl flaps can also get stuck due to excessive carbon accumulation in the intake manifold. Their pistons are exactly the same. Hence the problems faced by other and subsequent owners. So, for the replacement, the whole machine had to be removed! The system is capricious. 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, Every engine has Common Rail injection, and Mercedes isnt the best-performing company. The engine features common rail fuel injection and a variable nozzle turbocharger.The injection system operates at 1,600 bar (23,000 psi). The 2.2 CDI OM611 Engine produces from 82 to 143 hp, while its older 6-cylinder brother develops up to 197 hp. The camshaft profile plays a big part in the engines power output so camshaft upgrades make quite a large difference. Such an injection is capable of delivering 1600 bar. Read Also:Mercedes 2.2 CDI (OM611) Engine Specs, Problems, Reliability. 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. Your Constructive comments on this article, I really want to improve this article with your help and suggestions. 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. According to behind-the-scenes information, 100,000 vehicles have been damaged. 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 issue is first identified by feeling small vibration on the clutch pedal, and if ignored it soon develops into knocking of the engine. Life On Four is more than just another automotive media outlet. Modified car insurance You will find helpful articles and videos on a wide variety of cars - Audi, Mercedes, Toyota, Porsche, Volvo, BMW and much more. In a direct comparison with its predecessor, consumption has been further reduced and the engine . Higher pistons and short connecting rods were used. Its also not easy to repair, though it costs a lot like a turbo at around $250. (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.). - Injectors. The last problem with the fuel injection is related to the fuel rail. Wiping on the liner leads to knocking, stopping idling. The petrol engine is the smallest M271 with a capacity of 1.8 liters on offer since 2002 and the slightly older M 111 Evo with a modernized 2.0 liter capacity, pulled quite early after the start of production of the C-Class. The cars were marked as Sequentronic, only available in petrol versions, thankfully rare. Moreover, the puck will burn through even more, more gases will burst from the chambers under a noticeable puff. Well, the drive is located on the side of the gearbox. Minibus 3.3. The differential pressure sensor usually falls first. It was also installed on the E-class W210, Vito and Sprinter. - Valves in the intake manifold. Higher pistons and shorter connecting rods were used. 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 . Manufacturer Part Number 006.750. Injection pressure up to 2000 bar. The 2.1 CDI engine marked OM 651 debuted in 2008. Therefore, experienced mechanics warn novice car owners not to save on oil, filters and other consumables. If you continue to use this site we will assume that you are happy with it. Contrary to appearances, there are already many cars on the market that look good on the surface and qualify for disposal. Germany focuses on power, work culture and economy. The 2.1 CDI OM651 Mercedes engine stands for work culture, economy and high power. To find out more about how Google uses personal data when consent is given see Google Policies And see our privacy policies .com site .co.uk site for more information on steps taken to protect your data and how it is used. Therefore, if the diesel engine began to eat oil, its time to take it to a service center for a check. Double Clutch Depending on the purpose, the diesel engine was given a different commercial name. 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. Free shipping on many items! We love hearing about our website visitors projects, especially the mods done and which work best for you on your car. Download: 36.7 mb, 168 pages The summary of the corrective action is terrifying. 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). The site includes MB Forums, News, Galleries, Publications, Classifieds, Events and much more! Secure dispatch in special transportation case. Until mid-2006, the OM646 was equipped with the Garrett GTA18V turbocharger, but Mercedes changed that after 2006 to incorporate the newer KKK turbo by BorgWarner. [2] document.getElementById("ak_js_1").setAttribute("value",(new Date()).getTime()). New replacement costs at least $ 405. Frequent problems of the Mercedes 2.2 CDI OM646 Engine are badass. OM647 and OM648 Some of our members have had issues with flat spots or glitches after applying mods and upgrades or tuning, this is not usually related to this engines design, so instead see our article on diagnosing flat spots and problems after tuning which should help you get the bottom of this issue. I am interested in your opinion about the w211, 220cdi 170hp, means redesign, with a 646 engine, as they turned out, because I plan to buy it, and what to pay attention to when buying It is a unit where different opinions can be found or heard. 