Quite often there are error messages that are difficult to verify (especially on diesel engines). . 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. Chip tuning Higher pistons and shorter connecting rods were used. In our experience, a regularly maintained OM646 engine should have no issues reaching 200,000 miles (ca. The updated OM646 EVO has 90 parts replaced. 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. It is worth noting that such a nuisance occurs mainly on Sprinter engines, and many of the same engines from Mercedes cars did not encounter such a problem (in fairness, we note that OM611 passenger cars also experience sticking of the main liners and jamming). 2 and 3 connecting rods are deformed, liners wear out. The OM646 is a turbocharged inline-four engine produced between 2002 and 2010 by Mercedes-Benz. Minibus 3.3. 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. Plunger pairs are very tenacious, but wear can be observed on the injection pump shaft, more precisely on the eccentric cam. If you continue to use this site we will assume that you are happy with it. OM642 oil pressure check. Low Fuel Economy? The 6-speed manual gearbox is not a very successful design. 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. Due to significant lubricant losses and can quickly affect the time drive conditions themselves, the Germans should announce other remedial actions. The flaps wear out and break. The top versions, labeled 220 CDI and 250 CDI, produce 170hp and 204hp respectively. Hi there, I am Mladen and I am an auto enthusiast. document.getElementById("ak_js_1").setAttribute("value",(new Date()).getTime()). It is properly designed and meets all the expectations you might have for such a model. The 2.1 CDI OM651 Mercedes engine stands for work culture, economy and high power. The problem with plastic swirl flaps and the accompanying plastic rod controlling their movement is the material. Adding a supercharger or additional turbo will make large bhp and torque gains, although more difficult to install. Also, one of the features of the Common Rail 2 injection is the ability to provide two injections preparatory and main. The OM646 engine is sold under the 200 CDI and 220 CDI designation and meets Euro 4 emission standard compliance (from 2003) on. Its even worse when you have to replace the entire drive with a variable phase wheel. The repair costs exceed half a billion euros. If you continue to use this site we will assume that you are happy with it. The OM646 is a turbocharged inline-four engine produced between 2002 and 2010 by Mercedes-Benz. 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. 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 . mercedes m276 engine pdfred gomphrena globosa magical properties 27 februari, 2023 . In summary, all gasoline engines can be recommended. The best AMG engine is a 6.2-Liter V8, fitted in the 63. Also, a broken pipe from the turbine to the intercooler can often be the cause of the malfunction. It is one of the most costly upgrades but provides the best gains. They are reliable and fuel efficient but not particularly powerful. The damage can also be brought upon crankshaft with oil dilution issues. It depends on the approach to the car. Manufacturer Part Number 006.750. 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. 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 . It features a reduced compression ratio of 17.5:1, a new turbocharger, Particle filter accessories arent the most durable either. My name is Daniel Hall, but I am more known as Daniel Word on the internet. Tips for N54 Tuning . By the way, the quality of the car improved significantly, but more on that later. It most often crashes in the vehicle. This model offers some pretty outdated but good basic techniques, namely the drivetrain and suspension. 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. 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. It becomes noisy, and a delay in return can speed up the wear of the belt buckle. Glow plugs need to be unscrewed at least once every 50,000 km, changed and put on thermal paste. Another problem and on a large scale is corrosion. We strive to provide the internet with information that will ease your purchase of a new or a used car. The OM 651 is not a revised version of . Join our forum today and benefit from over 300,000 posts on tuning 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. Specifications Of The Mercedes 2.2 CDI OM611 Engine. Extensive global service network of Mercedes-Benz workshops. In addition, a new modified turbocharger and intercooling heat exchanger were installed. Another thing to consider when buying a car is the rear suspension. According to many Mercedes mechanics, this eventually leads to oil starvation of the main crankshaft bearing, which leads to more serious engine issues. The In rare cases, the OM646 was known to suffer from worn out balancer shaft bearings. If you use good quality parts at an independent repair shop, you can pay well under $ 820 for the same repair. In December 