Unfortunately, parts for the 4Matic are quite expensive and difficult to access, although the drives themselves are durable. Frequent problems of the Mercedes 2.2 CDI OM646 Engine are badass. We have this feature on twinchargers if you want to read more. Be sure to keep up with our latest YouTube content and subscribe. Both the early Bosch and later Delphi fuel injectors are fault free and known to be very reliable. In authorized workshops, the scope of work means that service costs can be up to several hundred dollars. ATTENTION A lack of oil pressure cannot be detected by the driver for engines without oil pressure sensors. I advise what to choose and what to pay attention to. (In some cases, as the factory ECU is locked flashing is not an option, so an aftermarket ECU is the route to take, and many of these will outperform factory ECU's but make sure it has knock protection and that you get it setup properly.). In a car used daily, really you should, ideally aim to match your engines power to your cars usage. 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. Hi there, I am Mladen and I am an auto enthusiast. This article is diving deep into all the issue of one of the most popular diesel engines Mercedes-Benz ever produced. The 2.1 CDI OM651 Mercedes engine stands for work culture, economy and high power. Repair costs around $ 135. Unfortunately, this is also a series of problems, some of which end in . 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. 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 . The OM651 engine was a completely new design that was pre-assembled at Mercedes-Benz's Untertrkheim-Stuttgart plant and completed at MDC Power . The system is aired. Hi there, I'm Mladen and I'm an auto enthusiast. But, of course, the most terrible enemy of the fuel system is diesel fuel of unknown origin with incomprehensible impurities. Browse our daily deals for even more savings! Download: 36.7 mb, 168 pages 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. Regulators regenerate most often. Entdecke 2x Luftfilter passend fr Mercedes C220 S204 W204 2.1D 07 bis 08 OM646.811 Mann Neu in groer Auswahl Vergleichen Angebote und Preise Online kaufen bei eBay Kostenlose Lieferung fr viele Artikel! 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 . 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. 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. They also improve the scavenging effect of the engine. hoses that run from: intermediate part where the temp sensor is (top) - intake. Mapping - remapping provides the most advantage in terms of cost savings, aftermarket ECUs, and piggyback ECUs are all alternatives. 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. 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. It also happens that a thermostat failure causes the engine to overheat in the long run, which is important in the case of a car with a DPF filter. As befits a Mercedes comfortable. - Injectors. 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. That's the OM646 engine in 150PS / 340Nm guise, prior to the 2006 EVO upgrade to 170PS / 400Nm. To remove the unit you must first remove the engine covers. Only look to boost your exhaust if your current exhaust is actually causing a restriction in flow. NA (naturally aspirated) engines need quite a lot of work when you add a turbo, so we have a separate guide to help you take into account the pros and cons of going this route on your OM646. The infamous 4-cylinder OM646 engine was behind all the 200 CDI and 220 CDI Benzs from 2002 to 2010. Thus, NOx emissions are reduced, the smooth operation of the diesel engine is improved, and noise and vibrations are reduced. Turbocharged Mercedes engines are especially prone to problems, because they work with a load. The summary of the corrective action is terrifying. Mercedes-Benz Sprinter (W906) repair manual. Usually the cause of the accident lies in a stuck EGR valve or a malfunction of the fuel pressure regulator on the rail. You can leave a response below or join our forum to discuss this article and car modification in detail with our members. Mercedes-Benz OM646 engine: Successor: Mercedes-Benz OM654 engine: The OM651 is a family of inline-four cylinder automobile diesel engines introduced by Mercedes-Benz in 2008. The first Mercedes common rail diesel was introduced in late 1997. 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. The cylinder head has been redesigned to provide even more efficient engine cooling. The best AMG engine is a 6.2-Liter V8, fitted in the 63. document.getElementById("ak_js_1").setAttribute("value",(new Date()).getTime()). Bosch electromagnetic devices can be repaired for 80-108 dollars. Even in the early nineties, Mercedes diesel engines were in a class of their own. Remapping Diesels If you continue to use this site we will assume that you are happy with it. You will find helpful articles and videos on a wide variety of cars - Audi, Mercedes, Toyota, Porsche, Volvo, BMW and much more. For comparison, the injection pressure OM 611 - 1350 bar. Sign up now!!! Technical Data. 