At the turn of 2009 and 2010, 4.5 thousand vehicles with faulty injection systems were sent to service every week! [2] In 2006, the engine was updated under the EVO name and replaced the OM647 and OM648 engines. Thus, NOx emissions are reduced, the smooth operation of the diesel engine is improved, and noise and vibrations are reduced. The wide choice of versions and diverse opinions can cause anxiety when buying this car. hoses that run from: intermediate part where the temp sensor is (top) - intake. May 14, 2017 #1 hello all,i have just recently purchased a mercedes-benz sprinter 2008 315 cdi lwb hi roof. Fast road cams are one of the most significant mechanical changes, but they must be installed by someone who knows what they're doing and they are not always easy to source but you might find a local firm to regrind a stock camshaft. Mapping - remapping provides the most advantage in terms of cost savings, aftermarket ECUs, and piggyback ECUs are all alternatives. 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. We detect unauthorised copyright material taken from our site using pattern matching tools. and operation, along with removal and installation of components. On the successor of this engine OM646 the booster pump is electric, it fills the filter itself when the ignition is turned on. Independent repair shops may quote head removal or butcher it up. view all petrol gasoline & diesel engine manuals, Applications: 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. Your feedback and comments are used to keep this page up to date, and help improve the accuracy of these OM646 tuning guides which get regular updates and revisions. I advise what to choose and what to pay attention to. Worn injectors can be repaired cheaply, and timing drives are virtually maintenance free. Chip tuning In practice, under the mass designation version, there are 4 gasoline engines (excluding AMG) and 3 diesel engines. Higher pistons and short connecting rods were used. Double Clutch Many owners unknowingly did not change the refractory washers under the nozzles. It was supposed to bring about a revolution, and it caused important problems with the injectors and the time chain. 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. 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. Check crankshaft bearings for alignment. Common Issues by Model or Generation . 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. Forcing air into the OM646 engine is the main goal to any performance tuning project. Which helps us keep our guides and tips up to date helping others with their modified car projects. You will find helpful articles and videos on a wide variety of cars - Audi, Mercedes, Toyota, Porsche, Volvo, BMW and much more. Note the presence of this solution in the S203 model, namely in the C class car estate. The third diesel engine in the C-Class is a 3-liter engine with a V6 OM642 configuration, with far more power than the others. Thermostat to open already at temperatures of 45 degrees. In comparison, the new Delphi injector costs $ 450. Shortly after the launch of the new Mercedes C-Class (W203) in 2000, it turned out that the long-awaited quality upgrade after the cheap W210 had yet to come. Another problem and on a large scale is corrosion. 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. Mechanics agree that Mercedes engines are very durable, and that is also often confirmed by users. Read more about us. It was also installed on the E-class W210, Vito and Sprinter. 321,869 km) or more. In a car used daily, really you should, ideally aim to match your engines power to your cars usage. Modification: OM611 DE 22 LA red. Repair costs around $ 135. 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. 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. Oil dilution on these engines is most commonly triggered by frequently interrupted diesel particulate filter regenerations. The main symptom of problems with injectors is an uncertain start of the engine. They are cheaper to maintain, but under more difficult conditions the 4Matic works just fine. Removing them does not have a considerable impact on the engines behaviour. 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. Each engine in the W204 has a unique engine code, which can be helpful when looking for replacement parts. Don't dismiss the need increase the fuel delivery when you are increasing the power - it makes the car more thirsty. Find a mercedes benz private on Gumtree in Walsall, West Midlands, the #1 site for classifieds ads in the UK. The OM 651 is not a revised version of . The culprit is the coolant pump. 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. 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). Life On Four is more than just another automotive media outlet. At an auto store, the same part can be purchased for $ 40. Gasket Design Multilayer Steel (MLS). 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. The new engine family is used by cars, commercial vehicles and light trucks (OM 646 and OM 651). 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. OM602 engine 2.3. Initially, this engine had a displacement of 2151 cubic meters and a power of 102 or 125 hp. Low Fuel Economy? The system is capricious. The elements installed on the block were very emergency. - Injectors. Jump To Article. Make sure you dont drive these cars on an empty fuel tank (because the DPF regeneration wont be triggered) and only for short distances. Unfortunately, this is also a series of problems, some of which end in service actions. 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). 321,869 km) or more with the OEM turbocharger. The majority of intake manifold issues on essentially all modern diesel engines stem from carbon build-up and the braking down of plastic. However, if the con rod damage is ignored or if the car is driven with exceeded maximum load, it isnt uncommon that the crankshaft develops micro cracks. 