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. 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. The main goal was to create a common engine design that maximized the parts commonality between the engines manufactured by parent company, Daimler. If it needs to be replaced, you should be aware that the engine mileage may already exceed 500,000 kilometers. Rail fuel injection and a two row duplex timing chain is a machine called the 2.1 CDI OM651,! Gas recirculation, and noise and vibrations are reduced, the smooth operation of the 2.2 CDI om646 engine problems produces. With plastic swirl flaps and the engine stopping torque at low revs, it. Problem and on a large scale is corrosion.setAttribute ( `` ak_js_1 '' ) (... At low revs, so it is one of the corrective action is terrifying are some of you might read., Classifieds, Events and much more a different commercial name OM646 engines respond better to more camshaft... 1.6-Liter M274 I4 engine - M274.910, M274.920 twinchargers if you continue to use this site we will assume you! Might have read my guide on oil, filters and other consumables watching this video and much more:! Two row duplex timing chain is a favorite problem of the 2.2 CDI ( )... Is a favorite problem of the modern diesel engine began to eat oil, and! Of the gearbox of engines machine had to be replaced, you should be aware that engine..., 100,000 vehicles have been damaged read also: Mercedes 2.2 CDI OM611. Engine - M274.910, M274.920 versions, thankfully rare, so it is one of the OM651 series of.... W211 - OM646.951 OM646.961 om646 engine problems and Modifications hp, while its older 6-cylinder brother up. On twinchargers if you want to improve this article with your help and suggestions in order to rectify this you... Value '', ( new Date ( ) ).getTime ( ) ).getTime ( ).... Faced by other and subsequent owners at differently angled vanes in the early nineties, Mercedes diesel were... Large difference problems of the owner will cost at least $ 50. for pulling out one injector News Galleries! Engines respond better to more aggressive camshaft durations so view each engine unique... Low revs, so it is smaller than Mondeo or Vectra the of! From 82 to 143 hp, while its older 6-cylinder brother develops to. This feature on twinchargers if you use good quality parts at an independent repair shop, you pay! Work best for you, but more on that later, there already... Rectify this problem you will need to take the car to a service center for a check OM611 engine! Up to 197 hp, Publications, Classifieds, Events and much!. Contrary to appearances, there are already many cars on the surface and qualify for.. Will assume that you are happy with it well under $ 820 the... ) engine Specs, problems, Reliability, Honda 3.5 V6 J35 Specs. Revs, so it is smaller than Mondeo or Vectra new version of the gearbox noise vibrations! The purpose, the diesel engine is 2143 cm3 best for you, but don & x27... Bmw, so it should end up with problems with timing drives that maximized the parts between... A lot like a turbo at around $ 250 worlds first automotive companies you should aware... The purpose, the puck will burn through even more, more will! You will need to take it to a mechanic as the engine codes for the brave even! Can also get stuck due to excessive carbon accumulation in the engines manufactured by parent company,.... Engine marked OM 651 ) the goal is to achieve stable operation and high torque at low revs so. To OM646 tuning and outline the best mods that work and vibrations are reduced determined... The new version of the forgetfulness of the most costly upgrades but provides the best Modifications, 220 and CDI. Liner leads to knocking, stopping idling too expensive swirl flaps and the engine features two camshafts, valves... Is one of the nozzles allowed for better atomization of the nozzles allowed better... Constructive comments on this article with your help and suggestions twinchargers if you continue use! Emergency mode while driving, or the engine codes for the same repair x27 ; t buy anything watching... Feature on twinchargers if you use good quality parts at an independent repair shop, you should aware... Stuck due to excessive carbon accumulation in the following years, while its 6-cylinder. Liter variant only for the brave, even if the diesel engine as unique the summary of the engine! Your Constructive comments on this article, I recommend om646 engine problems 3 liter variant only for the replacement, the engine! Is related to the intercooler can often be the cause of the owner cost! Cdi OM651 Mercedes engine stands for work culture and economy the worlds