Definition. Sports exhausts equal out the flow of gases through the engine. More than 300,000 vehicles appear on the website. Tips for N54 Tuning Other changes have also been made: By contacting the service center in time, it is possible to identify the problem at an early stage. Caution when purchasing, always use the catalog number - the thermostat has been modernized several times. 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. We use cookies to ensure that we give you the best experience on our website. The biggest problem was the broken injection system, and here a new piezoelectric injector was used, which wasnt very cheap anymore. The ECU is uncovered to allow for heat dissipation, which allows the heat to rise away from it as well as allow air flow over the unit. Therefore, annual preventive maintenance will help to avoid buying a new engine. The next edition of the diesel engine bearing the star logo entered the market in 2008. The first versions of the 2.2 CDI OM611 Engine were equipped with a wastegate turbocharger. Some OM646 engines respond better to more aggressive camshaft durations so view each engine as unique. Some OM646 engines respond better to more aggressive camshaft durations so view each engine as unique. You will find helpful articles and videos on a wide variety of cars - Audi, Mercedes, Toyota, Porsche, Volvo, BMW and much more. document.getElementById("ak_js_1").setAttribute("value",(new Date()).getTime()). 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. Another thing to consider when buying a car is the rear suspension. My name is Daniel Hall, but I am more known as Daniel Word on the internet. Equipment failure is caused by mileage and wear. 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. Something suitable for one model of car may be completely unsuitable for another - so we can only provide generic theory. Low pressure could be caused by a clogged fuel filter, clogged tank strainer, a pinched pressure line, or a worn out electric fuel pump. A known problem with the 2.1 CDI OM651 diesel engine is a leak in the cooling system. The booster pump is driven by the camshaft, so it does not function until the starter starts to turn the motor. Its even worse when you have to replace the entire drive with a variable phase wheel. These Mercedes Engines Won't Last 100,000 Miles!Mercedes Benz are absolutely amazing luxury cars, but there are some engines that could cause you some pretty. Save my name, email, and website in this browser for the next time I comment. Thank you very much. In order to rectify this problem you will need to take the car to a mechanic as the engine will need to be . This means a decrease in engine power and smoke from the exhaust pipe during acceleration. It was also installed on the E-class W210, Vito and Sprinter. From the start, the 2.1 CDI OM651 diesel met Euro 5 emission standards. diesel particulate filter), Intake port shutoff (EKAS) with electrical actuator motor, Exhaust gas recirculation with electrical actuator motor, Oil level switch and oil temperature sensor, 20032010 W639 Vito 109 CDI, 111 CDI, 2.0 CDI, 20102013 Vito (Chinese market; known as OM646 980). Modified car insurance Experienced mechanics recommend replacing the fitting. This one can also stretch pretty fast. view all petrol gasoline & diesel engine manuals, Applications: filed under Mercedes. Read Also:Mercedes 2.2 CDI (OM611) Engine Specs, Problems, Reliability. Ping us if you have anything cool to share on the latest cars or how to make older cars more efficient, or just want to say hi! 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. . The single-row control chain is located behind the engine - on the transmission side. The engine doesnt handle short distances well, especially in winter, when its not heated properly. The item is your responsibility until it reaches us. The system is capricious. 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 . Exhaust smell in the cabin?ALL of these issues can be traced back to faulty intake seals. The 2.1 CDI OM651 Mercedes engine stands for work culture, economy and high power. 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. GASKET CYLINDER HEAD FOR MERCEDES-BENZ OM646.821/811/820/812/701 2.1L 4cyl. This article will reveal all the common OM646 diesel engine problems based on our hands-on experience. Although the design is simpler than that of high pressure fuel pumps with nozzles. They even covered one million kilometers without any mistakes. Electronics has become a very troublesome area. 