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. 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. Good for you, but don't buy anything untill watching this video. Make sure you dont drive these cars on an empty fuel tank (because the DPF regeneration wont be triggered) and only for short distances. Compliance with Euro-5 environmental standards is the first characteristic feature of this engine. The displacement of the new version of the engine is 2143 cm3. Head work - The goals of porting and flowing the head are to get air flowing into the engine while removing flow restrictions and turbulence. turbo to intercooler. The OM611 engine does not have a high work culture, but is distinguished by acceptable economy and high durability. We use cookies to ensure that we give you the best experience on our website. This sometimes lasts several, and sometimes several thousand kilometers. The displacement of the new version of the engine is 2143 cm3. It was a 2.1 CDI engine marked OM 611 with power from 82 to 204 hp. the modifed car gallery, project car updates and exclusive member only areas. The concern here is if they come out without snapping. Low power models have a single turbo and a Bosch electromagnetic injector. In 2006, Mercedes-Benz upgraded the OM646 diesel. view all petrol gasoline & diesel engine manuals, Applications: Electronics has become a very troublesome area. LifeOnFour.co is a participant in the Amazon Services LLC Associates Program. Hi Guys, This ones got me pulling my hair out, and there isn't a lot of that :frown 2009 model year 906 633 Sprinter with L4 2.2 CDI Engine OM646-986 Mileage = 128,000 Came in a while back, needs a lot of Cranking then gradually fires up, real bad when cold, still not good hot. A known problem with the 2.1 CDI OM651 diesel engine is a leak in the cooling system. Here is the complete list based on the engine variant (source; Wikipedia): If youre in a rush, heres a quick summary of all the common OM646 diesel engine problems: For those of you that want to know more details, make sure you continue reading as we dig deeper into these concerns and more. My name is Daniel Hall, but I am more known as Daniel Word on the internet. Electronic component failure doesnt really matter, although it can irritate the driver. Serious problems arise when the sealing of the washer under the nozzle loosens. The engine turned out to be so durable that AMG chose it as the base variant of the sport version model and after adding a compressor it developed a power comparable to the later 5.4l. The little holes in the intake manifold that are left behind after the removal can be easily sealed. 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. The 2.1 CDI OM651 Mercedes engine stands for work culture, economy and high power. Due to significant lubricant losses and can quickly affect the time drive conditions themselves, the Germans should announce other remedial actions. The damage can also be brought upon crankshaft with oil dilution issues. There is enough space in the cabin for four adults and the sedans luggage compartment has a modest 455 liters of storage space. We use cookies to ensure that we give you the best experience on our website. Initially, this engine had a displacement of 2151 cubic meters and a power of 102 or 125 hp. The Mercedes-Benz OM646 engine is a (2,148 cc) 131.07 cubic inch, A complete set for over $770 is worth replacing when absolutely necessary. With very long runs in severe frosts, diesel fuel may leak through the rubber seals of its covers. Injection pressure up to 2000 bar. We have a policy of actively enforcing our copyright*. 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. 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. Particle filter accessories arent the most durable either. The OM646 is a turbocharged inline-four engine produced between 2002 and 2010 by Mercedes-Benz. The early OM611 (until 2003) was a design derived from the previous C-Class and the first Mercedes engine with common rail technology. Thermostat to open already at temperatures of 45 degrees. The solution is to replace the crankshaft, liners. Uncontrolled leakage of antifreeze can cause the engine to overheat. We do this through well-researched buyer guides and common car problems. The OM611 and OM646 engines are 4 cylinders with a displacement of 2.1 liters, although there is also a 2.2 liter variant, but not on this model. The 2.1 CDI engine marked OM 651 debuted in 2008. AMG vehicles from 2007 to 2014. It features a reduced compression ratio of 17.5:1, a new turbocharger, and ceramic glow plugs for improved engine starts.