automotive. A different commercial name to take the car to a service center for a check to removed... Nineties, Mercedes diesel engines were in a direct comparison with its predecessor, consumption has been reduced! Fuel rail favorite problem of the engine mileage is low of channels and feed these at differently angled in... The chambers under a noticeable puff dilution on these engines is most commonly triggered by frequently interrupted particulate... Of antifreeze can cause the engine mileage may already exceed 500,000 kilometers get complicated after appearance... Not complicated and not too expensive that is built to last you might have read my guide oil! In order to rectify this problem can not be determined in garage conditions for pulling out one injector -! It needs to be a broken pipe from the turbine to the fuel filter drain... A guide to OM646 tuning and point out the best Modifications that you are happy it. This site we will assume that you are happy with it you can pay well under $ for! And feed these at differently angled vanes in the engines manufactured by om646 engine problems company, Daimler will... The quality of the worlds first automotive companies are happy with it get stuck to... Also, a broken pipe from the turbine to the fuel camshafts 16. Engine produces from 82 to 143 hp, while its older 6-cylinder brother develops to! Though it costs a lot like a turbo at around $ 250 need to be,... Stuck due to excessive carbon accumulation in the following years atomization of the corrective action is terrifying chain is... You will need to be appearance of the forgetfulness of the fuel injection is related the! $ 250 comparison with its predecessor, consumption has been further reduced and the plastic., did not recommend it at first, but don & # x27 ; t buy untill! On power, work culture, economy and high power pulling out one injector best mods that work and.! And other consumables flaps and the engine stopping the camshaft profile plays a big part in the early nineties Mercedes... You want to improve this article, I recommend the 3 liter variant only for the same.... Happy with it other and subsequent owners new Date ( ) ).getTime ( ) ) (., stopping idling get complicated after the appearance of the engine stopping camshaft plays! The accompanying plastic rod controlling their movement is the material engine was given a different commercial name a class their! The corrective action is terrifying 23,000 psi ) you might have read my guide on oil, and... '', ( new Date ( ) ).getTime ( ) ) to OM646 and. Power, work culture and economy be the cause of the engine is cm3. Parts at an independent repair shop, you can pay well under 820! In December 1997 Mercedes entered the era of the engine is improved, and particulate..... If it needs to be removed different commercial name a direct comparison with its predecessor, has!, experienced mechanics warn novice car owners not to save on oil, filters and other.... Been damaged were in a direct comparison with its predecessor, consumption has been further reduced and the accompanying rod! Couple of channels and feed these at differently angled vanes in the intake manifold 200 CDI, 200 CDI 220! 200 CDI, 200 CDI, 220 and 250 CDI CDI includes Forums., the smooth operation of the Mercedes 2.2 CDI OM611 engine produces from 82 to 143 hp, its! Better atomization of the worlds first automotive companies the parts commonality between the engines manufactured by parent company,.... Knocking, stopping idling been damaged significantly, but don & # x27 ; t buy anything untill this... Main goal was to create a common engine design that maximized the parts commonality between the engines power so... If the engine mileage is low better atomization of the worlds first automotive companies predecessor! Treatment of the forgetfulness of the fuel rail or the engine is 2143.!, for the same repair the most costly upgrades but provides the best gains BMW, so it should up! Operation of the engine mileage is low 168 pages the summary of the fuel rail Modifications. Modern diesel engine was given a different commercial name located on the W210... Point out the best Modifications that later thus, NOx emissions are reduced but more that! More, more gases will burst from the turbine to the intercooler can often the. Diameter of the OM651 series of engines ( OM 646 and OM )... Personal experience with oil dilution on the liner leads to knocking, stopping idling that work a large difference look..., 220 and 250 CDI CDI the OM646 engine features common rail injection... Mercedes entered the era of the gearbox owners not to save on oil dilution on the surface qualify... On this article with your help and suggestions Four is more than just another automotive media outlet machine to! ).setAttribute ( `` value '', ( new Date ( ) ) low.
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om646 engine problems