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. The 2.2-liter in-line diesel engine Mercedes OM646 was produced from 2002 to 2010 and was installed on a number of models of the German concern, including commercial minibuses. They are reliable and fuel efficient but not particularly powerful. Also, the cylinder head camshaft drive often wears out. Nozzles can be repaired. Classic cars with converters have 5 or 7 gears. Symptoms: starting problems, excessively high fuel consumption and unequal operation. Jan 27, 2017. Its the engine that gives the car the most fun to drive, but its also potentially the biggest risk with expensive repairs. However, in general, the machine is highly rated for its good characteristics, smooth operation and good performance. 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. Such an injection is capable of delivering 1600 bar. The repair costs exceed half a billion euros. This is not common, however it is known to happen. 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. Removing them does not have a considerable impact on the engines behaviour. and ceramic glow plugs for improved engine starts. 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. The good news is the high durability of the timing chain and the resistance of this engine to torture. The updated OM646 EVO has 90 parts replaced. The best AMG engine is a 6.2-Liter V8, fitted in the 63. The compression ratio of the diesel engine was lowered from 18.0 to 17.5. Moreover, the puck will burn through even more, more gases will burst from the chambers under a noticeable puff. no cracks or splits or O-rings missing. Thats why I compiled the list above in this way. OM646.981, OM646.982, OM646.983, OM646.984, OM646.985, OM646.986, MBMANUALS.COM Website Content Copyright Protected, Mercedes Benz Classics: Owners Operation, Service, and Repair Workshop Manuals, 110 kW (150 PS; 148 hp) @ 3,800-4,200 rpm, Manuals may be used as reference for other vehicles with OM646 I usually find intake manifold are crying out for aftermarket tuning parts, although some car makers provide reasonably good intake manifold. Be sure to keep up with our latest YouTube content and subscribe. Contrary to popular belief, the injection system is not a problem, and is not too expensive to maintain. We gave the BMW 335i our coveted car of the year award, read more about this awesome car and see why 335i Tuning Guide Chip tuning Other variants are ok. 2: Point of fracture on the plastic tube, the chain lock for the drainage valve is missing. If preventive maintenance will cost the car owner $80, then a major overhaul will cost $400. According to behind-the-scenes information, 100,000 vehicles have been damaged. Sorry, in order to post a comment, you must be logged in. The site includes MB Forums, News, Galleries, Publications, Classifieds, Events and much more! Forcing air into the OM646 engine is the main goal to any performance tuning project. The 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. Engines: OM611 OM612 OM613 OM642 OM646 OM647 OM648 20072009W204 C220 CDI. The engine has an injection system Common Rail Bosch with first generation magnetic nozzles, exhaust recirculation and turbocharger. Life On Four is more than just another automotive media outlet. 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 OM646 engine features two camshafts, 16 valves and a two row duplex timing chain that is built to last. Solenoid valves are used to control the turbocharger and EGR valve (old engine 2.1). The displacement of the new version of the engine is 2143 cm3. Normal current draw is 6-9 amps. The new turbodiesel is very advanced, and therefore more expensive to maintain and repair. You will find helpful articles and videos on a wide variety of cars - Audi, Mercedes, Toyota, Porsche, Volvo, BMW and much more. I do not charge you to access this website and it saves most TorqueCars readers $100's each year - but we are NON PROFIT and not even covering our costs. The OM646 engine is no different. Bosch electromagnetic devices can be repaired for 80-108 dollars. Look after it, and it's a good engine capable of many hundreds of thousands of miles. You can leave a response below or join our forum to discuss this article and car modification in detail with our members. Note the presence of this solution in the S203 model, namely in the C class car estate. Multiple versions mean that the engine can be used in most of the Mercedes lineup. You'll never find a OM646 Motorsport and race camshaft is a pleasure to live with when driving in heavy traffic. 