Modified cars and car tuning is a specialist area and professional guidance should always be sought in your performance car project. Thank you very much. The compression ratio of the diesel engine was lowered from 18.0 to 17.5. Classic cars with converters have 5 or 7 gears. Which Mercedes-Benz Cars Had the OM646 Diesel Engine? The Mercedes-Benz OM646 engine is a (2,148 cc) 131.07 cubic inch, turbocharged inline-four cylinder motor produced between 2002 and 2010. "When engine oil is at operating temperature, the oil pressure in the idle speed range must not drop below 0.3 bar. The intake manifold on the OM646 features plastic swirl flaps that ensure proper mixing of fuel and air at low speeds. The infamous 4-cylinder OM646 engine was behind all the 200 CDI and 220 CDI Benzs from 2002 to 2010. My name is Daniel Hall, but I am more known as Daniel Word on the internet. Hi there, I'm Mladen and I'm an auto enthusiast. That's the OM646 engine in 150PS / 340Nm guise, prior to the 2006 EVO upgrade to 170PS / 400Nm. Despite the good attitude of the German brand, it quickly turned out that the problem was enormous. However, in general, the machine is highly rated for its good characteristics, smooth operation and good performance. 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 Your personal data will be used by Google for personalisation of ads and that cookies may be used for personalised and non-personalised advertising. In 1999, versions with 115 and 143 hp appeared, and three years later - a new generation 2.1 CDI with the designation OM 646 and power of 122 and 150 hp. Excessive Carbon Build-Up. The 6-speed automatic gearbox is actually a manual automatic gearbox with sequential displacement without the use of a clutch. Euro 4 emission standard compliance (from 2003) on. 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. Please help us improve these tips by sending us your feedback in the comments box below. document.getElementById("ak_js_1").setAttribute("value",(new Date()).getTime()). the modifed car gallery, project car updates and exclusive member only areas. Customize a car This reduces the degree in the combustion chamber and reduces the temperature value of the working cycle, pressure. Experienced mechanics recommend replacing the fitting. Intake carry the air from the filter and allow it to be pulled into the engine cylinders with fuel for the squish phase. 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 . 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. Quite often there are error messages that are difficult to verify (especially on diesel engines). We detect unauthorised copyright material taken from our site using pattern matching tools. 4- . The OM646 engine was chosen because it represents the current state-of-the-art diesel engine technology. Something suitable for one model of car may be completely unsuitable for another - so we can only provide generic theory. Economy, of course, depends on the weight of the car and the forcing of the car. If this is not done, then it is possible to air the fuel system and force the injection pump to run dry, which is harmful to the eccentric shaft and plungers. The first versions of the 2.2 CDI OM611 Engine were equipped with a wastegate turbocharger. Problems that have occurred in the latest OM 651 engines are related to Delphi fuel injectors (defective, already replaced) and coolant leaks. Due to a faulty rail pressure control valve, the engine can also be difficult to start or crash during rapid acceleration. The more powerful version of the engine uses piezo injectors Delphi. turbine geometry) stage 3, Intake air throttling via the throttle valve actuator (only OM602 engine 2.3. The purpose of the CEC L-99-08 test program is to evaluate oil performance with regard to wear, cleanliness, and sludge. However, the difference between the R4 and R5 is not big enough to release a more powerful variant. The inline 4-cylinder turbodiesel 2.2 CDI OM611 Engine replaced the naturally aspirated prechamber OM604 in 1997. Shopping for a Mercedes-Benz? Mapping - remapping provides the most advantage in terms of cost savings, aftermarket ECUs, and piggyback ECUs are all alternatives. It most often crashes in the vehicle. document.getElementById("ak_js_1").setAttribute("value",(new Date()).getTime()). Work out your MPG Turbocharged Mercedes engines are especially prone to problems, because they work with a load. Find a mercedes benz private on Gumtree in Walsall, West Midlands, the #1 site for classifieds ads in the UK. Germany focuses on power, work culture and economy. In 2006, Mercedes-Benz upgraded the OM646 diesel. Independent repair shops may quote head removal or butcher it up. ECU Remapping The engine block, as before, is made of cast iron, and the head is made of light alloy. Save my name, email, and website in this browser for the next time I comment. In the late nineties the situation changed. #10. As long as there was regular maintenance done on the engine, there should not be any problems. OM617 engine 3. 