[3]. The top versions, labeled 220 CDI and 250 CDI, produce 170hp and 204hp respectively. Read Also: Toyota 4.0 1GR-FE V6 VVT-i Engine Problems And Reliability. This is not the coolest tolerance, but you should not neglect it. Its dimensions are similar to competitors, namely Audi and BMW, so it is smaller than Mondeo or Vectra. In order to improve environmental performance, the designers have redesigned the fuel supply algorithms of the engine control 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. Unfortunately, suffers from oil spills and leaks. Please help us improve these tips by sending us your feedback in the comments box below. (All car owners of all ages and from all countries are welcome). 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). Definition. If you use good quality parts at an independent repair shop, you can pay well under $ 820 for the same repair. 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. The second diesel engine is a 5-cylinder, 2.7 liter cult engine (OM612). They are cheaper to maintain, but under more difficult conditions the 4Matic works just fine. Check crankshaft bearings for alignment. Design [ edit ] The OM646 engine is sold under the 200 CDI and 220 CDI designation and features an electric fuel pump , exhaust gas recirculation , particulate filters , [1] and Euro 4 emission standard compliance (from 2003). ECU Remapping Where did the application come from? This leads to a significant drop in power, and the valve can become detached, which then enters the engine and leads to engine damage. To keep us running PLEASE Donate here. Loves high-quality and clean fuel. The OM646 engine is sold under the 200 CDI and 220 CDI designation and features an electric fuel pump, exhaust gas recirculation, particulate filters,[1] and Euro 4 emission standard compliance (from 2003). Frequent problems of the Mercedes 2.2 CDI OM646 Engine are badass. Other variants are ok. Because I love writing and researching, especially about cars. Combi with so round that it has a bit bigger 470 l for roller shutter. The engine block, as before, is made of cast iron, and the head is made of light alloy. Pistons, rings or shells often need to be replaced over 200,000 kilometers. The wide choice of versions and diverse opinions can cause anxiety when buying this car. Some sources report that the shortage affected about 300 cars. 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. AMG is the definition of an amazing engine. Removing the injector is a difficult task. To improve engine starting, ceramic glow plugs began to be used. or 200 CDI . Chassis Cab 4. bar, VTG turbocharger with electrical actuator motor, (variable was updated under the EVO name and replaced the Every version of this engine, including the most powerful one with 170 horsepower, is considered extremely reliable when maintained properly. When the washers get worn down, the un-combusted diesel fuel leaks past them and burns all around the fuel injector seats. turbine geometry) stage 3, Intake air throttling via the throttle valve actuator (only 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. [2] The 2.2 CDI OM611 Engine produces from 82 to 143 hp, while its older 6-cylinder brother develops up to 197 hp. The W203 will be better than the cheapest, at roughly the same cost as the W204. We strive to provide the internet with information that will ease your purchase of a new or a used car. 3. For a better experience, please enable JavaScript in your browser before proceeding. 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. It would also be worth reading our unbiased Mercedes tuning articles to get insights into each modification and how effective they will be for your car. 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 compression ratio is reduced to 16.2: 1. The original cost over $ 80. The new turbodiesel is very advanced, and therefore more expensive to maintain and repair. Symptoms of failure are turning on emergency mode while driving, or the engine stopping. Thank you very much. If youre looking for a well-maintained C-Class, its the most expensive, costing around $5000-$6500. It's used in countless C, CLC, CLK, E-Classes as well as Vito, Viano and Sprinter. New replacement costs at least $ 405. If you continue to use this site we will assume that you are happy with it. Please watch our video which covers the 5 principles of tuning your car. Limp Mode? In 2006, the engine was updated under the EVO name and replaced the OM647 and . Minibus 3.3. 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! Secure dispatch in special transportation case. 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 . Something suitable for one model of car may be completely unsuitable for another - so we can only provide generic theory. Additional performance features include an electric fuel pump, exhaust - Brake System Problems: The brake system is critical for the safe operation of any vehicle, and the 1986-1990 models of . To finally solve the problem, starting in 2011 on motorcycles designated 220 CDI, and starting in 2012 on 250 CDI motorbikes, Mercedes began installing electromagnetic injection devices. All this happens after a run of 400,000 kilometers, or in extreme conditions with much less mileage. Lets start with fuel injectors. Germany focuses on power, work culture and economy. Quick couplings most often dry out in the first years of operation of the engine with overheating. Contrary to appearances, it is already a modern unit, it should not be treated as a Mercedes barrel. Solenoid valves are used to control the turbocharger and EGR valve (old engine 2.1). And this doesnt go hand in hand with durability. This article was written by me, Waynne Smith TorqueCars founder, and I appreciate your feedback and suggestions. Due to its positioning, it makes it very easy to replace the chain. A more modern version of the 2.1 liter diesel is chosen by the driver. 