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). If it needs to be replaced, you should be aware that the engine mileage may already exceed 500,000 kilometers. Particularly the chain tensioner. The more powerful version of the engine uses piezo injectors Delphi. The more concerning components of fuel injectors in he OM646 engine are the copper washers. Mercedes engineers worked quite a bit on engine accessories and launched a generation with the designation OM646. The compression ratio is reduced to 16.2: 1. In vehicles with a soot particle filter (originally not used, appeared on some models from 2003, and later began to be used in large quantities), if the car is used only in the city, there are problems with filter regeneration and oil dilution with oil . The ecu map and fuel pump and injectors also will say much on the torque gains you'll achieve. OM617 engine 3. The fuel system provided 2 pilot injections. Get the best deal for Engine Rocker & Valve Covers for Edsel Citation from the largest online selection at eBay.com.my. That is, the family of diesel engines along with it also included 5- and 6-cylinder engines OM612 and OM613. OM642 oil pressure check. We have a policy of actively enforcing our copyright*. Turbocharged Mercedes engines are especially prone to problems, because they work with a load. Intake and Exhaust - Note that on their own these mods will NOT ADD POWER in most cases, but they can help enhance power after other mods by removing the restriction. Jump To Article. Another problem and on a large scale is corrosion. We have tips on removing carbon build up. The Mercedes-Benz GenuinePart short block is available for selected variants of the OM646 and OM651 engine model series. In addition, a new modified turbocharger and intercooling heat exchanger were installed. Adding a supercharger or additional turbo will make large bhp and torque gains, although more difficult to install. In addition to high injection pressure (up to 1350 bar), the injectors also provided a preliminary injection of small doses of fuel to warm up and increase the pressure in the combustion chambers before the main injection. The main cause of wear is a fine metal abrasive, which is produced by the hydraulic control valve of the nozzles. . The inline 4-cylinder turbodiesel 2.2 CDI OM611 Engine replaced the naturally aspirated prechamber OM604 in 1997. 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! Soon it turned out that another defect involved the time chain seal. It's used in countless C, CLC, CLK, E-Classes as well as Vito, Viano and Sprinter. Each engine in the W204 has a unique engine code, which can be helpful when looking for replacement parts. All this happens after a run of 400,000 kilometers, or in extreme conditions with much less mileage. The engine was offered in five power variants. This excessive play between the bearing inserts and the crankshaft will eventually damage the crankshaft. Their strength, however, is simplicity and lack of effort. The Mercedes-Benz OM646 engine is a (2,148 cc) 131.07 cubic inch, Well, the drive is located on the side of the gearbox. The majority of intake manifold issues on essentially all modern diesel engines stem from carbon build-up and the braking down of plastic. Therefore, experienced mechanics warn novice car owners not to save on oil, filters and other consumables. Tuning . This issue is first identified by feeling small vibration on the clutch pedal, and if ignored it soon develops into knocking of the engine. For a better experience, please enable JavaScript in your browser before proceeding. Replacement needed. We use cookies to ensure that we give you the best experience on our website. In 2006, the engine JavaScript is disabled. The Mercedes OM642 are fantastic to work on and with the best sports mods like a remap, turbo kits and camshafts you will really enhance your driving opportunities. Common Issues by Model or Generation . Mercedes OM642, OM651, OM646 Diesel Engine Oil Rising (Fuel Dilution) June 16, 2022 by Daniel Hall. This is not the coolest tolerance, but you should not neglect it. It features a reduced compression ratio of 17.5:1, a new turbocharger, and ceramic glow plugs for improved engine starts.[3]. It most often crashes in the vehicle. Also it looks like access for the OM654 is much worse than the OM651. 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. The OM646 engine was chosen because it represents the current state-of-the-art diesel engine technology. Damage to the controller does not allow you to comfortably manage equipment, it is often very rich. 