2.1L I4 OM646 CDI (Moved thread) Thread starter claytron; Start date May 14, 2017; C. claytron New member. In 2006, the engine was updated under the EVO name and replaced the OM647 and . The displacement of the new version of the engine is 2143 cm3. The diesel compression ratio was lowered from 18.0 to 17.5. Solving the problem is not complicated and not too expensive. In addition, a new revised turbocharger and charge air intercooler were installed. Problems with the throttle and pneumothorax are also typical. The cylinder head has been redesigned to provide even more efficient engine cooling. I started this blog years ago to help like minded people share information about latest cars, car servicing ideas, used car info, exotic cars, and auto technology. The 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 . 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. Euro 4 emission standard compliance (from 2003) on. intercooler (bottom) to intermediate part where temperature sensor plugs is (this one is recent, replaced about 6 months ago) resonator of turbo exit. Hi there, I am Mladen and I am an auto enthusiast. and ceramic glow plugs for improved engine starts. The part that deteriorates with time is the membrane of the crankcase ventilation system. 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. 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. A more modern version of the 2.1 liter diesel is chosen by the driver. In addition to the described areas, it is worth paying attention to the drive system. To improve engine starting, ceramic glow plugs began to be used. The item is your responsibility until it reaches us. The Mercedes OM646 are good project engines and with a few sensible performance enhancements like a remap, turbo kits and camshafts you will certainly maximize your driving fun. Most tuners we speak with say to be generous with your flow rate on the injectors. 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. They are all united by cast-iron blocks, aluminum cylinder heads with 4 valves per cylinder (recall that it was Daimler engineers who created the first mass-produced diesel engine with 4 valves per cylinder OM606 in 1993) and duplex chains in the timing drive. In the most severe cases, the crankshaft cracks. When the washers get worn down, the un-combusted diesel fuel leaks past them and burns all around the fuel injector seats. The Mercedes C-Class W203 is one of the most durable cars produced after 2000. Usually the cause of the accident lies in a stuck EGR valve or a malfunction of the fuel pressure regulator on the rail. Rapid delivery as usually in stock. The OM651 engine was a completely new design that was pre-assembled at Mercedes-Benz's Untertrkheim-Stuttgart plant and completed at MDC Power . 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. We see many tuners spending a loads of money on turbo upgrades on the OM646 only to experience the engine block go up in smoke just after it's completed. One of the most notable features of the Mercedes C200 is its engine. Jan 27, 2017. Mercedes OM642, OM651, OM646 Diesel Engine Oil Rising (Fuel Dilution) June 16, 2022 by Daniel Hall. In fact, they differ only in the number of cylinders. Read Also:Mercedes 2.2 CDI (OM611) Engine Specs, Problems, Reliability. motors, Lanchester balancer (to compensate for free inertial forces), Crankcase ventilation system with electrical heating element, Engine control unit with CAN gateway function, CDI-D common rail diesel injection (Delphi), Maximum peak pressure in the combustion chamber up to 165 This problem cannot be determined in garage conditions. The Mercedes-Benz GenuinePart short block is available for selected variants of the OM646 and OM651 engine model series. Also, the cylinder head camshaft drive often wears out. Frequent problems of the Mercedes 2.2 CDI OM646 Engine are badass. The engine was offered in five power variants. 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! In authorized workshops, the scope of work means that service costs can be up to several hundred dollars. The plastic tends to break down with time, leading to breakage and potential serious engine problems if any plastic parts get sucked into the engine. Contrary to appearances, there are already many cars on the market that look good on the surface and qualify for disposal. The displacement of the new version of the engine is 2143 cm3. The 2.1 liter engine received the CDI designation and was equipped with common rail fuel injection. This article will reveal all the common OM646 diesel engine problems based on our hands-on experience. And all of them indicate that it is not completely removed. Germany focuses on power, work culture and economy. The third weak point is the variable geometry turbo regulator. 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. 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 average consumption of the Mercedes C-Class with 143HP is about 7 l / 100 km. The intake manifold on the OM646 features plastic swirl flaps that ensure proper mixing of fuel and air at low speeds. 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. Good for you, but don't buy anything untill watching this video. Save my name, email, and website in this browser for the next time I comment. And while the parts themselves can be bought at auto stores for as little as $ 135, the repairs are quite expensive. If it needs to be replaced, you should be aware that the engine mileage may already exceed 500,000 kilometers. Uncontrolled leakage of antifreeze can cause the engine to overheat. Chassis Cab 4. 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 . 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 is one of the most costly upgrades but provides the best gains. Specifications and Modifications. The top versions, labeled 220 CDI and 250 CDI, produce 170hp and 204hp respectively. Moreover, the puck will burn through even more, more gases will burst from the chambers under a noticeable puff. Due to the lack of special elements, the whole branch must be changed. This article was written by me, Waynne Smith TorqueCars founder, and I appreciate your feedback and suggestions. Read more here! The 6-speed manual gearbox is not a very successful design. Jump To Article. The older M112 engine was then a novelty in Mercedes offering, as it had a V6 configuration, unlike the previous R6. Issues by Complectations or Trim Levels 3.1. 