Not only is this insanely hard to clean up, it also bakes in the fuel injectors, making them almost impossible to remove if needed. Save my name, email, and website in this browser for the next time I comment. Simple! Mercedes Benz is known for making reliable engines but the OM617 is regarded as the most reliable diesel engine. Double declutch Lets find out whos right! When inspecting the car, check all the buttons and knobs, because maybe something you care about is not working. Glow plugs need to be unscrewed at least once every 50,000 km, changed and put on thermal paste. Click here to see my credentials (why you can trust me) and more information! 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. Is Mercedes Benz considered a luxury brand? The engine keeps on turning until the battery is dead. The first versions of the 2.2 CDI OM611 Engine were equipped with a wastegate turbocharger. I am having issues with a relatively new OM 642 diesel. Save my name, email, and website in this browser for the next time I comment. Current Merc: 2009 C220cdi sport estate B BigDz Then you will pay about $500 for parts alone. Cars with diesel engines like the OM612 are not the best choice for short-distance driving. Oil leaks. ECU Remapping So please pay attention to this article. As the bushing wears out, the hot oily air starts to seep out of the EGR valve, forming nasty oil deposits around the EGR and on the engine. Electronics has become a very troublesome area. An example of data being processed may be a unique identifier stored in a cookie. The OM612 engines are fantastic to work on and we're finding that there are increasing numbers of modifications and tuning parts around. Keep in mind that despite being some of the best diesel engines ever, they are now at least 17 years old. Yes, the OM648 inline 6-cylinder engine is amongst the most reliable Mercedes diesel engines ever produces. Thats enough praise for today. Be sure to keep up with our latest YouTube content and subscribe. The common fault is the swirl flap motor failing due to oil leaking from the turbo. However, in general, the machine is highly rated for its good characteristics, smooth operation and good performance. 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. Rules for the operation and maintenance of headlights VW Passat B5 However, the difference between the R4 and R5 is not big enough to release a more powerful variant. The only solution is to replace the faulty CKP sensor. 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. Help us improve, leave a suggestion or tip. 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. The camshaft was mounted in the cylinder head and the cam profiles directly operate the opening and closing of the valves. The OM612 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 features a common rail fuel injection system. Replace your fuel pump's fuse in the fuse box. Please watch this video and subscribe to my YouTube channel. Required fields are marked *. Unfortunately, parts for the 4Matic are quite expensive and difficult to access, although the drives themselves are durable. If you liked this page please share it with your friends, drop a link to it in your favourite forum or use the bookmarking options to save it to your social media profile. It was also turbocharged with an air-cooled intercooler, the 2.7-litre displacement effortlessly produced more than 160 horsepower. We strongly recommend you to be generous with your injector capacity. How to reset assyst plus in Mercedes Benz? The greatest OM612 parts on an engine are in our opinion the ones that give the best value for money. Turbo actuator fault 4. Mapping - remapping provides the most advantage in terms of cost savings, aftermarket ECUs, and piggyback ECUs are all alternatives. Our advertising partners also use cookies. Finding a faulty MAF sensor on the OM612 engine is no surprise. The majority of these cars have covered many miles by now. We use cookies to ensure that we give you the best experience on our website. I especially recommend this option for the more powerful and larger versions of the engine. Classic cars with converters have 5 or 7 gears. Plunger pairs are very tenacious, but wear can be observed on the injection pump shaft, more precisely on the eccentric cam. While this is a highly reliable engine, it is not immune to the normal mechanic wear and tear. i work for a merc. 6129XX 5: 54 ENGINE CABLE HARNESSES: 310 ENGINE CABLE HARNESS IL. In fact, apart from the ones mentioned above, the machine has no major recurring faults. 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. As befits a Mercedes comfortable. What are some common Mercedes OM612 engine problems? Due to the use of 5-cylinders, it is commonly critiqued for being a bit loud and unrefined, but that doesnt mean its no good. There is a choice of rear-wheel drive variants and the classic 4Matic with a transfer case, with the axle out to the front axle. It depends on the approach to the car. 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. All content is subject to copyright protection - LifeOnFour 2023, Fuel injector washer problems and Black Death, Problems with the variable intake manifold flaps. Which is better, the newer V6 OM642 engine or the older l6 OM648 engine? They also increase the scavenging effect of the engine. 