1997 Mercedes entered the era of the modern diesel engine as one of the worlds first automotive companies. Limp Mode? The inline 4-cylinder turbodiesel 2.2 CDI OM611 Engine replaced the naturally aspirated prechamber OM604 in 1997. If you read our review of the OM651 engine problems, youll also see its a fantastic engine, but the OM646 is still more durable and reliable. The camshaft profile plays a big part in the engines power output so camshaft upgrades make quite a large difference. The second diesel engine is a 5-cylinder, 2.7 liter cult engine (OM612). Nozzles break down about 50.000 km. Read more about us. It also has the same problem with oil leakage as the M111. This article will reveal all the common OM646 diesel engine problems based on our hands-on experience. In addition, a new revised turbocharger and charge air intercooler were installed. The summary of the corrective action is terrifying. Chain as a drive reduces maintenance costs. Despite the fact that the engine from the Mercedes 2.2 CDI OM646 Engine is made by the Germans to the conscience, it requires care. Many owners unknowingly did not change the refractory washers under the nozzles. I usually find intake manifold are crying out for aftermarket tuning parts, although some car makers provide reasonably good 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. General description. Its dimensions are similar to competitors, namely Audi and BMW, so it is smaller than Mondeo or Vectra. Regulators regenerate most often. Solved by installing a new pulley. (All car owners of all ages and from all countries are welcome). 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. Tee in a gauge and check the pressure during cranking, it should be 55-65 psi steady. Any small excerpts and quotes copied must be accompanied by a link to the source material. At least have to be careful, but also because of the more expensive parts, I do not recommend it. The diesel compression ratio was lowered from 18.0 to 17.5. Contrary to popular belief, the injection system is not a problem, and is not too expensive to maintain. 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). Excessive Carbon Build-Up. Since a special stand is required. Mercedes dealers have the . Mercedes, unfortunately, did not recommend it at first, but changed his mind in the following years. As these cars reach high mileage, they can start leaking or causing other problems which results in uneven idling, twitching at startup and more. view all petrol gasoline & diesel engine manuals, Applications: feature on twinchargers if you want to read more. Mercedes engineers worked quite a bit on engine accessories and launched a generation with the designation OM646. Here, careful verification is important. Unfortunately, suffers from oil spills and leaks. On the successor of this engine - OM646 - the booster pump is electric, it fills the filter itself when the ignition is turned on. The next edition of the diesel engine bearing the star logo entered the market in 2008. Something suitable for one model of car may be completely unsuitable for another - so we can only provide generic theory. One of the hallmarks of cars of this period was the high-tech multi-link suspension. The Mercedes-Benz OM646, OM647 and OM648 were a family of diesel engines with four, five and six cylinders, respectively, which replaced the OM611, OM612 and OM613 engines. Solving the problem is not complicated and not too expensive. The test is a replacement for the OM602A test but with more severe requirements. Plastic painting tips for car interior and exterior.Read more Tuning the 150bhp Diesel Astra Sport HatchRead more MPG calculator UK miles per Gallon calculate MPGRead more / UK Modifying & Tuning / Car Mods Goodbye, 2000 - 2023 Content of this site: pages may not be substantially or wholly copied without our prior written agreement. Please help us improve these tips by sending us your feedback in the comments box below. turbine geometry) stage 3, Intake air throttling via the throttle valve actuator (only A common malfunction is the absence of a turn signal or light at all, as well as the wiper. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. Remapping Diesels Worn injectors can be repaired cheaply, and timing drives are virtually maintenance free. Read more here! Electronics has become a very troublesome area. They also improve the scavenging effect of the engine. The original cost over $ 80. The smaller diameter of the nozzles allowed for better atomization of the fuel. 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. Entdecke KATALYSATOR MERCEDES C-KLASSE MK3 (W204) 2007-2014 2148 OM646.811 DPF Kat in groer Auswahl Vergleichen Angebote und Preise Online kaufen bei eBay Kostenlose Lieferung fr viele Artikel! Such improvements enabled it to produce 622hp, making it the highest horsepower engine at . keep up with our latest YouTube content and subscribe. If the washer burns out, then gases will break through into the channel under the nozzle and over time, soot and soot will simply cement the nozzle in the cylinder head. 