Carbon deposits lodge on and around the swirl flaps until they eventually block their movement completely. Diesels. There were two modifications of the crankshaft, because the working volume of some versions is different. 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. What are the common problems in the 2.7 litre Mercedes Benz diesel engine? The pre-glow system of the OM648 is in essence extremely simple and reliable. To avoid this issue, simply replace the inexpensive copper washers at the first sign of trouble. Its power range is from 102 to 272 HP and up to 367 HP if we count the variants signed by AMG. To keep us running PLEASE Donate here. The direct fuel injectors are connected to this rail via high-pressure fuel lines. 3 trips to denver from Chicago and all highway locally too. Contrary to appearances, there are already many cars on the market that look good on the surface and qualify for disposal. In this case, it is better to remove the dampers, and plug the holes for their axes. Oil leaks. However, in general, the machine is highly rated for its good characteristics, smooth operation and good performance. OM612 5 cylinder 2.7L engine into this: 190D 2.5 turbo? The insulation of the engine wiring harness is known to melt or degrade because of a biodegradable material used in manufacturing. The older M112 engine was then a novelty in Mercedes offering, as it had a V6 configuration, unlike the previous R6. Please drive sensibly we do not endorse reckless driving. 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. Any thoughts? Increasing the OM612 valve size, doing some port work and head flowing will also improve torque, & importantly will permit an improved torque increase on other parts. So please pay attention to this article. By using a variable nozzle turbocharger, this unit produces 150 kW or 201 horsepower at 4200 RPM with 500 Nm or 369 lb ft of torque. These engines will easily cover 200,000 miles (ca. In summary, all gasoline engines can be recommended. document.getElementById("ak_js_1").setAttribute("value",(new Date()).getTime()). The BIGGEST and best independent MB forum in the UK, MB Club UK is A Mercedes Enthusiast club run by enthusiasts for enthusiasts. Now there is the 16-valve aluminum cylinder head with two camshafts, hydraulic lifters/tappets, and electronic fuel injection. ECU Remapping
As this happens, the plastic swirl flaps get stuck or, even worse, break off. It also converts the kinetic energy of the motor into a reusable form . The first versions of the 2.2 CDI OM611 Engine were equipped with a wastegate turbocharger. By the end of 1999, the common rail diesel injection technology was very popular as it injected the common rail capable of injecting diesel at high pressure without the need for multiple fuel pumps. An example of data being processed may be a unique identifier stored in a cookie. I think there is "special" circumstance here like the oil degrading or a heat factor/cycles. Manage Settings The new compact cast iron cylinder block was developed specially for this engine. styling and friendly car banter. Maybe a short drain interval is coming Maybe these badly maintained engines were not running the correct MB approved engine oils. Turbo actuator fault 4. You only need to boost your exhaust if the current exhaust is actually causing a restriction. You will also have full access to
The Mercedes-Benz OM611, OM612 and OM613 were a family of diesel engines with four, five and six cylinders, respectively. The booster pump is driven by the camshaft, so it does not function until the starter starts to turn the motor. 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. Many owners unknowingly did not change the refractory washers under the nozzles. Many owners decide to get rid of the EGR completely. This is not the official number, however, based on experience the weight of the OM648 with all the accessories (alternator, turbo, etc.) (v6 diesel,all models,year range is 2005-2008 so far). This setup caused less stress on the cam profiles and the engine can maintain its peak output even after completing high mileage. The engine is relatively simple, very popular, so it is not a hassle in terms of service and repair. The cars were marked as Sequentronic, only available in petrol versions, thankfully rare. The OM612 engines are fantastic to work on and we're finding that there are increasing numbers of modifications and tuning parts around. When you turn off the engine, the valve is supposed to open and release the remaining fuel back to the fuel tank. Several templates and tools are available to assist in formatting, such as Reflinks (documentation), reFill (documentation) and Citation bot (documentation). 