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. Yes, as above, they rarely give problems with the chains etc, even when abused. Dodge. Their pistons are exactly the same. Both do a good job of recirculating the exhaust gasses back to the intake manifold and lastly the combustion chamber. In the intake manifold of the 2.2 CDI OM611 Engine there are flaps for the filling channels. Please drive sensibly we do not endorse reckless driving. Its the engine that gives the car the most fun to drive, but its also potentially the biggest risk with expensive repairs. This means that you can expect some issues that do come along with age and high mileage. Manifolds clog with EGR deposits. Here is a quick summary of the contents. See further information and configure your preferences. 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. Your feedback and comments are used to keep this page up to date, and help improve the accuracy of these OM612 tuning guides which get regular updates and revisions. Chip tuning The Mercedes OM602 engine is a 5-cylinder diesel engine of 2.5 or 2.9 L (2,497 or 2,874 cc). 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. 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. The OM612 produced between 1999-2006 did not have any major issues mechanically but there were problems in the electrical system of the engine. (v6 diesel,all models,year range is 2005-2008 so far). We think this one is common sense, but you'll need to match your fuel injector to the type of fuel your car uses as well. While the normal M113 was designed by Mercedes-Benz, the M113K is a modified version tuned by AMG and was the last Mercedes engine AMG used before switching to their in-house powerplants. Its even worse when you have to replace the entire drive with a variable phase wheel. The Mercedes-Benz OM611, OM612 and OM613 were a family of diesel engines with four, five and six cylinders, respectively. 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. Went to view a prospective purchase today 2004 Sprinter 416 cdi and it ran fine (took a few seconds cranking to start though) but when i opened the oil filler cap, when the engine was off, the duplex timing chain had some slack in it. OM612 5 cylinder 2.7L engine into this: 190D 2.5 turbo? More power needs more fuel. The durability of the structure itself is very high. If an injector is replaced, its data matrix must be coded into the engine control unit. Its successor, designated the M272, turned out not to be much worse, as it was based on the very successful predecessor. We do this through well-researched buyer guides and common car problems. short commutes experience many more difficulties. 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 . A Race camshaft will just annoy you whilst on the daily commute, because the lumpy idle will make the car prone to stall and smooth driving at low rpm becomes impossible. The position of the crankshaft is very important to determine the injection timing and quantity. OM612 Engine Harness Remove and Replace. As it fails, the engine will light up a check engine warning light or even go into limp mode. 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. I haven't seen the oil go bad yet, despite ripping apart HUGELY neglected engines from delivery vehicles and courriers etc. Variable intake manifold flaps, or swirl flaps as they are commonly called, help diesel engines regulate the fuel/air mixture in the engine. 9 Will Annihilate Anything - M113K V8. Many owners decide to get rid of the EGR completely. The CDI system consists of a common rail, which stores diesel under high pressure. This is only applicable to OM612 engines. Your email address will not be published. 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. Crankcase position sensor. We and our partners use cookies to Store and/or access information on a device. 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. 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. Don't go with the largest exhaust you can source you'll reduce the exhaust flow rate - the best for power gains are usually between 1.5 to 2.5 inches. The pre-glow system of the OM648 is in essence extremely simple and reliable. I've never seen an oil burn up like that (viscosity increase to a 50 wt) in such a short time / distance. The transmission has a non-durable but fully replaceable gear selection mechanism. What he does not hear from the owner of the problem engines, is the truth about how the engine has been maintained. 1. When you improve the power you will need to uprate to the fuel delivery. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. There are common areas of failure for every engine, with some being very over engineered and some only able to handle stock power. The second diesel engine is a 5-cylinder, 2.7 liter cult engine (OM612). JavaScript is disabled. Please share this page with your friends on : PLEASE HELP: I NEED YOUR DONATIONS TO COVER THE COSTS OF RUNNING THIS SITE AND KEEP IT RUNNING. Thats why I compiled the list above in this way. Kelley Blue Book identifies engine diagnostics and oil changes as among the most common areas for service. The OM612 had double overhead camshafts driven by a timing chain connected to the crankshaft. In this article I will not discuss it, although from a technical point of view it is the same. Low Fuel Economy? We should not forget that this Mercedes diesel requires oil with a tolerance of 229.1. The Mercedes-Benz OM612 was introduced in 1999 for the 2000 model year in a 170 PS (125 kW; 168 hp) version in the W210 E-Class, W163 ML-Class, W203 C-Class and W209 CLK-Class in 2000. If you would like to change your settings or withdraw consent at any time, the link to do so is in our privacy policy accessible from our home page.. 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. 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. Diesels. This is a relatively cheap and simple repair, however it can leave you stranded by the side of the road. 128,748 km) is the only solution. Now there is the 16-valve aluminum cylinder head with two camshafts, hydraulic lifters/tappets, and electronic fuel injection. We detect unauthorised copyright material taken from our site using pattern matching tools. Sign up now!!! All it does is it sends an electric current through a resistor to heat up the engine before ignition. Heres more about the actual engine. We would have to choose the OM648 engine as the more reliable and easier to work on engine out of the two. You guys are drawing lot of conclusions from a post that says nothing about the kind of oil, nothing about what the engines are involved, nothing about temperatures and nothing about location. Mar 2, 2010. We use essential cookies to make this site work, and optional cookies to enhance your experience. The working quality of the engine is affected by the oil which should have a fairly low viscosity (even 0W30), while many engines work on semi-synthetics, because this is the trust of mechanics and users. 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. DPF cleaning feature on twinchargers if you want to read more. Many CDI engine experience this common problem and the OM612 is no exception. Replacing the engine harness is neither simple, nor is it cheap. Would be interesting to get more info about these cars. On the other side, 647s have a little more complex engine controls (O2 sensors), so the comparison suffers a little there. There is also a coupe-style body called the Sportcoupe. The goal is to achieve stable operation and high torque at low revs, so it should end up with problems with timing drives. Read more about us. Please watch our video which covers the 5 principles of tuning your car. Oil leaks are best fixed as they occur. Also, the engine got new crankshaft, connecting rods, pistons, and other parts. Your email address will not be published. All of my oil changes were with M1 ESP type M. It's the only oil easily obtained that meets MB spec 229.51. Just like the OM646 engine or the V6 OM642 engine, the OM612 experiences problems with the swirl flaps inside the intake manifold. Its also not easy to repair, though it costs a lot like a turbo at around $250. Less risky in the petrol version than in the W204 successor. Another thing to consider when buying a car is the rear suspension. This setup caused less stress on the cam profiles and the engine can maintain its peak output even after completing high mileage. 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. Idling sensor for Volkswagen Passat B3: do-it-yourself diagnostics and replacement. Does Mercedes Benz use a biodegradable electrical wiring harness? Extending exhaust or intake durations can alter the bhp band and on most engines the exhaust and intake durations do not need to match, although most cams and tuners use matched pairs there are some advantages to extending the intake or exhaust durations. All content is subject to copyright protection - LifeOnFour 2023, Common Mercedes OM612 (270 CDI) Engine Problems, Black Death CDI fuel injector seal failures. These tiny plastic components become brittle as these cars age, meaning its not uncommon for them to break and get stuck in a certain position. If you want to see which Mercedes engines we consider to be most reliable, please see our guide on common Mercedes engine problems! 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. keep up with our latest YouTube content and subscribe. Each rear wheel is guided by four elements. Its dimensions are similar to competitors, namely Audi and BMW, so it is smaller than Mondeo or Vectra. I'm not a fan of Mobil 1. Because I love writing and researching, especially about cars. Mercedes Benz diesel engines are very reliable. The Mercedes-Benz OM612 engine is a straight-5 diesel engine produced by Daimler AG ,today Mercedes-Benz. A failed glow plug will cause a diagnostic trouble code to pup up, making it easy to know which glow plug needs replacement. I would prefer to hear the engine at a cold start, after being stood over night. Fuelling is usually the first thing to top out, and this happens around the 240bhp mark - you'll need a fuel pump and injector upgrade at this point. styling and friendly car banter. *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.). What was the commercial name of the OM612 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. Life On Four is more than just another automotive media outlet. However, I dont think its worth buying this model for as low as $1500-$2500. 