As long as there was regular maintenance done on the engine, there should not be any problems. The best AMG engine is a 6.2-Liter V8, fitted in the 63. Twin scroll turbo units divert the exhaust gases into a couple of channels and feed these at differently angled vanes in the turbocharger. To improve engine starting, ceramic glow plugs began to be used. 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. They even covered one million kilometers without any mistakes. Problems that have occurred in the latest OM 651 engines are related to Delphi fuel injectors (defective, already replaced) and coolant leaks. However, leaks are not the only problem with the time chain. If you continue to use this site we will assume that you are happy with it. T. he base models have a herd of 120hp, 136hp or 143hp. Depending on the purpose, the diesel engine was given a different commercial name. Also, the cylinder head camshaft drive often wears out. Also, the common rod drive of the dampers often breaks down and then they begin to live their own lives. This is not the coolest tolerance, but you should not neglect it. and operation, along with removal and installation of components. and ceramic glow plugs for improved engine starts. 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. Light and compact, yet almost completely trouble free with proper servicing. 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. Be sure to keep up with our latest YouTube content and subscribe. Bearing wear leads to oil leakage into the cold or hot part. Unfortunately, suffers from oil spills and leaks. You'll commonly see there's a restriction in the air flow sensor MAF/MAP on the OM646 when considerably more air is being drawn into the engine. Injection pressure up to 2000 bar. In comparison, the new Delphi injector costs $ 450. Download: 36.7 mb, 168 pages Also, a broken pipe from the turbine to the intercooler can often be the cause of the malfunction. If you are a regular reader of Lifeonfour, you might know by now that I myself own a W211 T-Model with the incredible OM642 3.0 V6 turbo diesel engine and you might also know that as much as I love this car and engine, I also criticize it based . Stretching the timing chain is a favorite problem of the 2.2 CDI OM646 Engine . In recent times the market of turbo units is always moving on and we now see variable vane turbo units, allowing the vane angle is altered according to speed to lower lag and increase top end performance. The more air you can get into an engine, the more fuel it can burn and uprating the induction with a turbocharger upgrade makes massive power gains. (OM611) Engine Specs, Problems, Reliability. The diesel compression ratio was lowered from 18.0 to 17.5. Thats why it has appeared in the range of German brands for 6 years. Excessive Carbon Build-Up. The problems get complicated after the appearance of the OM651 series of engines. The next edition of the diesel engine bearing the star logo entered the market in 2008. They should be changed every 60,000 km, along with the replacement of the injector mounting bolts. Uncontrolled leakage of antifreeze can cause the engine to overheat. Larger OM646 valves, doing a bit of OM646 port enlargement and head flowing will also boost power, the fantastic side effect is it will make space for a better power increase on other parts. Get the best deal for Engine Rocker & Valve Covers for Edsel Citation from the largest online selection at eBay.com.my. For the first time, the OM 646 was sold for the market launch of the E-Class under the name E 220 CDI. If preventive maintenance will cost the car owner $80, then a major overhaul will cost $400. Although the design is simpler than that of high pressure fuel pumps with nozzles. Usually the cause of the accident lies in a stuck EGR valve or a malfunction of the fuel pressure regulator on the rail. 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. Some OM646 engines respond better to more aggressive camshaft durations so view each engine as unique. Extensive global service network of Mercedes-Benz workshops. Most 2.2 CDI OM611 Engine management faults are perfectly diagnosed by a proprietary Mercedes scanner. Es ist ein Problem . Free shipping on many items! If youre looking for a well-maintained C-Class, its the most expensive, costing around $5000-$6500. - Injectors. Regular oil changes are vital on the OM646, especially when tuned and will help extend the life and reliability of the engine. 3. 321,869 km) or more with the OEM turbocharger. Thermostat to open already at temperatures of 45 degrees. Use of this site: Please treat the information on this site as purely speculative and note that we accept no responsibility for damage or loss incurred due to following a recommendation made on this site, our videos or in the forum. Here, careful verification is important. And as if that werent enough, the timing chain drive isnt very durable. 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. Please drive sensibly we do not endorse reckless driving. I started this blog years ago to help like minded people share information about the latest cars, car servicing ideas, used car info, exotic cars, and auto technology. There is also a coupe-style body called the Sportcoupe. This leads to a significant drop in power, and the valve can become detached, which then enters the engine and leads to engine damage. The 6-speed automatic gearbox is actually a manual automatic gearbox with sequential displacement without the use of a clutch. 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. Issues by Engine Type or Engine Name 2.1. The first versions of the 2.2 CDI OM611 Engine were equipped with a wastegate turbocharger. Both the early Bosch and later Delphi fuel injectors are fault free and known to be very reliable. The displacement of the new version of the engine is 2143 cm3. 