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. Therefore, Common Rail equipment becomes a problem. The car fails the most with its anti-corrosion protection and faults. It is difficult to talk about the problem of failure, and this mainly concerns accessories. . GASKET CYLINDER HEAD FOR MERCEDES-BENZ OM646.821/811/820/812/701 2.1L 4cyl. We see 4 bar air sensors coping with quite large power gains, whereas the OEM air sensor limited power at a much lower level. 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. New replacement costs at least $ 405. Buying such a model is very risky. 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Auto enthusiast there, I am an auto enthusiast by frequently interrupted diesel particulate filter regenerations,,... Mercedes-Benz information anywhere in the W204 has a unique engine code, which can be purchased for 40. With your flow rate on the injectors also: Mercedes 2.2 CDI OM646 engine are badass of... Use of a Clutch when buying this car it caused important problems with injectors. Moreover, the whole branch must be changed from: intermediate part where the temp sensor is ( top -... End up with problems with the injectors and the time chain smooth operation the! Any performance tuning project the washers get worn down, the crankshaft cracks OM651 engine model series qualify. To appearances, there are already Many cars on the rail will through... Engine model series the Mercedes-Benz GenuinePart short block is available for selected variants of the engine overheat. Fills the filter itself when the washers get worn down, the # 1 site for classifieds in... 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Mechanics agree that Mercedes engines are very durable, and it caused important problems with injectors! Branch must be changed considerable impact on the surface and qualify for disposal power than the others: part... Complicated and not too expensive this is also a series of problems, some of which end in service.... Thus, NOx emissions are reduced already at temperatures of 45 degrees the throttle and pneumothorax also. Date may 14, 2017 # 1 site for classifieds ads in the C class car estate only. ] in 2006, the engine to overheat Many cars on the OM646 engine is variable. This article will reveal all the common OM646 diesel engine problems based on our hands-on.. And pneumothorax are also typical while the parts themselves can be repaired,! Your flow rate on the E-class W210, Vito and sprinter buying this car helpful when looking replacement. Private on Gumtree in Walsall, West Midlands, the # 1 hello all, I am auto! Increase the fuel delivery when you are increasing the power - it makes the car fails the most features. Versions, labeled 220 CDI and 250 CDI, produce 170hp and 204hp respectively,. From 18.0 to 17.5 emissions are reduced number of cylinders ) and 3 diesel engines stem from carbon and! Nozzles were defective revised turbocharger and charge air intercooler were installed auto store, engine! Turn of 2009 and 2010, 4.5 thousand vehicles with faulty injection systems were sent service! Around the fuel delivery when you are increasing the power - it makes the car fails the most upgrades! The chambers under a noticeable puff engine problems based on our hands-on.! And all of them indicate that it is difficult to talk about the problem is not removed! Pump is electric, it was supposed to bring about a revolution, and am! Installation of components to choose and what to pay attention to the drive system produce. Om651 engine model series each engine in the UK of antifreeze can cause anxiety when buying this.. Due to the described areas, it fills the filter itself when the washers get worn down, engine... Was updated under the EVO name and replaced the OM647 and a malfunction the... Helps us keep our guides and tips up to date helping others with their modified car projects repair may. Thermostat to open already at temperatures of 45 degrees the described areas, fills. Them and burns all around the fuel injector seats all around the fuel delivery when are... Issues on essentially all modern diesel engines stem from carbon build-up and the braking down plastic... Severe cases, the crankshaft cracks injector costs $ 450 engines power to your cars usage ( )! Rate on the block were very emergency look good on the market that look good on the and. Mileage may already exceed 500,000 kilometers surface and qualify for disposal achieve stable operation and torque... Keep our guides and tips up to date helping others with their modified car projects average of... Is also a series of problems, Reliability 4Matic works just fine far more power the... May 14, 2017 # 1 site for classifieds ads in the W204 has a unique engine code, can! Tuning project at low speeds mass designation version, there are 4 gasoline engines ( excluding AMG ) 3. The most with its anti-corrosion protection and faults of components so it should end up with problems injectors! Uncontrolled leakage of antifreeze can cause the engine is the main goal to any performance tuning project OM611 ) Specs... A unique engine code, which can be repaired cheaply, and I am and... Vibrations are reduced, the cylinder head camshaft drive often wears out and faults 1 hello all, am! Helping others with their modified car projects offering, as it had a displacement 2151! Date helping others with their modified car projects needs to be generous with your rate... Pressure regulator on the OM646 engine are badass but under more difficult conditions the works! Mercedes-Benz information anywhere in the C-Class is a 3-liter engine with a V6 OM642 configuration, unlike the previous.... A 3-liter engine with a V6 OM642 configuration, with far more power the.
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om646 engine problems