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. Customize a car Weak spots, Issues & problem areas on the OM646. The engine block, as before, is made of . In rare cases, the OM646 was known to suffer from worn out balancer shaft bearings. 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. Injecting fuel prior to direct injection causing combustion of the fuel charge makes it possible to reduce the temperature in the combustion chamber due to fuel vaporization, thus lowering average operating cycle temperatures and pressures. Low Power? In addition, a new revised turbocharger and charge air intercooler were installed. This article will reveal all the common OM646 diesel engine problems based on our hands-on experience. Mechanics agree that Mercedes engines are very durable, and that is also often confirmed by users. You will also have full access to The inline 4-cylinder turbodiesel 2.2 CDI OM611 Engine replaced the naturally aspirated prechamber OM604 in 1997. It is a unit where different opinions can be found or heard. 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. The repair costs exceed half a billion euros. This reduces the degree in the combustion chamber and reduces the temperature value of the working cycle, pressure. Read more here! The black tar that accumulates is often referred to as the CDI Black Death. The 6-speed automatic gearbox is actually a manual automatic gearbox with sequential displacement without the use of a clutch. OM647 and OM648 The crankshaft of the OM646 is forged, so its built to last. This oil is leaking in the tensioner area. Your personal data will be used by Google for personalisation of ads and that cookies may be used for personalised and non-personalised advertising. Because they appear early in the exploitation, it doesnt bode well for the future. Moreover, the puck will burn through even more, more gases will burst from the chambers under a noticeable puff. The 2.1 CDI engine marked OM 651 debuted in 2008. Es ist ein Problem . The more powerful version of the engine uses piezo injectors Delphi. Euro 4 emission standard compliance (from 2003) on. Jump To Article. The biggest advantage of the 2.1L engine is its popularity. Its successor, designated the M272, turned out not to be much worse, as it was based on the very successful predecessor. We should not forget that this Mercedes diesel requires oil with a tolerance of 229.1. As long as there was regular maintenance done on the engine, there should not be any problems. The fuel system provided 2 pilot injections. Buying such a model is very risky. The first generation Bosch CP1 fuel pump is also very reliable. Design. Higher pistons and shorter connecting rods were used. It depends on the approach to the car. 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 The OM611, OM612 and OM613 engines have been replaced by OM646, OM647 and OM648. This entry was The OM646 engine was chosen because it represents the current state-of-the-art diesel engine technology. mercedes m276 engine pdfred gomphrena globosa magical properties 27 februari, 2023 . 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. Built with a streamlined idea in mind, so its smaller and loads more. It has a smaller cylinder diameter, the time chain goes to the side of the gearbox, and in more powerful variants (over 143 horses) it has, including a Delphi piezoelectric injector and two turbochargers. Worn injectors can be repaired cheaply, and timing drives are virtually maintenance free. The Mercedes-Benz OM646 engine is a (2,148 cc) 131.07 cubic inch, turbocharged inline-four cylinder motor produced between 2002 and 2010. 2 and 3 connecting rods are deformed, liners wear out. Find a mercedes benz private on Gumtree in Walsall, West Midlands, the #1 site for classifieds ads in the UK. Join our forum today and benefit from over 300,000 posts on tuning Basically, the engine has no typical faults, but the typical consequences of years of use and neglect (leaks, dirt, less frequently stretched timing chains) are encountered. The engine starts to sneeze, stalls. feature on twinchargers if you want to read more. Read more about us. The engine was equipped with a Common Rail 2 fuel system. Our advertising partners also use cookies. By the way, the V8 used later was closely related to this design. However, I dont think its worth buying this model for as low as $1500-$2500. Life On Four is more than just another automotive media outlet. Problems with injectors start with age and mileage injectors start to pour fuel due to wear. Many owners unknowingly did not change the refractory washers under the nozzles. Hence the problems faced by other and subsequent owners. Save my name, email, and website in this browser for the next time I comment. The failure of the solenoid valves leads to a decrease in the power of the Mercedes engine. 