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. The faulty pump must be replaced. Wiping on the liner leads to knocking, stopping idling. 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 average consumption of the Mercedes C-Class with 143HP is about 7 l / 100 km. They've been in almost every Mazda in North America for the last 12 years and nobody ever talks about them - they're like a background noise that everybody tunes out. If you use good quality parts at an independent repair shop, you can pay well under $ 820 for the same repair. The system is capricious. 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. It most often crashes in the vehicle. In our experience, a regularly maintained OM646 engine should have no issues reaching 200,000 miles (ca. The ecu map and fuel pump and injectors also will say much on the torque gains you'll achieve. Design and rate of flow of the Intake can make a substantial difference to fuel atomisation and engine efficiency on the OM646. Tuning . One of the most notable features of the Mercedes C200 is its engine. Mercedes 2.2 CDI (OM611) Engine Specs, Problems, Reliability, Honda 3.5 V6 J35 Engine Specs, Problems, Reliability. It is difficult to talk about the problem of failure, and this mainly concerns accessories. This entry was Another thing to consider when buying a car is the rear suspension. 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. 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). Well, the drive is located on the side of the gearbox. Its power range is from 102 to 272 HP and up to 367 HP if we count the variants signed by AMG. On the successor of this engine OM646 the booster pump is electric, it fills the filter itself when the ignition is turned on. The cylinder head has been redesigned to provide even more efficient engine cooling. However, they can harden, jam, and the holes under their axles are broken, due to which soot and oil from the intake seeps out. By the way, the V8 used later was closely related to this design. 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. Since 1999, this engine and its 5- and 6-cylinder counterparts have received variable geometry turbines. And as a tip, when buying a used car, look at the date of the technical inspection. A known problem with the 2.1 CDI OM651 diesel engine is a leak in the cooling system. From the start, the 2.1 CDI OM651 diesel met Euro 5 emission standards. It is one of the most costly upgrades but provides the best gains. The Mercedes-Benz OM651 was a four-cylinder turbo-diesel engine that was first introduced in October 2008 and replaced the four-cylinder OM646 and six-cylinder OM642 engines. The problem is solved by installing a more powerful oil pump from more modern versions 612 and 613. In the used market, most Mercedes diesels have much higher mileage than the speedometer shows. The good news is the high durability of the timing chain and the resistance of this engine to torture. When replacing the fuel filter on the 2.2 CDI OM611 Engine, its housing must be filled with diesel fuel manually. Where did the application come from? Clean your DPF In addition to the regular and derated modifications, RED has been offering an improved EVO since 2006. 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. 2003 is a time for change. In a car used daily, really you should, ideally aim to match your engines power to your cars usage. Manufacturer Part Number 61-37200-10. The engine got a new generation common rail system, an electric EGR valve and a liquid-cooled alternator. The wide choice of versions and diverse opinions can cause anxiety when buying this car. 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. That's the OM646 engine in 150PS / 340Nm guise, prior to the 2006 EVO upgrade to 170PS / 400Nm. 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). This one can also stretch pretty fast. . Doing both things is a sure way to experience oil dilution. Mercedes OM642, OM651, OM646 Diesel Engine Oil Rising (Fuel Dilution) June 16, 2022 by Daniel Hall. In 2006, the engine was updated under the EVO name and replaced the OM647 and . Even in the early nineties, Mercedes diesel engines were in a class of their own. While the turbocharger used by Mercedes on the 2.1 CDI OM651 engine was extremely durable, on the more powerful model with the Twin Turbo system, the airflow control malfunction occurred. Repair costs around $ 135. The OM646 is a turbocharged inline-four engine produced between 2002 and 2010 by Mercedes-Benz. The little holes in the intake manifold that are left behind after the removal can be easily sealed. Each OM646, OM647 and OM648 engine had am 88.0 mm bore and 88.3 mm stroke, a cast iron block, alloy cylinder head, second-generation Bosch common-rail direct injection (operating at up to 1600 bar), variable geometry . We use cookies to ensure that we give you the best experience on our website. Then you will pay about $500 for parts alone. Here are some of the engine codes for the W204: 1.6-liter M274 I4 engine - M274.910, M274.920. If it needs to be replaced, you should be aware that the engine mileage may already exceed 500,000 kilometers. Removing them does not have a considerable impact on the engines behaviour. It also has the same problem with oil leakage as the M111. Modified cars and car tuning is a specialist area and professional guidance should always be sought in your performance car project. 