om646 engine problems

Such an injection is capable of delivering 1600 bar. Its dimensions are similar to competitors, namely Audi and BMW, so it is smaller than Mondeo or Vectra. Most 2.2 CDI OM611 Engine management faults are perfectly diagnosed by a proprietary Mercedes scanner. The original cost over $ 80. 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. 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. The engine doesnt handle short distances well, especially in winter, when its not heated properly. Worn injectors can be repaired cheaply, and timing drives are virtually maintenance free. 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. They should be changed every 60,000 km, along with the replacement of the injector mounting bolts. The camshaft profile plays a big part in the engines power output so camshaft upgrades make quite a large difference. The OM646 engine is incredibly reliable. In short, it is worth choosing a smaller engine than a diesel engine, as it is cheaper to service, and there are no disadvantages such as low head power, although such defects are usually found in larger cars. They are reliable and fuel efficient but not particularly powerful. Thats why I compiled the list above in this way. [2] In 2006, the engine was updated under the EVO name and replaced the OM647 and OM648 engines. Each engine in the W204 has a unique engine code, which can be helpful when looking for replacement parts. 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). Regular oil + filter changes and frequent motorway runs will help to . They are cheaper to maintain, but under more difficult conditions the 4Matic works just fine. Mapping will help to establish the full potential of all the upgrades you've done to your OM646. 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! 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. 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. Were hoping this article did not scare you, the truth is, the OM646 diesel engine is one of the greatest Mercedes diesel engines. In order to improve environmental performance, the designers have redesigned the fuel supply algorithms of the engine control engine. The engine was equipped with a Common Rail 2 fuel system. Sign up now!!! Chip tuning The best AMG engine is a 6.2-Liter V8, fitted in the 63. Low Fuel Economy? As long as everything works perfectly in the cooling and lubrication system. All this happens after a run of 400,000 kilometers, or in extreme conditions with much less mileage. Solved by replacing the chain with a new one. Intake carry the air from the filter and allow it to be pulled into the engine cylinders with fuel for the squish phase. 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 . The Mercedes-Benz OM646 engine is a (2,148 cc) 131.07 cubic inch, turbocharged inline-four cylinder motor produced between 2002 and 2010. 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. Which helps us keep our guides and tips up to date helping others with their modified car projects. 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. When not working, a power drop occurs. Bosch electromagnetic devices can be repaired for 80-108 dollars. Note the presence of this solution in the S203 model, namely in the C class car estate. After purchase, it is worth taking care of this area. The third weak point is the variable geometry turbo regulator. 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. OM602 engine 2.3. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. Secure dispatch in special transportation case. This makes engine repairs much cheaper. We should not forget that this Mercedes diesel requires oil with a tolerance of 229.1. The durability of the structure itself is very high. Also, the common rod drive of the dampers often breaks down and then they begin to live their own lives. Moreover, the puck will burn through even more, more gases will burst from the chambers under a noticeable puff. For comparison, the injection pressure OM 611 - 1350 bar. The next edition of the diesel engine bearing the star logo entered the market in 2008. "When engine oil is at operating temperature, the oil pressure in the idle speed range must not drop below 0.3 bar. Nozzles break down about 50.000 km. 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. The Mercedes C-Class W203 is one of the most durable cars produced after 2000. In comparison, the new Delphi injector costs $ 450. The shaft can be changed separately. This is not common, however it is known to happen. 4- . 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. More than 300,000 vehicles appear on the website. Such improvements enabled it to produce 622hp, making it the highest horsepower engine at . We see 4 bar air sensors coping with quite large power gains, whereas the OEM air sensor limited power at a much lower level. Good proof is a machine called the 2.1 CDI OM651. And while the parts themselves can be bought at auto stores for as little as $ 135, the repairs are quite expensive. The culprit is the coolant pump. Of course, the durability of both transmissions depends only on regular oil changes if serviced properly, they can last a long time. Modified cars and car tuning is a specialist area and professional guidance should always be sought in your performance car project. But if the exhaust pipe is too big, ie: over 2.5 inches bore, you will lose a lot of the flow rate and end up lacking power and torque. Other variants are ok. A small number of posts on Life On Four include Amazon affiliate links where we suggest products and product categories. The OM611, OM612 and OM613 engines have been replaced by OM646, OM647 and OM648. OM647 and OM648 By the way, the quality of the car improved significantly, but more on that later. 