2. Modification OM 612 DE 27 LA: 5-cylinder, 2685 cm3, bore and stroke 88 and 88.3 mm, respectively, generation CDI II generation. The 3.0 CDI V6 (OM642) engine is equipped with two DPF filters, which will not cause any problems provided that oil that meets Mercedes standards (229.31 or 229.51) is used, and the entire power unit is properly taken care of. As far as I can tell, the 2 black hoses can only be replaced by taking off the intake manifold. If you are in the market for an OM612 powered Mercedes today, make sure that the engine was at least partially resealed. The OM612 had double overhead camshafts driven by a timing chain connected to the crankshaft. Regular oil changes are vital on the OM612, especially when tuned and will help extend the life and reliability of the engine. In fact, they differ only in the number of cylinders. Resealing an entire OM612 engine is no joke, and we dont want you to be the next owner who gets hit with numerous leaks and fairly high costs. This includes fuel injector failure, turbocharger failure, high-pressure diesel pump failure and numerous seals deteriorating and creating both oil and fuel leaks. Compared to its predecessor OM604, it has 30% more power, 50% more torque and 10% less fuel consumption. 6129XX 5: 54 ENGINE CABLE HARNESSES: 160 ENGINE CABLE HARNESS IL. You already know how this must feel when its pulling, right? After purchase, it is worth taking care of this area. 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). 1. This entry was
The only solution is to replace the faulty CKP sensor. A failed glow plug will cause a diagnostic trouble code to pup up, making it easy to know which glow plug needs replacement. They also increase the scavenging effect of the engine. We deliver enhanced functionality for your browsing experience by setting these cookies. The OM 612 is like OM611 with one additional cylinder, a 6 cylinder OM613 was also manufactured after 2002. It was introduced in 1999 for the 2000 model year in a 170 PS (125 kW; 168 hp) version in the W210 E-Class, W211 E-Class, W163 ML-Class, W203 C-Class and W209 CLK-Class in 2000. The flap in the intake system and the variable geometry of the turbocharger are important elements. When inspecting the car, check all the buttons and knobs, because maybe something you care about is not working. Variable intake manifold flaps, or swirl flaps as they are commonly called, help diesel engines regulate the fuel/air mixture in the engine. Which is better, the newer V6 OM642 engine or the older l6 OM648 engine? I just started the process of opening a case with MB. All content is subject to copyright protection - LifeOnFour 2023, Common Mercedes OM612 (270 CDI) Engine Problems, Black Death CDI fuel injector seal failures. Other variants are ok. Which models used the 2.7 litre Mercedes Benz diesel engine? These are the most common oil leaks locations of the OM648 engine: However, Its important to note that the OM648 engine does not suffer from the same oil cooler leak like the V6 OM642 engine. However, as you can see in this OM612 Engine Harness Remove and Replace owners forum thread, it is sometimes the only possible solution to various engine issues. 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. Also, the engine got new crankshaft, connecting rods, pistons, and other parts. The majority of these cars have covered many miles by now. Dirt collects in the collector, and as a result, the cover that controls the length of the channel is damaged. What are some common Mercedes OM612 engine problems? If the car was not properly services, just leave and save yourself the trouble. Help us improve, leave a suggestion or tip. They are especially helpful in the lower RPM range, improving the torque in this range and lowering exhaust emissions at the same time. Our advertising partners also use cookies. Typical stage 3 mods often include: Adding or Upgrading forced induction (turbo/supercharger), Competition cam, Internal engine upgrades (head flowing porting/bigger valves), Engine balancing & blueprinting, Twin charging conversions, Crank and Piston upgrades to alter compression. On the other side, 647s have a little more complex engine controls (O2 sensors), so the comparison suffers a little there. Continue with Recommended Cookies. Many times, while driving the car on the road you will notice that the engine stalls suddenly which may cause a panic attack to the driver because potentially it can lead to severe accidents on the road. More power needs more fuel. Quite often there are error messages that are difficult to verify (especially on diesel engines). If they get stuck in a closed position, they severely impact the operation of the engine. In practice, under the mass designation version, there are 4 gasoline engines (excluding AMG) and 3 diesel engines. The durability of the structure itself is very high. Most 2.2 CDI OM611 Engine management faults are perfectly diagnosed by a proprietary Mercedes scanner. On most factory exhausts you should find that the flow rate is still good even on modest power gains, but when you start pushing up the power levels you will need to get a better flowing exhaust. The posted views of our members are in no way the views of MBClub.co.uk or its owners. 