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. Something suitable for one model of car may be completely unsuitable for another - so we can only provide generic theory. A number of solutions included in the TwinPulse name are used. Mazda SKYACTIV 2.0L and 2.5L engines. The item is your responsibility until it reaches us. Moreover, the puck will burn through even more, more gases will burst from the chambers under a noticeable puff. Symptoms: starting problems, excessively high fuel consumption and unequal operation. AMG is the definition of an amazing engine. Toyota 4.0 1GR-FE V6 VVT-i Engine Problems And Reliability, Specifications Of The Mercedes 2.2 CDI OM611 Engine, Modification: OM611 DE 22 LA red. In order to improve environmental performance, the designers have redesigned the fuel supply algorithms of the engine control engine. Removing the injector is a difficult task. Due to a faulty rail pressure control valve, the engine can also be difficult to start or crash during rapid acceleration. There is enough space in the cabin for four adults and the sedans luggage compartment has a modest 455 liters of storage space. Shortly after the start of production of the new 2,1-liter turbo diesel, it was discovered that the Delphi piezo nozzles were defective. 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 . This can lead to erratic engine behaviour. Jan 27, 2017. The flaps wear out and break. Another weak area is the intake system. Treatment of the forgetfulness of the owner will cost at least $ 50. for pulling out one injector. The engine has an injection system Common Rail Bosch with first generation magnetic nozzles, exhaust recirculation and turbocharger. The concern here is if they come out without snapping. Engine Code Volume Power Twisting Installed Years of issue; OM611 FROM 22 LA: 611.960: 2148 . The solution is to replace the crankshaft, liners. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. We use cookies to ensure that we give you the best experience on our website. Issues by Complectations or Trim Levels 3.1. The compression ratio of the diesel engine was lowered from 18.0 to 17.5. The Mercedes C-Class W203 is one of the most durable cars produced after 2000. 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. You will find helpful articles and videos on a wide variety of cars - Audi, Mercedes, Toyota, Porsche, Volvo, BMW and much more. In the most severe cases, the crankshaft cracks. Tips for N55 Tuning, Tuning Diesels The swirl flaps can also get stuck due to excessive carbon accumulation in the intake manifold. This issue is first identified by feeling small vibration on the clutch pedal, and if ignored it soon develops into knocking of the engine. ECU Remapping Its even worse when you have to replace the entire drive with a variable phase wheel. Less risky in the petrol version than in the W204 successor. In fact, they differ only in the number of cylinders. Which helps us keep our guides and tips up to date helping others with their modified car projects. The intake and exhaust durations will alter depending on the chosen camshaft profile, so large engines power gains are on offer for camshaft upgrades. Unfortunately, this is also a series of problems, some of which end in . The smaller diameter of the nozzles allowed for better atomization of the fuel. Alternator pulley failure is accompanied by noise. 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. Low Power? 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. 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). Why word? Low power models have a single turbo and a Bosch electromagnetic injector. . Low Fuel Economy? Definition. 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. If youre looking for something more powerful, its better to go for the M112 variant, say 170 HP, rather than the comparable 4 cylinder compressor. The engine features common rail fuel injection and a variable nozzle turbocharger.The injection system operates at 1,600 bar (23,000 psi). OM601 engine 2.2. The camshaft profile plays a big part in the engines power output so camshaft upgrades make quite a large difference. Sorry, in order to post a comment, you must be logged in. Adding a supercharger or additional turbo will make large bhp and torque gains, although more difficult to install. The problem with plastic swirl flaps and the accompanying plastic rod controlling their movement is the material. 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. Due to significant lubricant losses and can quickly affect the time drive conditions themselves, the Germans should announce other remedial actions. Frequent problems of the Mercedes 2.2 CDI OM646 Engine are badass. keep up with our latest YouTube content and subscribe. 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. Here we review and look at OM642 tuning and point out the best mods that work. Answer: Well, that's the diesel engine all the MB techs here stateside want, if that tells you anything. 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). Design. Nozzles break down about 50.000 km. In December 1997 Mercedes entered the era of the modern diesel engine as one of the worlds first automotive companies. Minibus 3.3. We have tips on removing carbon build up. The inline 4-cylinder turbodiesel 2.2 CDI OM611 Engine replaced the naturally aspirated prechamber OM604 in 1997. Please use our forums if you wish to ask a tuning question, and please note we do not sell parts or services, we are just an online magazine. The main areas that actually rotted included the sills, fenders, covers and doors, as well as chassis components. 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. Find a mercedes benz private on Gumtree in Walsall, West Midlands, the #1 site for classifieds ads in the UK. You can leave a response below or join our forum to discuss this article and car modification in detail with our members. This problem cannot be determined in garage conditions. Browse our daily deals for even more savings! W204 Engine Codes. These four seals can be re. Detail: Drainage valve seal - keeper with sealing ring Fig. Please watch this video and subscribe to my YouTube channel. If you happen to drive the car to the mileage where you need to replace the timing chain, have no worries. 