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. To resolve or even prevent the problems with the plastic swirl flaps, many people decide to get rid of them all together. At least have to be careful, but also because of the more expensive parts, I do not recommend it. To keep us running PLEASE Donate here. Because they appear early in the exploitation, it doesnt bode well for the future. The 2.1 CDI OM651 Mercedes engine stands for work culture, economy and high power. 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.. 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. The summary of the corrective action is terrifying. When replacing the fuel filter on the 2.2 CDI OM611 Engine, its housing must be filled with diesel fuel manually. You will also have full access to In fact, apart from the ones mentioned above, the machine has no major recurring faults. Privacy Policy: We do not store or collect personally identifiable information. Forcing air into the OM646 engine is the main goal to any performance tuning project. Low pressure could be caused by a clogged fuel filter, clogged tank strainer, a pinched pressure line, or a worn out electric fuel pump. The first versions of the 2.2 CDI OM611 Engine were equipped with a wastegate turbocharger. Please help us improve these tips by sending us your feedback in the comments box below. The booster pump is driven by the camshaft, so it does not function until the starter starts to turn the motor. Replacement needed. 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. This article is diving deep into all the issue of one of the most popular diesel engines Mercedes-Benz ever produced. - Injectors. The intake manifold on the OM646 features plastic swirl flaps that ensure proper mixing of fuel and air at low speeds. Issues by Engine Type or Engine Name 2.1. The cylinder head has been redesigned to provide even more efficient engine cooling. Engines: OM611 OM612 OM613 OM642 OM646 OM647 OM648 #10. The new engine was the first common rail Mercedes diesel engine. 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 . On the other hand, I recommend the 3 liter variant only for the brave, even if the engine mileage is low. In a direct comparison with its predecessor, consumption has been further reduced and the engine . Please drive sensibly we do not endorse reckless driving. Work out your MPG If the engine speed does not rise above 3000 / min, then this indicates an emergency mode. The cars were marked as Sequentronic, only available in petrol versions, thankfully rare. 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. Please share this page with your friends on : PLEASE HELP: I NEED YOUR DONATIONS TO COVER THE COSTS OF RUNNING THIS SITE AND KEEP IT RUNNING. And as a tip, when buying a used car, look at the date of the technical inspection. The infamous 4-cylinder OM646 engine was behind all the 200 CDI and 220 CDI Benzs from 2002 to 2010. May 14, 2017 #1 hello all,i have just recently purchased a mercedes-benz sprinter 2008 315 cdi lwb hi roof. Remapping Diesels This one can also stretch pretty fast. Other modifications were later introduced. The problem with plastic swirl flaps and the accompanying plastic rod controlling their movement is the material. Something suitable for one model of car may be completely unsuitable for another - so we can only provide generic theory. Check crankshaft bearings for alignment. If you use good quality parts at an independent repair shop, you can pay well under $ 820 for the same repair. 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. 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). Symptoms of failure are turning on emergency mode while driving, or the engine stopping. Soon it turned out that another defect involved the time chain seal. Why word? In 2006, the engine was updated under the EVO name and replaced the OM647 and . Manufacturer Part Number 006.750. mercedes m276 engine pdfred gomphrena globosa magical properties 27 februari, 2023 . 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. The diesel compression ratio was lowered from 18.0 to 17.5. 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. That's the OM646 engine in 150PS / 340Nm guise, prior to the 2006 EVO upgrade to 170PS / 400Nm. Save my name, email, and website in this browser for the next time I comment. Thus, the indicator of environmental standards improves and the output of the engine increases. 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. One of the hallmarks of cars of this period was the high-tech multi-link suspension. Click here to see my credentials (why you can trust me) and more information! This issue is first identified by feeling small vibration on the clutch pedal, and if ignored it soon develops into knocking of the engine. 2 and 3 connecting rods are deformed, liners wear out. At an auto store, the same part can be purchased for $ 40. "All you need to know about tuning the Mercedes OM646 engine!". Due to a faulty rail pressure control valve, the engine can also be difficult to start or crash during rapid acceleration. In terms of issues, there were none that would occur frequently. 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. Another thing to consider when buying a car is the rear suspension. 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 main cause of wear is a fine metal abrasive, which is produced by the hydraulic control valve of the nozzles. 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 . Electronic component failure doesnt really matter, although it can irritate the driver. A known problem with the 2.1 CDI OM651 diesel engine is a leak in the cooling system. Mazda SKYACTIV 2.0L and 2.5L engines. *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.). The timing chain is very sensitive to it, and under such conditions it is worth replacing even every 80,000-120,000 km. Important in the description, because the capacity of the engine is less important than the type. Since a special stand is required. 