1999 W210 E-Class and 2000 W203 C-Class for Belgium, 1999 W210 E-Class and 2000 W203 C-Class for others than Belgium. It was also turbocharged with an air-cooled intercooler, the 2.7-litre displacement effortlessly produced more than 160 horsepower. A UK based Chrysler 300 forum has the answer. Remaps should help to fully realize the full potential of all the tuning mods you've done to your OM612. If you continue to use this site we will assume that you are happy with it. The reason for this malfunction is seen as insufficient performance of the oil pump against the background of a high load on the crankshaft, especially when constantly driving in tightness in high gears on a loaded minibus. Dodge. The second diesel engine is a 5-cylinder, 2.7 liter cult engine (OM612). As the efficiency of the new generation engines was increased, there was not enough heat to heat the passenger compartment at low temperatures. The Mercedes OM612 have loads of potential and with the ultimate sports mods like remapping, turbo improvements and camshafts you will substantially maximize your driving enjoyment. The fuel line replacement kit from Europarts-SD comes with 5 lines - 3 clear and 2 black hoses. Including the OM648 diesel. Front engine bearings can fail. Can a Mercedes Benz last for 100k kilometres? If an injector is replaced, its data matrix must be coded into the engine control unit. Mercedes-Benz OM602 engine - Wikipedia en.wikipedia.org So the engine is about the same as OM605, but makes a little bit less power and little bit less mileage (because it's older tech) but it's every bit as reliable (maybe even more). Few problems should happen as long as they are regularly serviced and maintained. 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. These engines have no issues reaching upwards of 300,000 miles (ca. Please consider converting them to full citations to ensure the article remains verifiable and maintains a consistent citation style. Glow plugs are prone to failure in this engine, however, it is possible that the controller itself fails or the wiring and connectors snap and cause issues. Still, that's 1.25 BILLION dollars in repairs. Diagnostic trouble code P001 should show up, indicating a failure of this valve or the wiring leading to it. You can leave a response below or join our forum to discuss this article and car modification in detail with our members. Motorsport camshafts, push up the higher rpm power band but as a result the car will not idle smoothly and low end power nearly always suffers. I've never seen an oil burn up like that (viscosity increase to a 50 wt) in such a short time / distance. There's a mod to remove this. Replacing the engine harness is neither simple, nor is it cheap. Diesel power indeed. there is no electrical connection to much or to little and all has fitted well. document.getElementById("ak_js_1").setAttribute("value",(new Date()).getTime()). 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. We and our partners use data for Personalised ads and content, ad and content measurement, audience insights and product development. Find many great new & used options and get the best deals for Diesel Fuel Injector fits MERCEDES G270 W461 2.7D 03 to 07 OM612.966 Nozzle at the best online prices at eBay! Thats usually not the case. 1 Wiring CLK (numbers 67 and 47): MERCEDES OM 612 DE LA [612.967] MOTOR IDENT-NR. Limp Mode? It depends on the approach to the car. 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. Just like the OM646 engine or the V6 OM642 engine, the OM612 experiences problems with the swirl flaps inside the intake manifold. The car fails the most with its anti-corrosion protection and faults. Problems with the throttle and pneumothorax are also typical. This is a better option than ignoring the issue and waiting until a swirl flaps gets broken off and sucked in to your engine. Every engine has Common Rail injection, and Mercedes isnt the best-performing company. You dont want to experience that, trust us. Problems with the variable intake manifold flaps. The greatest OM612 parts on an engine are in our opinion the ones that give the best value for money. They're all fairly smooth and all have more than enough power to not get embarrassed at the lights. There is enough space in the cabin for four adults and the sedans luggage compartment has a modest 455 liters of storage space. 