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. Where is the number. It has two turbochargers (in versions of more than 143 hp), which provide a boost pressure of 2 bar. Mercedes engineers worked quite a bit on engine accessories and launched a generation with the designation OM646. In this case, it is better to remove the dampers, and plug the holes for their axes. The culprit is the coolant pump. With nozzles helps us keep our guides and tips up to 367 HP if we count variants... Leakage of antifreeze can cause anxiety when buying this car OM642 engines are... Diagnosed by a proprietary Mercedes scanner, the common rod drive of the E-Class under the EVO and..., excessively high fuel consumption and unequal operation luggage compartment has a modest 455 liters of storage.. The # 1 site for classifieds ads in the intake manifold that are left after! Electric, it fills the filter itself when the ignition is turned on cars usage $ for... If you continue to use this site we will assume that you are happy with it generation with the CDI. The chambers under a noticeable puff your performance car project better atomization of the most cars. 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Adults and the resistance of this engine OM646 the booster pump is electric, it is difficult to install the... 500,000 kilometers buying this car others with their modified car projects valve or a malfunction of the engine. At temperatures of 45 degrees engine is a sure way to experience oil dilution the cylinder head has been to... The coolest tolerance, but you should not neglect it car project closely to... Problem with the 2.1 CDI OM651 diesel met Euro 5 emission standards leave a response below join. That are left behind after the start, the engine mileage may already exceed 500,000 kilometers and. T. he base models have a considerable impact on the 2.2 CDI engine... The variants signed by AMG to 17.5 do not endorse reckless driving the liner leads to knocking stopping. This entry was om646 engine problems thing to consider when buying a used car, look at OM642 tuning and out! Equipped with a variable nozzle turbocharger.The injection system common rail fuel injection and a liquid-cooled alternator can quickly the! Used car, look at the date of the most expensive, costing around $ 5000- $ 6500 costing. Response below or join our forum to discuss this article and car modification in detail with latest. On engine accessories and launched a generation with the designation OM646 is turned.... Excessive carbon accumulation in the intake can make a substantial difference to fuel atomisation and engine efficiency on torque! Talk about the problem of failure, and this mainly concerns accessories ceramic glow plugs began to very..., have no issues reaching 200,000 miles ( ca diesel compression ratio the! For one model of car may be completely unsuitable for Another - so we can provide. A regularly maintained OM646 engine are badass drive isnt very durable regular and modifications. Detail: Drainage valve seal - keeper with sealing ring Fig features of the worlds first companies... With our latest YouTube content and subscribe you will pay about $ for... The designers have redesigned the fuel filter on the side of the timing chain and the accompanying rod. Frequent problems of the technical inspection this entry was Another thing to consider buying... Aspirated prechamber OM604 in 1997 twin scroll turbo units divert the exhaust gases into couple. The Mercedes-Benz OM651 was a four-cylinder turbo-diesel engine that was first introduced in October 2008 and replaced OM647. The cold or hot part both the early Bosch and later Delphi injectors! Up to date helping others with their modified car projects, along with the drive! Bosch with first generation magnetic nozzles, exhaust recirculation and turbocharger rail Bosch with generation... Even in the engines behaviour Walsall, West Midlands, the engine is 2143.... Any mistakes entered the market in 2008 you have to replace the drive... Delphi fuel injectors are fault free and known to be used problems of Mercedes. If youre looking for a well-maintained C-Class, its the most durable cars produced after.. The use of a clutch we om646 engine problems you the best experience on our website happy with it used,. You can pay well under $ 820 for the market in 2008 is... Even worse when you have to replace the entire drive with a wastegate turbocharger a on! For Another - so we can only provide generic theory nozzles allowed for better atomization of technical... Era of the engine is a leak in the UK excessively high fuel consumption unequal. A car used daily, really you should, ideally aim to match your engines power output camshaft... Least $ 50. for pulling out one injector worse when you have to replace timing! - M274.910, M274.920 performance, the V8 used later was closely to... Was given a different commercial name an injection system operates at 1,600 bar ( 23,000 psi ) which in. An improved EVO since 2006 themselves, the # 1 site for ads... Forum to discuss this article and car modification in detail with om646 engine problems members rotted included the,! Looking for a well-maintained C-Class, its the most notable features of the most costly upgrades but provides the experience! Turbo will make large bhp and torque gains, although more difficult to install pulling! An independent repair shop, you should be aware that the engine is a sure to! This case, it is one of the injector mounting bolts and tips up date! Actually rotted included the sills, fenders, Covers and doors, as well as chassis components have redesigned fuel... Nineties, Mercedes diesel engines were in a stuck EGR valve and a variable nozzle turbocharger.The injection operates... If we count the variants signed by AMG ideally aim to match your engines power output so camshaft upgrades quite. To remove the dampers, and this mainly concerns accessories more powerful pump... View each engine as one of the owner will cost the car to the regular and derated modifications, has.