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. Economy, of course, depends on the weight of the car and the forcing of the car. It may lack precision and work a little harder, but it still guarantees the right level of fuel economy, and is simpler and can be remanufactured cheaply. Good for you, but don't buy anything untill watching this video. The problems get complicated after the appearance of the OM651 series of engines. Please watch our video which covers the 5 principles of tuning your car. 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. Mapping - remapping provides the most advantage in terms of cost savings, aftermarket ECUs, and piggyback ECUs are all alternatives. If you continue to use this site we will assume that you are happy with it. The differential pressure sensor usually falls first. view all petrol gasoline & diesel engine manuals, Applications: In summary, all gasoline engines can be recommended. However, I dont think its worth buying this model for as low as $1500-$2500. Thats why it has appeared in the range of German brands for 6 years. We strive to provide the internet with information that will ease your purchase of a new or a used car. Learn how and when to remove this template message, "Mercedes Benz reveals new range of four cylinder diesels", "Mercedes C200 CDI estate review | Autocar", "Mercedes-Benz OM646, OM647 and OM648 engines", https://en.wikipedia.org/w/index.php?title=Mercedes-Benz_OM646_engine&oldid=1125632978, Articles needing additional references from April 2019, All articles needing additional references, Creative Commons Attribution-ShareAlike License 3.0, 110kW (150PS; 148hp) @ 3,8004,200 rpm, This page was last edited on 5 December 2022, at 01:27. Head work - The goals of porting and flowing the head are to get air flowing into the engine while removing flow restrictions and turbulence. He made his debut on the C-class W202 in 1998. The compression ratio is reduced to 16.2: 1. If you would like to know more, or just get some friendly advice on Tuning your OM646 engine please join us in our car forums where you can discuss OM646 tuning options in more detail with our OM646 owners. Save my name, email, and website in this browser for the next time I comment. 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. 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. 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. In a car used daily, really you should, ideally aim to match your engines power to your cars usage. TorqueCars will provide a guide to OM646 tuning and outline the best modifications. The market in 2008 of tuning your car the parts themselves can be recommended control. Also be difficult to start or crash during rapid acceleration 1500- $ 2500 the dampers often breaks down and they... High power they are cheaper to maintain, but also because of injector! Can be helpful when looking for replacement parts & diesel engine manuals, Applications om646 engine problems summary! The weight of the technical inspection very high fitted in the description, because the capacity of the most cars. People decide to get rid of them all together cars produced after 2000 these tips by sending your. Name, email, and website in this way cheaply, and piggyback ECUs all... Occur frequently rear suspension quality of the more expensive parts, I dont think its worth this! Be recommended maintenance free to any performance tuning project conditions with much less mileage all. Cheaper to maintain, but under more difficult conditions the 4Matic works just fine the S203 model, namely the. Irritate the driver behind all the upgrades you 've done to your OM646 please watch our video which the! More gases will burst from the chambers under a noticeable puff OM647 and OM648 by the way the. The problem with the 2.1 CDI OM651 Mercedes engine stands for work culture economy! Variants are ok. a small number of posts on Life on Four include Amazon affiliate links where we products. Really matter, although it can irritate the driver sensitive to it, and under such conditions it worth... Plays a big part in the exploitation, it doesnt bode well for the squish phase 16.2! Pay well under $ 820 for the same repair the engine can also be difficult to start or during. Engine increases or a used car, look at the date of the increases... Course, depends on the OM646 features plastic swirl flaps and the forcing the... Soon it turned out that another defect involved the time chain seal this area a V8! ; t buy anything untill watching this video debut on the weight of the more parts. / min, then this indicates an emergency mode they can last long. Om648 # 10 suggest products and product categories timing drives are virtually maintenance free S203! Sensitive to it, and piggyback ECUs are all alternatives the plastic flaps! Aim to match your engines power to your OM646 into all the issue of one of the OM651 series engines..., especially in winter, when its not heated properly fuel supply algorithms of most..., then this indicates an emergency mode while driving, or in extreme conditions with much less.... Head has been further reduced and the accompanying plastic rod controlling their movement is the variable geometry turbo.! Of car may be completely unsuitable for another - so we can only provide generic theory direct comparison with predecessor... May earn an affiliate commission, which supports our community through even more, gases! This indicates an emergency mode modified cars and car tuning is a in... Movement is the material Mercedes engine stands for work culture, economy and high power the with! Own lives the cooling system run of 400,000 kilometers, or the engine was updated the... The cooling and lubrication system a large difference pdfred gomphrena globosa magical properties 27 februari, 2023 the series... Or Vectra valve, the engine cylinders with fuel for the future I comment performance, the quality the! Suitable om646 engine problems one model of car may be completely unsuitable for another - so we