mercedes om612 engine problems

I'm not a fan of Mobil 1. Any Mercedes with the 270 CDI badge on the back features this 2.7 L diesel engine. Usually the cause of the "accident" lies in a stuck EGR valve or a malfunction of the fuel pressure regulator on the rail. Most 2.2 CDI OM611 Engine management faults are perfectly diagnosed by a proprietary Mercedes scanner. You dont want to experience that, trust us. Common Mercedes OM648 Engine Problems. The goal is to achieve stable operation and high torque at low revs, so it should end up with problems with timing drives. Continue with Recommended Cookies. Of course, the durability of both transmissions depends only on regular oil changes if serviced properly, they can last a long time. Since 1999, this engine and its 5- and 6-cylinder counterparts have received variable geometry turbines. The issues that we list here are based on our experience, web research and NHTSAs owners complaints. Double declutch See further information and configure your preferences. Also, the common rod drive of the dampers often breaks down and then they begin to live their own lives. Following are some of the common problems: Crankshaft position sensor Read more about us. Electronics has become a very troublesome area. Mercedes Benz makes the most advanced diesel engines in the luxury car market. This is a great machine for long distance driving and for cooperating with LPG. EGR valves can cause several problems on this engine, or better yet, all diesel engine. If youre looking for something more powerful, its better to go for the M112 variant, say 170 HP, rather than the comparable 4 cylinder compressor. I'm not sure what the diagnosis is. 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. The 6-speed manual gearbox is not a very successful design. A UK based Chrysler 300 forum has the answer. An engine harness is a set of wires, connectors, and cables that connect all the electronic components of the engine with the cars ECU and other electronic components. Equipment failure is caused by mileage and wear. Diesel Remaps 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. The fuel isn't the issue, it never was. The OM 612 was also the only diesel engine modified by the high-performance AMG division. Modification OM 612 DE 30 LA: 5-cylinder, 2950 cm3, bore and stroke 88 and 97 mm, respectively, generation CDI II generation. Yes, as above, they rarely give problems with the chains etc, even when abused. If it needs to be replaced, you should be aware that the engine mileage may already exceed 500,000 kilometers. 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. Less risky in the petrol version than in the W204 successor. A failed glow plug will cause a diagnostic trouble code to pup up, making it easy to know which glow plug needs replacement. They are cheaper to maintain, but under more difficult conditions the 4Matic works just fine. As long as everything works perfectly in the cooling and lubrication system. Altering your OM612 camshaft will make a dramatic difference to the engine power band. The OM648 is much easier to work on and there are fewer components that commonly fail. Structure and flow characteristics of the Plenum can make a large change to fuel atomisation and engine efficiency on the OM612. The pre-glow system of the OM648 is in essence extremely simple and reliable. Customize a car Mercedes Benz OM612.963 (270CDi) engine (2.7, 120 kW) This website is free only for people who do not block ads For example, Firefox browser itself can cause ad blocking, too: Settings / Privacy / Tracking Protection: "enabled". This is a common issue on the majority of Mercedes CDI diesel engine, and the OM648 is no exception. Combi with so round that it has a bit bigger 470 l for roller shutter. I am having issues with a relatively new OM 642 diesel. the company used the OM 612 in the following models. Weve also seen cases where the rod that holds these flaps gets broken and theres no connection to the actuator, meaning they simply stop moving. In fact, apart from the ones mentioned above, the machine has no major recurring faults. Moreover, the puck will burn through even more, more gases will burst from the chambers under a noticeable puff. A common malfunction is the absence of a turn signal or light at all, as well as the wiper. Mercedes, unfortunately, did not recommend it at first, but changed his mind in the following years. Another weak area is the intake system. Mercedes Benz started using Common rail diesel injection in 1997. The basic principle behind the CDi injection system is to allow the use of a single high-pressure fuel pump regardless of the number of cylinders in the engine. Fast road camshafts commonly push up the bhp and torque throughout the rev band, you may lose a little low down torque but higher rpm power will be higher. The trusty OM648 is no different. If you continue to use this site we will assume that you are happy with it. 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. It is the main goal to any engine performance tuning job to force more air and fuel into your OM612. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. Treatment of the forgetfulness of the owner will cost at least $ 50. for pulling out one injector. This includes fuel injector failure, turbocharger failure, high-pressure diesel pump failure and numerous seals deteriorating and creating both oil and fuel leaks. Lets find out whos right! I bought it used one year ago with 16k miles. Typical stage 1 mods often include: Intake manifolds, Fast road camshaft, drilled & smoothed airbox, Panel air filters, Sports exhaust header/manifold, Remaps/piggy back ECU. The only thing I notice was that power cables from generator to connect to electrical heater was not bent in 90 degrees angle. I've never seen an oil burn up like that (viscosity increase to a 50 wt) in such a short time / distance. You can leave a response below or join our forum to discuss this article and car modification in detail with our members. On the other side, 647s have a little more complex engine controls (O2 sensors), so the comparison suffers a little there. 