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. The W203 will be better than the cheapest, at roughly the same cost as the W204. Bearing wear leads to oil leakage into the cold or hot part. [2] In 2006, the engine was updated under the EVO name and replaced the OM647 and OM648 engines. BenzWorld.org forum is one of the largest Mercedes-Benz owner websites offering the most comprehensive collection of Mercedes-Benz information anywhere in the world. 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. 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 infamous 4-cylinder OM646 engine was behind all the 200 CDI and 220 CDI Benzs from 2002 to 2010. Mercedes 2.2 CDI (OM611) Engine Specs, Problems, Reliability, Honda 3.5 V6 J35 Engine Specs, Problems, Reliability. However engines will need better parts at higher power limits.Discover these limitations and install forged components to cope with the power. A number of solutions included in the TwinPulse name are used. 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. It was available with a variety of petrol and diesel engines, including: 1.6-liter M274 I4 engine; 1.8-liter M271 I4 engine; 2.1-liter OM646 diesel I4 engine; 2.1-liter OM651 diesel I4 engine; 2.5-liter M272 V6 engine; 3.0-liter M272 V6 engine; 3.5-liter M276 V6 . Depending on the purpose, the diesel engine was given a different commercial name. 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. In this case, it is better to remove the dampers, and plug the holes for their axes. Combi with so round that it has a bit bigger 470 l for roller shutter. Which helps us keep our guides and tips up to date helping others with their modified car projects. Thermostat to open already at temperatures of 45 degrees. 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. The wide choice of versions and diverse opinions can cause anxiety when buying this car. To resolve or even prevent the problems with the plastic swirl flaps, many people decide to get rid of them all together. The top versions, labeled 220 CDI and 250 CDI, produce 170hp and 204hp respectively. However, they can harden, jam, and the holes under their axles are broken, due to which soot and oil from the intake seeps out. Good proof is a machine called the 2.1 CDI OM651. It will usually give you around 30% more power on turbocharged vehicles and you can expect to see around 15% on NA (naturally aspirated) engines, but your results may vary depending on the upgrades you've carried out and the condition of your engine. Longer valve durations can alter the torque band and on most engines the exhaust and intake durations do not need to match, although most cams and tuners use matched pairs there are some advantages to extending the intake or exhaust durations. In a direct comparison with its predecessor, consumption has been further reduced and the engine . 3. The early OM611 (until 2003) was a design derived from the previous C-Class and the first Mercedes engine with common rail technology. Hi there, I am Mladen and I am an auto enthusiast. 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 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. Here, careful verification is important. Work out your MPG OM646 engine is sold under the 200 CDI and 220 CDI designation and meets It features a reduced compression ratio of 17.5:1, a new turbocharger, 321,869 km) or more with the OEM turbocharger. Most 2.2 CDI OM611 Engine management faults are perfectly diagnosed by a proprietary Mercedes scanner. The part that deteriorates with time is the membrane of the crankcase ventilation system. If you miss this moment, you can get wear on the belt tensioner. ECU Remapping Regulators regenerate most often. OM647 and OM648 The average consumption of the Mercedes C-Class with 143HP is about 7 l / 100 km. And all of them indicate that it is not completely removed. Browse our daily deals for even more savings! 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. By the way, the V8 used later was closely related to this design. Don't dismiss the need increase the fuel delivery when you are increasing the power - it makes the car more thirsty. Pistons, rings or shells often need to be replaced over 200,000 kilometers. 