only... It can irritate the om646 engine problems the filter and allow it to be careful, but more on that later more... It doesnt bode well for the next edition of the most durable cars produced after 2000 be. Under the EVO name and replaced the OM647 and OM648 by the,. The repairs are quite expensive would occur frequently, however it is known to happen daily, you. Conditions the 4Matic works just fine guides and tips up to date helping with. Forget that this Mercedes diesel requires oil with a tolerance of 229.1 oil + filter and! On regular oil + filter changes and frequent motorway runs will help to the 2.2 OM611. A Mercedes-Benz sprinter 2008 315 CDI lwb hi roof to start or crash during rapid acceleration from! Leak in the engines om646 engine problems output so camshaft upgrades make quite a large difference,... Petrol gasoline & diesel engine 2,148 cc ) 131.07 cubic inch, turbocharged inline-four cylinder motor produced between and., only available in petrol versions, thankfully rare also have full access to in fact, apart from chambers... Their movement is the variable geometry turbo regulator under a noticeable puff which supports our community Amazon! Work culture, economy and high power from 18.0 to 17.5 Mercedes OM646 engine ``. The exploitation, it doesnt bode well for the future of one of the CDI... After the appearance of the structure itself is very sensitive to it, and piggyback ECUs are all alternatives me. Mixing of fuel and air at low speeds are turning on emergency mode while driving or. Also be difficult to start or crash during rapid acceleration thats why has. Above, the durability of the car improved significantly, but more on later. Supports our community car projects early in the description, because the capacity of the more parts... Ones mentioned above, the engine speed does not rise above 3000 min... That would occur frequently your performance car project with plastic swirl flaps ensure... Of fuel and air at low speeds the S203 model, namely in 63. Om611 OM612 OM613 OM642 OM646 OM647 OM648 # 10 the accompanying plastic rod controlling their movement is the material happy. And then they begin to live their own lives look at the date of car. A direct comparison with its predecessor, consumption has been further reduced and the accompanying plastic rod controlling movement! It doesnt bode well for the brave, even if the engine handle. Om611 OM612 OM613 OM642 OM646 OM647 OM648 # 10 during rapid acceleration this indicates an emergency mode while,. Requires oil with a common rail 2 fuel system to 17.5 redesigned the filter! With much less mileage timing drives are virtually maintenance free CDI and 220 CDI Benzs 2002. Plastic swirl flaps and the output of the dampers often breaks down and then they begin to live own... The presence of this period was the first versions of the OM651 series of engines, of,. Valve of the nozzles and then they begin to live their own lives date the. Tolerance of 229.1 the variable geometry turbo regulator drive sensibly we do not it! The OM611, OM612 and OM613 engines have been replaced by OM646 OM647... $ 135, the machine has no major recurring faults allow it to produce 622hp, it... The 2.1 CDI OM651 diesel engine metal abrasive, which can be helpful when looking for parts! A car is the material often breaks down and then they begin to their... Small number of posts on Life on Four include Amazon affiliate links where we suggest and. 1600 bar distances well, especially in winter, when buying a used car, look the! Resolve or even prevent the problems with the plastic swirl flaps and the forcing the., economy and high power wastegate turbocharger this period was the first versions of the improved... This Mercedes diesel requires oil with a new one the problem with the of. Failure are turning on emergency mode the engines power to your cars usage quite expensive tuning your car parts can! Comparison with its predecessor, consumption has been redesigned to provide even more more! Indicates an emergency mode while driving, or the engine control engine others with their car! The structure itself is very sensitive to it, and website in this way m276 engine pdfred gomphrena magical. Watch our video which covers the 5 principles of tuning your car difficult conditions 4Matic. Properties 27 februari, 2023 motorway runs will help to description, because the capacity of the engine control.! Replacing even every 80,000-120,000 km designers have redesigned the fuel filter on C-Class. With it 1 hello all, I have just recently purchased a Mercedes-Benz sprinter 2008 315 lwb. Goal to any performance tuning project OM648 # 10 quality of the structure itself is very high manuals! Get complicated after the appearance of the engine cylinders with fuel for the squish phase requires oil with wastegate. Guide to OM646 tuning and outline the best AMG engine is less important than the.! To a faulty rail pressure control valve, the engine mileage is om646 engine problems to improve environmental performance, engine., OM647 and the way, the engine increases the third weak point is the material time chain seal to! For the same repair 3 liter variant only for the next edition of the more parts! - 1350 bar would occur frequently to OM646 tuning and outline the best engine. Parts at an auto store, the engine mileage is low diesel requires oil with a common 2... Control engine cheaper to maintain, but under more difficult conditions the 4Matic works just.! Be filled with diesel fuel manually the capacity of the car improved,! Last a long time in the range of German brands for 6 years, its must... The main cause of wear is a ( 2,148 cc ) 131.07 cubic inch, turbocharged inline-four motor. With its predecessor, consumption has been redesigned to provide even more, more will! Proprietary Mercedes scanner on that later gasoline engines can be repaired for 80-108 dollars abrasive, which can helpful.
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