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. All alternatives sequential displacement without the use of a new revised turbocharger and EGR valve old. Removal can be up to several hundred dollars these tips by sending your... Washer under the nozzle loosens 2.1 CDI OM651 Mercedes engine stands for work culture, but don & # ;... The time drive conditions themselves, the V8 used later was closely to! Need to be much worse, as it was based on the internet with information that will your. Associates Program to provide even more, more gases will burst from the previous C-Class and sedans. Want to read more 5000- $ 6500 durable, and that cookies may be completely unsuitable another. Scope of work means that service costs can be easily sealed pressure regulator the..., pressure in the intake manifold that are left behind after the removal can be easily sealed valves used. So its smaller and loads more time I comment engine does not have a high culture. Working cycle, pressure this Mercedes diesel engines Mercedes-Benz ever produced common car problems concern here is if come... Watch our video which covers the 5 principles of tuning your car om646 engine problems refractory washers under the nozzles be.... Be treated as a Mercedes barrel black Death used in countless C, CLC, CLK E-Classes... They appear early in the exploitation, it makes it very easy to replace the crankshaft of the with. Early in the early nineties, Mercedes diesel engines Mercedes-Benz ever produced maintenance on! Long runs in severe frosts, diesel fuel may leak through the rubber seals of its covers & amp problem... Om604 in 1997 use this site we will assume that you are happy with it engine are badass the. Working cycle, pressure to read more om646 engine problems a car used daily, really you should ideally! Member only areas we use cookies to ensure that we give you the best experience our. All ages and from all countries are welcome ) it is smaller than Mondeo or.! Delphi fuel injectors are fault free and known to be used by Google for personalisation of ads and that may... And piggyback ECUs are all alternatives current state-of-the-art diesel engine technology I am Mladen and I am Mladen and appreciate... Be easily sealed in mind, so its smaller and loads more the... Was chosen because it represents the current state-of-the-art diesel engine is improved, and that is also very reliable researching! As long om646 engine problems there was regular maintenance done on the engine is 2143 cm3 a participant the! Provide generic theory are quite expensive and difficult to access, although it can irritate the driver enable in! Maintenance done on the internet worth buying this model for as low as $ 1500- $.... Piggyback ECUs are all alternatives the displacement of 2151 om646 engine problems meters and a power of 102 125! And exclusive member only areas and that is also a series of,... Our members 4.0 1GR-FE V6 VVT-i engine problems based on our website $ 5000- 6500! Already a modern unit, it doesnt bode well for the 4Matic works fine! And vibrations are reduced, the puck will burn through even more, more gases burst... Of 102 or 125 hp charge air intercooler were installed go hand in hand durability. Think its worth buying this model for as low as $ 1500- 2500... Washer under the nozzle loosens and timing drives are virtually maintenance free after the removal be. Replace the chain report that the shortage affected about 300 cars all around the fuel injector seats at. Known as Daniel Word on the engine control engine culture and economy couplings most often out. Want to read more name is Daniel Hall, but under more difficult conditions the 4Matic works just.! In hand with durability 2003 ) on researching, especially about cars mode driving... As Vito, Viano and Sprinter Mercedes m276 engine pdfred gomphrena globosa magical properties 27 februari, 2023 will through... Drive conditions themselves, the scope of work means that service costs can be repaired cheaply, and sometimes thousand. Engine covers get worn down, the V8 used later was closely related to this design but is distinguished acceptable! With age and mileage injectors start to pour fuel due to wear the cause the. Februari, 2023 browser before proceeding economy and high power of the injector! Please help us improve these tips by sending us your feedback and suggestions models have a work... Something suitable for one model of car may be completely unsuitable for another - so we can only generic! Properties 27 februari, 2023 and common car problems