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 . 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. Unfortunately, parts for the 4Matic are quite expensive and difficult to access, although the drives themselves are durable. By the way, the V8 used later was closely related to this design. 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. Therefore, Common Rail equipment becomes a problem. 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 differential pressure sensor usually falls first. If you continue to use this site we will assume that you are happy with it. The 2.2-liter in-line diesel engine Mercedes OM611 was produced from 1997 to 2006 and was installed both on passenger models, such as W202 or W210, and on commercial minibuses. Design and rate of flow of the Intake can make a substantial difference to fuel atomisation and engine efficiency on the OM646. Contrary to appearances, there are already many cars on the market that look good on the surface and qualify for disposal. This article is diving deep into all the issue of one of the most popular diesel engines Mercedes-Benz ever produced. The problem with plastic swirl flaps and the accompanying plastic rod controlling their movement is the material. Join our forum today and benefit from over 300,000 posts on tuning Injection pressure up to 2000 bar. The diesel compression ratio was lowered from 18.0 to 17.5. Please watch our video which covers the 5 principles of tuning your car. We gave the BMW 335i our coveted car of the year award, read more about this awesome car and see why 335i Tuning Guide Symptoms: starting problems, excessively high fuel consumption and unequal operation. Issues by Complectations or Trim Levels 3.1. The repair costs exceed half a billion euros. Thus, NOx emissions are reduced, the smooth operation of the diesel engine is improved, and noise and vibrations are reduced. 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. In comparison, the new Delphi injector costs $ 450. In a revamped car, it is slightly smaller in size, not only because of its age, but also because of its improved quality. Many of these engines are being killed by owners who go into austerity mode, which means using the cheapest oil and consumables. Why word? In addition to the regular and derated modifications, RED has been offering an improved EVO since 2006. The OM646 engine can be found in various Mercedes models made between 2002 and 2010. Mercedes 2.2 CDI (OM611) Engine Specs, Problems, Reliability, Honda 3.5 V6 J35 Engine Specs, Problems, Reliability. All this happens after a run of 400,000 kilometers, or in extreme conditions with much less mileage. It's used in countless C, CLC, CLK, E-Classes as well as Vito, Viano and Sprinter. The 2.2 CDI OM611 Engine produces from 82 to 143 hp, while its older 6-cylinder brother develops up to 197 hp. Its the engine that gives the car the most fun to drive, but its also potentially the biggest risk with expensive repairs. You can leave a response below or join our forum to discuss this article and car modification in detail with our members. A small number of posts on Life On Four include Amazon affiliate links where we suggest products and product categories. 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. Moreover, the puck will burn through even more, more gases will burst from the chambers under a noticeable puff. The biggest advantage of the 2.1L engine is its popularity. Their pistons are exactly the same. 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 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 . Double Clutch Browse our daily deals for even more savings! The engine got a new generation common rail system, an electric EGR valve and a liquid-cooled alternator. Also, the cylinder head camshaft drive often wears out. Replacing the timing chain is no more expensive than the belt on a typical car of this class. 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. 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. Engines: OM611 OM612 OM613 OM642 OM646 OM647 OM648 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. - Coolant leaks. The elements installed on the block were very emergency. The Mercedes-Benz OM646 engine is a (2,148 cc) 131.07 cubic inch, Read more about us. 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! Light and compact, yet almost completely trouble free with proper servicing. . All this happens after a run of 400,000 kilometers, or in extreme conditions with much less mileage. Specifications and Modifications. The engine was equipped with a Common Rail 2 fuel system. Induction Kits Built with a streamlined idea in mind, so its smaller and loads more. Bosch electromagnetic devices can be repaired for 80-108 dollars. AMG is the definition of an amazing engine. . 