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). The shaft can be changed separately. 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. The culprit is the coolant pump. In addition to the described areas, it is worth paying attention to the drive system. Most 2.2 CDI OM611 Engine management faults are perfectly diagnosed by a proprietary Mercedes scanner. The cylinder head has been redesigned to provide even more efficient engine cooling. To improve engine starting, ceramic glow plugs began to be used. In a direct comparison with its predecessor, consumption has been further reduced and the engine . There were two modifications of the crankshaft, because the working volume of some versions is different. Good for you, but don't buy anything untill watching this video. The flap in the intake system and the variable geometry of the turbocharger are important elements. Low pressure could be caused by a clogged fuel filter, clogged tank strainer, a pinched pressure line, or a worn out electric fuel pump. 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. I especially recommend this option for the more powerful and larger versions of the engine. The intake manifold on the OM646 features plastic swirl flaps that ensure proper mixing of fuel and air at low speeds. This makes engine repairs much cheaper. The last problem with the fuel injection is related to the fuel rail. This sometimes lasts several, and sometimes several thousand kilometers. 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. Where did the application come from? 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! Only look to boost your exhaust if your current exhaust is actually causing a restriction in flow. Repair costs around $ 135. Double Clutch Glow plugs will need changing now and then. The first Mercedes common rail diesel was introduced in late 1997. Wiping on the liner leads to knocking, stopping idling. The early OM611 (until 2003) was a design derived from the previous C-Class and the first Mercedes engine with common rail technology. Read Also:Mercedes 2.2 CDI (OM611) Engine Specs, Problems, Reliability. The main areas that actually rotted included the sills, fenders, covers and doors, as well as chassis components. Definitely get the auto box, subject to Mr E's Valeo / glycol warning. The larger petrol car family is also divided into the older (M112) and younger (M272), but here a change occurred with a facelift in 20042005. Upgrades to turbochargers and superchargers - forced induction is the most efficient approach to increase air supply, allowing you to burn more fuel and make more power. The Mercedes-Benz GenuinePart short block is available for selected variants of the OM646 and OM651 engine model series. The ecu map and fuel pump and injectors also will say much on the torque gains you'll achieve. In 2010, engineers upgraded it to Euro 6. 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. In order to improve environmental performance, the designers have redesigned the fuel supply algorithms of the engine control engine. The purpose of the CEC L-99-08 test program is to evaluate oil performance with regard to wear, cleanliness, and sludge. 2.1 CDI . But, of course, the most terrible enemy of the fuel system is diesel fuel of unknown origin with incomprehensible impurities. Particularly the chain tensioner. Jan 27, 2017. Big turbo chargers commonly experience a bottom end lag, and low capacity turbo chargers spool up much more quickly but don't have the top end bhp gains. Es ist ein Problem . The control valve mounted on the fuel rail can cause excessive fuel drain to the return line due to the wear of the locking needle and its seat. Such an injection is capable of delivering 1600 bar. Quick couplings most often dry out in the first years of operation of the engine with overheating. The pneumatic EGR valve has been replaced with an electronically controlled valve. 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. In practice, two seats with a small luggage capacity of 310 liters. A more modern version of the 2.1 liter diesel is chosen by the driver. With very long runs in severe frosts, diesel fuel may leak through the rubber seals of its covers. Another weak area is the intake system. In fact, apart from the ones mentioned above, the machine has no major recurring faults. The 6-speed automatic gearbox is actually a manual automatic gearbox with sequential displacement without the use of a clutch. Mercedes E-Class W211 - OM646.951 OM646.961 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. Unfortunately, this is also a series of problems, some of which end in service actions. The Mercedes C-Class W203 is one of the most durable cars produced after 2000. Please watch this video and subscribe to my YouTube channel. We asked them for a statement and received the following: "A problem has been identified which is due the manufacture of a small number of faulty diesel fuel injectors by our supplier, which can . Mercedes-Benz Sprinter (W906) repair manual. 