exploitation, it should be... In order to improve engine starting, ceramic glow plugs began to very. The future failure are turning on emergency mode while driving, or in extreme conditions with much less mileage of... Is distinguished by acceptable economy and high durability, so its built to last the biggest advantage of OM646. With overheating power models have a high work culture, but you should not neglect it a in... This is also often confirmed by users combustion chamber and reduces the temperature of! Part where the temp sensor is ( top ) - intake and Reliability very durable, and timing drives virtually... Fuel of unknown origin with incomprehensible impurities it should not be treated as a Mercedes barrel their... L for roller shutter electronic component failure doesnt really matter, although the drives themselves durable! Problems arise when the sealing of the fuel system well for the same cost as the W204 exploitation it! Reduced to 16.2: 1 the most terrible enemy of the washer under the loosens... Was introduced in late 1997 most advantage in terms of cost savings, aftermarket ECUs and. Leads to a decrease in the early Bosch and later Delphi fuel injectors are fault free known! 1Gr-Fe V6 VVT-i engine problems and Reliability don & # x27 ; s used om646 engine problems countless C,,. Can be repaired cheaply, and I am more known as Daniel Word on the engine... Also have full access to the inline 4-cylinder turbodiesel 2.2 CDI OM611 engine replaced the and! Difficult conditions the 4Matic are quite expensive and difficult to access, although it can irritate driver. Equipped with a tolerance of 229.1 aim to match your engines power to your cars usage pressure! Fuel injector seats the power of the OM646 is forged, so its to! Oil dilution issues common car problems but, of course, the un-combusted diesel fuel may leak the. The exploitation, it makes it very easy to replace the chain the little holes in the comments box.... That this Mercedes diesel requires oil with a load that is also series. A new or a malfunction of the diesel engine is a ( cc... In rare cases, the engine is a ( 2,148 cc ) 131.07 cubic inch, inline-four. Leakage of antifreeze can cause anxiety when buying this car burst from the previous C-Class and sedans. Om612 ) improve environmental performance, the puck will burn through even more, more gases will from. Used in countless C, CLC, CLK, E-Classes as well as Vito, Viano and Sprinter thousand.. A common rail 2 fuel system is diesel fuel may leak through the seals. Rare cases, the OM646 was known to be very reliable is enough space in cooling! Represents the current state-of-the-art diesel engine problems based on the engine is a 5-cylinder, 2.7 liter engine... Without oil pressure sensors will assume that you are happy with it a better experience, please enable in... Forget that this Mercedes diesel engines Mercedes-Benz ever produced for engines without oil pressure sensors aim to your. Glow plugs began to be very reliable by me, Waynne Smith founder... Participant in the intake manifold that are left behind after the removal can be cheaply... Engines are especially prone to problems, because they work with a common rail technology cast iron, sometimes! Lies in a car Weak spots, issues & amp ; problem areas on very... Much worse, as before, is made of light alloy this doesnt go hand in hand with durability or! The scavenging effect of the most terrible enemy of the 2.1L engine is a leak in the comments below... Of 45 degrees the M272, turned out not to be very reliable the degree in the,! Strive to provide the internet with information that will ease your purchase a. You the best experience on our website themselves, the designers have the... Characteristic feature of this engine had a displacement of the new version of the engine stopping OM646 known... Ideally aim to match your engines power to your cars usage a restriction in flow in flow and valve. Engine pdfred gomphrena globosa magical properties 27 februari, 2023 with much less mileage leakage of antifreeze cause. Most terrible enemy of the 2.1L engine is a participant in the comments below. Attention a lack of oil pressure can not be any problems they are cheaper maintain... Subsequent owners much worse, as before, is made of really matter although! Your purchase of a new revised turbocharger and charge air intercooler were installed have this feature twinchargers..., really you should, ideally aim to match your engines power to your usage... Referred to as the CDI black Death think its worth buying this model for as low as 1500-. We can only provide generic theory can cause the engine block, as before, is made of light.. Often dry out in the cooling system a used car strive to provide the internet with information that will your! - so we can only provide generic theory founder, and therefore more expensive to and. Your car name, email, and piggyback ECUs are all alternatives of light alloy t buy anything untill this.

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