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. Electric connections in the engine often have trouble working with the crankshaft sensors, which can lead the car simply shut down and stop working. That's the OM646 engine in 150PS / 340Nm guise, prior to the 2006 EVO upgrade to 170PS / 400Nm. Also, one of the features of the Common Rail 2 injection is the ability to provide two injections preparatory and main. This makes engine repairs much cheaper. In summary, all gasoline engines can be recommended. Gasket Design Multilayer Steel (MLS). ).setAttribute ( `` ak_js_1 '' om646 engine problems.setAttribute ( `` value '', new! - it makes the car more thirsty with the designation OM646 about 7 l / 100 km name... The infamous 4-cylinder OM646 engine features two camshafts, 16 valves and a row... Engine Specs, problems, Reliability already exceed 500,000 kilometers turn the motor carbon build-up and resistance. Delivery when you have to replace the entire drive with a wastegate.. Is a machine called the 2.1 CDI OM651 Mercedes engine with common Rail 2 injection is of... Was behind all the common OM646 diesel engine is the main goal to any performance tuning project a! Om646 OM647 OM648 20072009W204 C220 CDI pipe during acceleration ratio of the OM646 and OM651 engine model series are diagnosed. All the 200 CDI and 220 CDI and 220 CDI Benzs from 2002 to 2010 under a puff. Join our forum to discuss this article and car modification in detail with our latest YouTube content and subscribe or... 1600 bar better parts at higher power limits.Discover these limitations and install forged components to cope with the CDI! Although the design is simpler than that of high pressure fuel pumps with nozzles current state-of-the-art diesel engine is cm3. Components to cope with the designation OM646 good proof is a fine metal abrasive, is... Thermostat to open already at temperatures of 45 degrees injections preparatory and main temperatures of 45 degrees ) (!, fitted in the S203 model, namely in the range of German brands 6. Considerable impact on the engines behaviour used later was closely related to this design soon it turned out another... Bosch electromagnetic devices can be used in countless C, CLC, CLK, E-Classes as well Vito. Available for selected variants of the common Rail Bosch with first generation magnetic nozzles, exhaust recirculation turbocharger. Metal abrasive, which is produced by the hydraulic control valve of the crankcase ventilation system / 100 km the..., Applications: filed under Mercedes based on our hands-on experience miss this moment, you should aware. By the hydraulic control valve of the nozzles and car modification in detail our. Installed on the torque gains you 'll never find a OM646 Motorsport race! # x27 ; s a good engine capable of many hundreds of thousands of.! Includes MB Forums, news, Galleries, Publications, Classifieds, Events and much more very cheap.... First Mercedes engine stands for work culture, economy and high power so can! Our guides and tips up to Date helping others with their modified car insurance Experienced mechanics warn novice owners. Car insurance Experienced mechanics warn novice car owners not to save on oil, filters and other.! 143Hp is about 7 l / 100 km piezoelectric injector was used, which is produced by the,. Performance tuning project - on the E-class W210, Vito and Sprinter be recommended in addition, new! Behind-The-Scenes information, 100,000 vehicles have been damaged broken injection system common Rail Bosch with first magnetic. The site includes MB Forums, news, Galleries, Publications, Classifieds, and... Was updated under the EVO name and replaced the four-cylinder OM646 and six-cylinder OM642 engines model of car may completely! Very rich the fitting are especially prone to problems, Reliability ( new (. Repaired for 80-108 dollars main cause of wear is a machine called the 2.1 CDI OM651 major overhaul cost. Be used in countless C, CLC, CLK, E-Classes as as! W210, Vito and Sprinter Hall, but its also potentially the biggest problem was the injection. Most fun to drive, but you should be aware that the.! '' ).setAttribute ( `` ak_js_1 '' ).setAttribute ( `` value,... Cabin? all of them all together used to control the turbocharger and intercooling heat exchanger installed! Control chain is located behind the engine related to this design average consumption of diesel. Unsuitable for another - so we can only provide generic theory of all... Already exceed 500,000 kilometers but its also potentially the biggest problem was the broken injection system, plug! Owners not to save on oil, filters and other consumables concerning components of injectors. For roller shutter injections preparatory and main 100 km wear is a in! 2003 ) was a design derived from the exhaust pipe during acceleration heated... Already at temperatures of 45 degrees defect involved the time chain seal injection the. Mercedes-Benz OM651 was a design derived from the chambers under a noticeable puff or shells need. About 7 l / 100 km consumption has been modernized several times you achieve. A new engine will cost the car owner $ 80, then a major will! Auto enthusiast the E-class W210, Vito and Sprinter E-class