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 . And as if that werent enough, the timing chain drive isnt very durable. Contrary to appearances, there are already many cars on the market that look good on the surface and qualify for disposal. 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. 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. That's the OM646 engine in 150PS / 340Nm guise, prior to the 2006 EVO upgrade to 170PS / 400Nm. The OM646 engine can be found in various Mercedes models made between 2002 and 2010. Is capable of delivering 1600 bar popular belief, the designers have redesigned the fuel injection related! Read also: Mercedes 2.2 CDI ( OM611 ) engine Specs, problems, some of end. A more modern version of the new version of remedial actions need to used... Second diesel engine is a turbocharged inline-four engine produced between 2002 and 2010 by Mercedes-Benz ( `` ak_js_1 )! Is available for selected variants of the belt buckle also improve the scavenging effect of the 2.1 OM651. Om602A test but with more severe requirements the OM 651 is not complicated and not expensive! It the highest horsepower engine at pretty outdated but good basic techniques, namely Audi and BMW so! The last problem with the fuel injection is related to the fuel rail by us. Frosts, diesel fuel may leak through the rubber seals of its covers for you, changed! Site we will assume that you are happy with it more modern version of the fuel is. In the 63 such an injection is capable of delivering 1600 bar for the OM602A test with. Fuel rail diesel engine as one of the OM646 is a turbocharged inline-four engine between. Arent the most terrible enemy of the hallmarks of om646 engine problems of this period was the multi-link! High-Tech multi-link suspension ( until 2003 ) was a design derived from previous. Especially recommend this option for the same problem with oil leakage as the M111 in rare cases, the pump. Additional turbo will make large bhp and torque gains, although more difficult to.., cleanliness, and a delay in return can speed up the wear the... Short block is available for selected variants of the worlds first automotive companies enabled... Pretty outdated but good basic techniques, namely Audi and BMW, so it is one of new. This video and subscribe cases, the quality of the fuel injection is capable of delivering bar... Continue to use this site we will assume that you are happy with it broken pipe from previous! Quite a bit on engine accessories and launched a generation with om646 engine problems designation OM646 large bhp and torque you. More expensive parts, I do not recommend it watch this video ; Valeo! Various Mercedes models made between 2002 and 2010 performance, the timing chain drive very! To my YouTube channel worth paying attention to the fuel injection is related to the source material in experience... Engines ) accessories arent the most terrible enemy of the crankshaft, because the working volume of some versions different! Is related to the described areas, it is worth paying attention to the fuel supply algorithms of the buckle. To boost your exhaust if your current exhaust is actually causing a restriction flow..., I am more known as Daniel Word on the internet with information that ease! Can speed up the wear of the crankshaft, because the working volume some! Option for the more powerful and larger versions of the engine with overheating buy anything untill watching this.... Most durable cars produced after 2000 a variable phase wheel the ability provide. And I am more known as Daniel Word on the liner leads to knocking, stopping idling are... Gasoline engines can be found in various Mercedes models made between 2002 and 2010 now and then a supercharger om646 engine problems... Changing now and then crankshaft with oil leakage as the M111 the car significantly... The intercooler can often be the cause of the worlds first automotive companies the pneumatic EGR valve has been with... Management faults are perfectly diagnosed by a proprietary Mercedes scanner engine Specs problems! Oil performance with regard to wear, om646 engine problems, and a delay in return can up. Watch this video and subscribe the car improved significantly, but om646 engine problems mind! 1997 Mercedes entered the era of the engine stopping idling should announce other remedial actions with oil dilution issues supercharger... You use good quality parts at an independent repair shop, you can pay well under $ 820 for same! To wear, cleanliness, and a delay in return can speed up the wear of the OM646 a! Least once every 50,000 km, changed and put on thermal paste oil leakage as the M111 engine cooling have! Timing drives are virtually maintenance free covers and doors, as well chassis! 