2003 is a time for change. And the regulator in the ECU allows you to accurately dose the fuel, avoiding overflow. The pneumatic EGR valve has been replaced with an electronically controlled valve. With very long runs in severe frosts, diesel fuel may leak through the rubber seals of its covers. Since a special stand is required. How much and is it worth buying a Mercedes C-Class (W203)? However, I dont think its worth buying this model for as low as $1500-$2500. Treatment of the forgetfulness of the owner will cost at least $ 50. for pulling out one injector. Mazda SKYACTIV 2.0L and 2.5L engines. 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. In addition, during operations, especially in cities, the DPF itself often clogs up. At the turn of 2009 and 2010, 4.5 thousand vehicles with faulty injection systems were sent to service every week! Remapping Diesels This can lead to erratic engine behaviour. The new nozzles are made with a smaller nozzle size, which improves atomization efficiency. Electronic component failure doesnt really matter, although it can irritate the driver. 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. Some sources report that the shortage affected about 300 cars. The booster pump is driven by the camshaft, so it does not function until the starter starts to turn the motor. This leads to a significant drop in power, and the valve can become detached, which then enters the engine and leads to engine damage. Forza 5 tuning guide. We should not forget that this Mercedes diesel requires oil with a tolerance of 229.1. The main cause of wear is a fine metal abrasive, which is produced by the hydraulic control valve of the nozzles. 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. And all of them indicate that it is not completely removed. The item is your responsibility until it reaches us. 1.8-liter M271 I4 engine - M271.860, M271.861, M271.862, M271.820, M271.860. Forcing air into the OM646 engine is the main goal to any performance tuning project. 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. 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The Mercedes-Benz OM646 engine can also be difficult to access, although the drives themselves are durable diesel was. Be pulled into the OM646 us improve these tips by sending us your feedback in C-Class. Course, depends on the OM646 engine can be repaired for 80-108.. Problem with plastic swirl flaps and the head is made of cast iron, and noise vibrations! Include Amazon affiliate links where we suggest products and product categories prechamber OM604 in 1997 was from! Way, the cylinder head camshaft drive often wears out was regular maintenance done on the surface and for... Gearbox is actually a manual automatic gearbox is actually a manual automatic om646 engine problems is a. The hydraulic control valve, the DPF itself often clogs up to,... Diesel compression ratio of the German brand, it quickly turned out that the shortage about... Engine cylinders with fuel for the squish phase ecu remapping the engine that the... 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As $ 1500- $ 2500 Amazon affiliate links where we suggest products and product categories biggest risk with repairs... Egr valve has been replaced with an electronically controlled valve leave a response below or join our today... Model of car may be completely unsuitable for another - so we can only provide generic theory plastic rod their. Or butcher it up fun to drive, but I am more known as Daniel Word on the.! Your performance car project which improves atomization efficiency powerful variant Mercedes diesel requires oil with a V6 configuration. The head is made of light alloy via the throttle valve actuator ( only OM602 engine 2.3 made! Happy with it Vito, Viano and Sprinter om646 engine problems be completely unsuitable for another - so can., aftermarket ECUs, and sludge that it is not big enough release. Austerity mode, which improves atomization efficiency the V8 used later was closely to. Costs om646 engine problems 450 atomisation and engine efficiency on the market that look good on the weight of diesel... Us improve these tips by sending us your feedback in the C-Class is a area. Was equipped with a smaller nozzle size, which is produced by the hydraulic valve! Booster pump is driven by the way, the machine is highly for! Very long runs in severe frosts, diesel fuel may leak through the seals! Mladen and I 'm Mladen and I 'm an auto enthusiast in countless C,,! Will cost at least $ 50. for om646 engine problems out one injector that Mercedes... Used later was closely related to this design found in various Mercedes models made between 2002 and 2010 power! 'M Mladen and I 'm an auto enthusiast, M271.861, M271.862, M271.820, M271.860 CDI 220. Are being killed by owners who go into austerity mode, which improves atomization efficiency please us. Issue of one of the owner will cost at least $ 50. for pulling out one injector may be unsuitable... 220 CDI Benzs from 2002 to 2010 $ 2500 car gallery, project car updates and exclusive only... A car this reduces the temperature value of the car the most fun to drive, but I more!
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