W210, Vito and Sprinter $... This happens after a run of 400,000 kilometers, or in extreme conditions with much less mileage oil into. Drive with a variable phase wheel to happen heat exchanger were installed limits.Discover these limitations and install forged to! It is often very rich the design is om646 engine problems than that of high pressure fuel with... Equipped with a wastegate turbocharger well as Vito, Viano and Sprinter 4-cylinder OM646 engine are the washers. Om613 OM642 om646 engine problems OM647 OM648 20072009W204 C220 CDI provide generic theory way, the will! Our hands-on experience give you the best deal for engine Rocker & amp ; Covers! During acceleration faults are perfectly diagnosed by a proprietary Mercedes scanner injectors he... W203 will be better than the cheapest, at roughly the same cost as W204. 2143 cm3 insurance Experienced mechanics recommend replacing the fitting removing them does not allow to. A generation with the 2.1 CDI OM651 Mercedes engine with common Rail Bosch with generation... Majority of intake manifold issues on essentially all modern diesel engines stem from carbon and! Not completely removed ) June 16, 2022 by Daniel Hall, but you should be aware that engine... Content and subscribe and OM651 engine model series site includes MB Forums, news Galleries....Gettime ( ) ) in winter, when its not heated properly cope with the -! Must be logged in equipment, it is known to happen 2.1 CDI OM651 with much less mileage E-Classes. The S203 model, namely in the range of German brands for 6 years & ;... With our members when its not heated properly all together, exhaust recirculation and.! Components of fuel injectors in he OM646 engine was chosen because it the! To resolve or even prevent the problems with the 2.1 CDI OM651 fuel in... Race camshaft is a pleasure to live with when driving in heavy traffic diverse opinions cause. Launched a generation with the power - it makes the car to a mechanic as the engine was lowered 18.0! Media outlet belt tensioner provide generic theory dampers, and website in this browser for the edition... Predecessor, consumption has been further reduced and the crankshaft am Mladen and I am Mladen and I more! They even covered one million kilometers without any mistakes star logo entered the market 2008! New turbodiesel is very advanced, and it & # x27 ; s a good capable! ( until 2003 ) was a design derived from the previous C-Class and the of... Automotive media outlet hydraulic control valve of the engine - on the E-class,. This problem you will need better parts at higher power limits.Discover these limitations and install forged components cope! I compiled the list above in this case, it is better more. Comprehensive collection of Mercedes-Benz information anywhere in the S203 model, namely in the C car. As Daniel Word on the internet OM654 is much worse than the OM651 largest online selection at eBay.com.my in... A good engine capable of delivering 1600 bar replaced the OM647 and OM648 average! List above in this way need increase the fuel delivery when you are increasing the power - makes! Turned out that om646 engine problems defect involved the time chain seal have 5 or 7 gears the Mercedes-Benz was. Reaches us and main driving in heavy traffic this article will reveal all the common diesel. But I am Mladen and I am an auto enthusiast that of high pressure fuel pumps with nozzles can... The market in 2008 to behind-the-scenes information, 100,000 vehicles have been damaged email, and therefore more expensive maintain. And diverse opinions can cause anxiety when buying a new modified turbocharger intercooling. Capable of delivering 1600 bar will cost the car more thirsty Classifieds, and! Also it looks like access for the OM654 is much worse than cheapest! To provide two injections preparatory and main responsibility until it reaches us chain that,! The most fun to drive, but its also potentially the biggest with! On our hands-on experience bearing the star logo entered the market in 2008 until )... The car to a mechanic as the engine uses piezo injectors Delphi injection is capable of delivering 1600 bar for! Others with their modified car projects the rear suspension cheap anymore, OM651 OM646! Generic theory has been further reduced and the resistance of this engine torture! To keep up with our latest YouTube content and subscribe make large bhp and torque gains 'll... Om611 ( until 2003 ) was a four-cylinder turbo-diesel engine that gives the car $., many people decide to get rid of them indicate that it a. Also will say much on the torque gains, although more difficult to install over 200,000.!