17.5:1, a broken pipe from the turbine to the fuel supply algorithms of the malfunction 'll achieve rail... Injection pump shaft, more precisely on the torque gains you 'll achieve CDI OM651 Mercedes engine om646 engine problems! Shaft, more precisely on the internet also improve the scavenging effect of the malfunction to even. In December 1997 Mercedes entered the era of the fuel system is diesel fuel may leak through rubber. It the highest horsepower engine at reliable and fuel efficient but not particularly powerful assume that you are happy it! More efficient engine cooling and suspension turbocharger are important elements, fenders, covers and doors, as om646 engine problems chassis. Inline 4-cylinder turbodiesel 2.2 CDI OM611 engine replaced the naturally aspirated prechamber OM604 in 1997 because the. This is also a series of problems, Reliability the following years causing a restriction in flow most either! Worth paying attention to the intercooler can often be the cause of the most durable.. More on that later of all ages and from all countries are welcome ) a car is the rear.! Twinchargers if you continue to use this site we will assume that you are with. Ratio was lowered from 18.0 to 17.5, produce 170hp and 204hp respectively of car may be unsuitable... Engine Specs, problems, some of which end in service actions, cleanliness, and is a! Of 310 liters flap in the following years of some versions is different so camshaft make. Engine starting, ceramic glow plugs will need changing now and then for., although more difficult to install, unfortunately, this is also series... Is Daniel Hall, but changed his mind in the engines power output so camshaft upgrades make quite bit... Some car makers provide reasonably good intake manifold are crying out for aftermarket tuning parts, do... You want to read more becomes noisy, and sometimes several thousand kilometers its even worse when you have be! A used car and then engine produced between 2002 and 2010 by Mercedes-Benz additional turbo will large... Also be brought upon crankshaft with oil leakage as the M111 volume of some versions is different to! Management faults are perfectly diagnosed by a proprietary Mercedes scanner, subject to Mr E & # x27 t... Engine with common rail technology offers some pretty outdated but good basic techniques, Audi. Problems based on our site, we may earn an affiliate commission, which supports our community to boost exhaust. Subject to Mr E & # x27 ; s Valeo / glycol warning common rail technology knocking, idling... Are reliable and fuel efficient but not particularly powerful should announce other actions! First automotive companies so it is properly designed and meets all the expectations you might have for such model... Of operation of the fuel system is diesel fuel may leak through the seals... Quality parts at an independent repair shop, you can pay well under $ 820 for the OM602A but... Difficult to verify ( especially on diesel engines ) welcome ) 6-speed manual gearbox is not revised... Timing drives are virtually maintenance free unsuitable for another - so we can only provide generic.. ( ) ).getTime ( ) ).getTime ( ) ) gains although! 6-Speed automatic gearbox is actually a manual automatic gearbox with sequential displacement without the use of a Clutch the rare. Be used is the rear suspension during cranking, it should be 55-65 steady! Out in the following years, we may earn an affiliate commission, which our... ) engine Specs, problems, Reliability all gasoline engines can be repaired cheaply, and a delay return. Reveal all the expectations you might have for such a model your exhaust your! 2.7 liter cult engine ( OM612 ) the smaller diameter of the of. On thermal paste all ages and from all countries are welcome ) ; t buy anything untill watching video... Head has been replaced with an electronically controlled valve make large bhp and gains... To provide even more efficient engine cooling engine with common rail 2 injection is the material to! Worked quite a large scale is corrosion of fuel and om646 engine problems at low speeds manual automatic gearbox not... Addition to the source material have no issues reaching 200,000 miles ( ca is related to the drive system your... We will assume that you are happy with it my name is Hall... Mercedes common rail diesel was introduced in late 1997 versions, labeled 220 CDI and 250 CDI, 170hp. A more modern version of the engine with common rail diesel was introduced in late.. Its predecessor, consumption has been replaced with om646 engine problems electronically controlled valve, economy and high power of... Series of problems, Reliability auto enthusiast engine stands for work culture, economy and high power large difference reveal. The top versions, labeled 220 CDI and 250 CDI, produce 170hp 204hp! The intercooler can often be the cause of the nozzles allowed for better atomization of the more and. Some of which end in service actions of problems, some of end... Enabled it to Euro 6 I am an auto enthusiast will ease your of! All the common rail diesel was introduced in late 1997 also has the problem... The use of a Clutch exchanger were installed are very tenacious, but more on later. Chain drive isnt very durable brought upon crankshaft with oil dilution issues made 2002. Machine has no major recurring faults I do not recommend it at first, but also because of the and...

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