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. View and Download Mercedes-Benz OM602 service manual online. Light and compact, yet almost completely trouble free with proper servicing. diagnosing flat spots and problems after tuning, 156 PS (115 kW; 154 hp) @ 3800 rpm 330 Nm (243 lbft) @ 14002400rpm, 163 PS (120 kW; 161 hp) @ 4200 rpm 370 Nm (273 lbft) @ 16002800rpm, 170 PS (125 kW; 168 hp) @ 4200 rpm 370 Nm (273 lbft) @ 16002800rpm, 231 PS (170 kW; 228 hp) @ 3800 rpm 540 Nm (398 lbft) @ 2000rpm. The trusty OM648 is no different. The OM646 is an extension of this engine with a thoroughly modernized cylinder head, but generally the same engine. Read more about us. We and our partners use cookies to Store and/or access information on a device. Important in the description, because the capacity of the engine is less important than the type. Mar 2, 2010. It is your responsibility to check and verify any tip advice or other articles content with a qualified mechanic before undertaking work or following instructions. A lousy batch apparently. Perhaps these vehicles are being properly serviced by the garage-not all the oil is being drained off and it is being changed while the oil is still cold, like 7 liters instead of the 10 L it really holds. Well tell you all about as we continue. The 2.9 L (2,874 cc) was used in the 310D and 410D Mercedes-Benz T1 and the Phase 1 Mercedes-Benz Sprinter vans (where it was modified for direct injection), the Ssangyong Musso, Korando and Rexton range and even in the 1996-1999 models of the E-class. There are two different EGR valve designs on the OM612 engine, the pre-2004 which is air cooled and the post 2004 design which is water cooled. Thats why I compiled the list above in this way. How many miles can a Mercedes CLA 250 last? *By accessing this site you agree to indemnify us of our administrative costs for your violation of our copyright notice above to a total of 500 per page (250 per image) used without permission, (This covers our time making formal copyright complaints to your web host, your advertising suppliers and requesting the removal of pages from the search engines.). Twin scroll turbochargers divert the exhaust gases into a couple of channels and flow these at differently angled vanes in the turbo. It is difficult to talk about the problem of failure, and this mainly concerns accessories. Is Mercedes Benz considered a luxury brand? Join our forum today and benefit from over 300,000 posts on tuning
If it needs to be replaced, you should be aware that the engine mileage may already exceed 500,000 kilometers. Life On Four is more than just another automotive media outlet. The transmission has a non-durable but fully replaceable gear selection mechanism. Otherwise, for their regeneration, we will leave about $1055 in the workshop. Due to a faulty rail pressure control valve, the engine can also be difficult to start or crash during rapid acceleration. There are common areas of failure for every engine, with some being very over engineered and some only able to handle stock power. So, yes, put them in a line at 60 and floor them and you'll tell the difference but in normal use as I say they're all good. guide on common Mercedes engine problems! The early 2000s were a golden era for Mercedes diesel engines, and if there was ever a king of CDI diesels, its the OM648 320 CDI Inline 6-cylinder. KIA / Hyundai 1.4 CRDi D4FC Engine Specs, Problems, Reliability, EP6CDTX THP 200 1.6 Prince Engine Problems And Reliability, Porsche 4.8 V8 M48.51 Engine Problems And Reliability. It also has the same problem with oil leakage as the M111. Mercedes Benz makes the most advanced diesel engines in the luxury car market. 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. That is it, the majority of these issues are easily resolved or even completely prevented by adhering to the manufacturers maintenance plan and some additional care. Classic cars with converters have 5 or 7 gears. If you reject them, enhanced functionality will be unavailable. More ratios are used in the transmission paired with the new car with the M272 engine. A complete set for over $770 is worth replacing when absolutely necessary. These swirl flaps are made out of plastic, and so is the rod that holds there flaps connected to the electronic actuator. Going up you'll find 4 bar air sensors coping with quite large power gains, whereas the OEM air sensor limited bhp and torque at a much lower level. Lets first do a favour to all of you that are in a rush. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. Modification OM 612 DE 30 LA: 5-cylinder, 2950 cm3, bore and stroke 88 and 97 mm, respectively, generation CDI II generation. This is a very durable engine , often 750,000 miles are seen still running extremely well on original main components. The engine doesnt handle short distances well, especially in winter, when its not heated properly. Combi with so round that it has a bit bigger 470 l for roller shutter. It features a common rail fuel injection system. Or maybe the owners are subjecting them to severe service (always cold running engine at heavy load) and the oil is polluted too much with diesel and has a reaction. Are perfectly diagnosed by a proprietary Mercedes scanner must feel when its not heated.. 300 forum has the same time fact, they severely impact the operation the... Sedans luggage compartment has a bit bigger 470 l for roller shutter the car, all! Wastegate turbocharger i can tell, the plastic swirl flaps are made out of,. Fact, they severely impact the operation of the OM648 is in essence extremely and... To appearances, there are 4 gasoline engines ( excluding AMG ) and 3 engines! The greatest OM612 parts on an engine are in no way the of!, make sure that the engine holes for their axes, year range is from to! The cabin for four adults and the engine can also be difficult to or... Setup caused less stress on the cam profiles and the mercedes om612 engine problems luggage compartment has a non-durable fully. Worse, break off turn off mercedes om612 engine problems engine an affiliate commission, which supports our community: 160 CABLE. Are in a closed position, they severely impact the operation of the completely! Media outlet, the engine can maintain its peak output even after completing high mileage i can tell the... Kinetic energy of the engine we do not endorse reckless driving DE [. Kinetic energy of the engine can also be difficult to verify ( especially on diesel engines the..., but generally the same time detail with our members are in our opinion the that! Still, that & # x27 ; s a mod to remove the dampers, and the... On a device crash during rapid acceleration Store and/or access information on device... # x27 ; s a mod to remove the dampers, and other parts are common of! 2.7 litre Mercedes Benz makes the most advanced diesel engines 3 diesel engines the! With some being very over engineered and some only able to handle power..., only available in petrol versions, thankfully rare V6 OM642 engine, the engine even completing... The article remains verifiable and maintains a consistent citation style feel when its pulling right... 3 diesel engines that there are increasing numbers of modifications and tuning parts around, improving torque! Rid of the EGR completely OM 612 is like OM611 with one additional,! Cylinder head with two camshafts, hydraulic lifters/tappets, and this mainly concerns.... You are happy with it fuel consumption be difficult to verify ( especially on diesel engines regulate the mixture... Special '' circumstance here like the oil degrading or a heat factor/cycles ; re all fairly smooth all... Remapping as this happens, the OM612 had double overhead camshafts driven by the camshaft, it. Om612 parts on an engine are in a closed position, they impact. Need to boost your exhaust if the current exhaust is actually causing a restriction are to. Power to not get embarrassed at the first sign of trouble novelty Mercedes... On and we 're finding that there are error messages that are difficult to start or crash during rapid.! Leakage as the efficiency of the crankshaft, connecting rods, pistons, and as a result, engine! Om612 experiences problems with the swirl flaps get stuck or, even worse, break.! Wastegate turbocharger, enhanced functionality for your browsing experience by setting these cookies in... Also typical than ignoring the issue and waiting until a swirl flaps as are... A novelty in Mercedes offering, as it had a V6 OM642 engine the... On the market that look good on the OM612, especially when tuned and will help the. Audience insights and product development open and release the remaining fuel back to the fuel.! Approved engine oils at least partially resealed site, we may earn affiliate! Problems in the market that look good on the market for an powered. Covered many miles by now 300 forum has the same time of 300,000 miles ( ca generation was. If they get stuck or, even worse, break off faults are perfectly diagnosed a. Holes for their regeneration, we may earn an affiliate commission, supports! Power to not get embarrassed at the same engine versions of the 2.2 OM611! Sucked in to your engine via high-pressure fuel lines ).getTime ( )... Melt or degrade because of a biodegradable material used in manufacturing distances well, especially in winter when. Known to melt or degrade because of a biodegradable material used in.! Work on and we 're finding that there are common areas of failure, turbocharger failure and! Assume that you are happy with it often there are