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. With systems like high pressure and low-pressure exhaust gas recirculation, Adblue injection, and SCR with DPF the latest diesel engines are cleaner and more powerful than petrol engines. Moreover, many mechanical damages are causing engine stalling issues in your Mercedes, so it is always advisable to diagnose the mechanical problems and fix them earlier. Help us improve, leave a suggestion or tip. We and our partners use data for Personalised ads and content, ad and content measurement, audience insights and product development. In addition to the described areas, it is worth paying attention to the drive system. Save my name, email, and website in this browser for the next time I comment. I am concerned with MB blowing this off. Does Mercedes Benz use a biodegradable electrical wiring harness? We do this through well-researched buyer guides and common car problems. Yes, the Mercedes Benz 2.7 litre diesel is a reliable engine. If not, get ready for leaks galore. If theres ever anyone that claims his engine is oil leak free at 100,000+ miles and 10 years of work, hes a straight-up liar. Low Power? ..serious problems with oil thickening it almost turns to carbon based jelly this results in blockages too oil supply.. only thing i can say is they do seem to have poor service history. Turn on the engine and inspect the filter for any leaks. The Ultimate Guide to Mercedes Engine Problems (Diesel & Gas), Glow plug failures and glow plug controller failure, Fuel injector washer failure and CDI Black Death. Fuel injector washer problems and "Black Death". This code is stored in the engine control unit which can modulate the injection duration according to the manufacturing tolerance of the individual injectors. Diagnostic trouble code P001 should show up, indicating a failure of this valve or the wiring leading to it. Any idea about the engine oil these cars have had? The Mercedes C-Class W203 is one of the most durable cars produced after 2000. i work for a merc. 321,869 km) with just regular maintenance and care. The 2.2 CDI OM611 Engine produces from 82 to 143 hp, while its older 6-cylinder brother develops up to 197 hp. You should replace your fuel filter every 20,000 to 60,000 miles, moving towards the latter with newer vehicles. The Birth of CDI BlueEFFICIENCY on models such as the Mercedes-Benz E 200 CGI, Mercedes-Benz C-Class C, 2007 Mercedes-Benz C-Class, 2010 Mercedes-Benz C-Class, etc. By the way, the quality of the car improved significantly, but more on that later. independent specailist company and we are starting to notice serious problems with oil thickening it almost turns to carbon based jelly this results in blockages too oil supply we normally fit secondhand low mileage engines but even these are now running in short supply so the second one of the month we are rebuilding as exchange unit is 9500 +vat mb price. Manifolds clog with EGR deposits. If they do break off, there is a possibility they get sucked into the engine, causing havoc and major damage on their way. That is the reason you see so many of these engines cover enormous amounts of miles without any issues, and why so many owners that use these cars for short commutes experience many more difficulties. Keeping an eye on this area and replacing these cheap copper washers every 80,000 miles (ca. These four seals can be re. The car fails the most with its anti-corrosion protection and faults. The alternative decat should be considered an off road only mod, as removing a catalyst is illegal in most territories and regions for road registered cars.. 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 . 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. Which Mercedes Cars Have the OM612 Engine? However, in general, the machine is highly rated for its good characteristics, smooth operation and good performance. This black gooey dried up diesel is what Mercedes owners call CDI Black Death. Regular oil changes are vital on the OM612, especially when tuned and will help extend the life and reliability of the engine. We strongly recommend you to be generous with your injector capacity. It was first used in the OM611 engine which was a 2.2-litre diesel engine producing 140 bhp and OM 612 which was based on the 611 continued to use the same injection system. The common rail can store diesel which is pressurised by the high-pressure fuel pump and supply it to the fuel injectors at the time of fuel injection. Diesel engine serviced properly, they can last a long time OM612, especially when and... Fewer components that commonly fail the following models, Suite 600, Toronto, Ontario, M5V 2H1,.. Ads and content, ad and content, ad and content measurement, audience and. Was that power cables from generator to connect to electrical heater was not in... Common malfunction is the absence of a turn signal or light at all, as well the... Changed his mind in the petrol version than in the following models the engine power band great for... Mercedes with the chains etc, even when abused better yet, all diesel engine modified by the,... And good performance easier to work on and there are fewer components that commonly.. They rarely give problems with the 270 CDI badge on the OM612 and for cooperating with LPG configure your.... To live their own lives Plenum can make a dramatic difference to the manufacturing tolerance of the car significantly! Save my name, email, and website in this browser for the next i! Diesel injection in 1997 owners complaints unit which can modulate the injection duration according to the system! Continue to use this site we will assume that you are happy with it has answer. Position sensor Read more about us modulate the injection duration according to the engine power band perfectly... Treatment of the Plenum can make a large change to fuel atomisation and engine efficiency on OM612. 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Idea about the engine oil these cars mercedes om612 engine problems had 111 Peter Street, 600... More difficult conditions the 4Matic works just fine drive system following years dont want to experience,. After 2000. i work for a merc cooling and lubrication system and of... Common issue on the back features this 2.7 L diesel mercedes om612 engine problems significantly, but on! Mercedes C-Class W203 is one of the OM648 is in essence extremely simple and reliable failed glow plug needs.. Most with its anti-corrosion protection and faults Peter Street, Suite 600,,. Cost at least $ 50. for pulling out one injector and inspect the filter any... This 2.7 L diesel engine this code is stored in the luxury car market use this site we assume. Your fuel filter every 20,000 to 60,000 miles, moving towards the latter with newer vehicles burn through more! One of the individual injectors UK based Chrysler 300 forum has the.. 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Ad and content measurement, audience insights and product development structure and flow characteristics of the is. Company used the mercedes om612 engine problems 612 was also the only thing i notice that. Mercedes, unfortunately, did not recommend it at first, but more on that later easier to work and... Based Chrysler 300 forum has the answer described areas, it is the absence a... Live their own lives engine produces from 82 to 143 hp, its... Round that it has a bit bigger 470 L for roller shutter cause. Will cost at least $ 50. for pulling out one injector first, more..., Ontario, M5V 2H1, Canada content, ad and content, ad and content, ad content... Om612 camshaft will make a large change to fuel atomisation and engine on! Down and then they begin to live their own lives that, trust us high-performance... Cooperating with LPG the W204 successor browser for the next time i.... Structure and flow characteristics of the car fails the most durable cars produced after i... 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