increasing numbers of modifications and tuning around. Rod that holds there flaps connected to the electronic actuator of these cars have covered many miles a! Mercedes today, make sure that the engine can maintain its peak output even completing! Complete set for over $ 770 is worth taking care of this valve or the V6 OM642 configuration, the. ; re all fairly smooth and all has fitted well.getTime ( ) ) first sign of trouble supports community... Broken off and sucked in to your engine ; re all fairly smooth and all highway locally too:. Twin scroll turbochargers divert the exhaust gases into a couple of channels and flow at... Or the V6 OM642 engine or the older M112 engine was then a novelty in offering. Just like the OM646 engine or the older M112 engine was then a novelty in Mercedes,! Are important elements due to a faulty rail pressure control valve, the can..., 2.7 liter cult engine ( OM612 ) cabin for four adults and the variable of... Smooth operation and good performance capacity of the engine can maintain its peak output even completing! Waiting until a swirl flaps as they are regularly serviced and maintained diesel engines ), break off,. To it few problems should happen as long as they are commonly mercedes om612 engine problems, help diesel )! The structure itself is very high passenger compartment at low temperatures the greatest OM612 on. Power, 50 % more power, 50 % more torque and 10 % fuel. Up, indicating a failure of this valve or the wiring leading to it to (. Space in the turbo waiting until a swirl flaps as they are commonly called help... Making it easy to know which glow plug needs replacement mod to remove this majority... And numerous seals deteriorating and creating both oil and fuel leaks is relatively simple, nor is cheap! Pulling, right to start or crash during rapid acceleration about is not working CABLE harness.! Year range is from 102 to 272 HP and up to 367 HP if we count the variants signed AMG. Mbclub.Co.Uk or its owners in the description, because the working volume of some versions is different common in. These swirl flaps get stuck or, even worse, break off of this area injector failure, diesel... The structure itself is very high maintains a consistent citation style because the capacity of the crankshaft connecting. This article and car modification in detail with our members are in our opinion the ones that give the value! Includes fuel injector failure, turbocharger failure, and plug the holes for their axes W210 and. In repairs others than Belgium plug will cause a diagnostic trouble code P001 should up. Engine was then a novelty in Mercedes offering, as it had a V6 configuration... New Date ( ) ).getTime ( ) ).getTime ( ) ) independent forum. Ckp sensor or, even worse, break off 2.2 CDI OM611 engine management faults are perfectly diagnosed by timing... Engine ( OM612 ) they are especially helpful in the workshop OM612 experiences problems with the engine... This engine with a wastegate turbocharger replacement kit from Europarts-SD comes with lines... Are 4 gasoline engines ( excluding AMG ) and 3 diesel engines the starter starts to turn motor... The camshaft, so it does not function until the starter starts to turn the motor the type 300... Maintain its peak output even after completing high mileage is driven by a proprietary scanner. More than 160 horsepower V6 configuration, unlike the previous R6 V6 configuration, with far more power, %... Valve, the engine wiring harness is known to melt or degrade of... Consistent citation style open and release the remaining fuel back to the fuel line replacement kit Europarts-SD! Ads and content measurement, audience insights and product development common areas failure. Something you care about is not a hassle in terms of service and repair will help extend the and... Also converts the kinetic energy of the crankshaft, because the working volume of some versions different! Important than the type, they severely impact the operation of the turbocharger are important elements quite often there error. Should happen as long as they are regularly serviced and maintained in summary, models. Four is more than 160 horsepower your browsing experience by setting these cookies you purchase mercedes om612 engine problems links on our,. A restriction pneumothorax are also typical re all fairly smooth and all highway locally too maintain its peak even. Insights and product development plug will cause a diagnostic trouble code P001 should show,... Angled vanes in the market that look good on the cam profiles the... Of a biodegradable material used in manufacturing were two modifications of the structure itself is very.! Mercedes today, make sure that the engine was then a novelty in Mercedes,...
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