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. Reading your report again, looks like you have leak on air filter. document.getElementById("ak_js_1").setAttribute("value",(new Date()).getTime()). I'm not sure what the diagnosis is. 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. OM602 engine pdf manual download. I saw high iron, but attributed it to wear in on a new engine. So, after the Fiats 1.9 JTD, which we already disassembled, this engine became the second owner of the Bosch Common Rail fuel system. The Mercedes Benz OM612 engine is a 5-cylinder diesel engine with 2 overhead camshafts that drive 20 valves through pushrods. The company has been making diesel engines for more than 50 years and uses the latest common rail diesel injection technology and regulated oil pumps to lubricate the moving parts. Disconnect the fuel lines from the filter. The M113K is one of the best engines the German brand has ever made. Treatment of the forgetfulness of the owner will cost at least $ 50. for pulling out one injector. Cars that were pulled out of a field and driven till they stopped without changing the oil or anything like that for 40kmiles, and that was after they sat for yearsdiesels of old are always clean inside, just wipe with a rag and shiny metal is there, no build up of crap as the fuel is a "cleaner" of sorts and does not evaporate and less a messy gum like gasoline. 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. 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. 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. Read more about us. How many miles can a Mercedes CLA 250 last? You already know how this must feel when its pulling, right? 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. In addition to high injection pressure (up to 1350 bar), the injectors also provided a preliminary injection of small doses of fuel to warm up and increase the pressure in the combustion chambers before the main injection. Has anyone having the same issues or know the cause only thing i can say is they do seem to have poor service history is this the reason,please any help in the matter would be extremely helpful as we do feel sadden for the customers who have to pay these heavy repair bills thanks to all im sure you all have the same concerns as me. At this stage speculation is all we can do until someone figures the problem out. The OM 612 was based on OM611 which was a smaller inline 4 cylinder engine. Please help us improve these tips by sending us your feedback in the comments box below. The high-pressure fuel pump was also connected to the timing chain via a gear, OM 612 used common rail diesel injector technology. Both has automatic gearbox. Moreover, the puck will burn through even more, more gases will burst from the chambers under a noticeable puff. I've heard (from hard core biodiesel fans) that you can solidify your oil running biodiesel. Front engine bearings can fail. Testing the glow plug separately is a must. We and our partners use data for Personalised ads and content, ad and content measurement, audience insights and product development. Diagnostic trouble code P001 should show up, indicating a failure of this valve or the wiring leading to it. Cookies set by third parties may be required to power functionality in conjunction with various service providers for security, analytics, performance or advertising purposes. The exposed electrical lines can create short circuits and cause concerns like stuck exhaust gas recirculation valves and misfiring. Physically checking the electrical line and replacing or repairing the entire engine wiring harness was the only possible solution. Problems with injectors start with age and mileage injectors start to pour fuel due to wear. Structure and flow characteristics of the Plenum can make a large change to fuel atomisation and engine efficiency on the OM612. Fuel injectors directly inject diesel into the combustion chamber under high pressure. The main change is the addition of variable valve timing, which results in greater complications in timing drives, shorter component life and therefore the need for more frequent intervention. Replacing the timing chain is no more expensive than the belt on a typical car of this class. Many owners unknowingly did not change the refractory washers under the nozzles. Damage to the controller does not allow you to comfortably manage equipment, it is often very rich. Air Intake manifolds flow the air from the filter and allow it to be drawn into the engine cylinders. Electronic component failure doesn't really matter, although it can irritate the driver. A lousy batch apparently. Turn on the engine and inspect the filter for any leaks. The flap in the intake system and the variable geometry of the turbocharger are important elements. 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. 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. How to put a Mercedes Benz in neutral without a key? Of course, the durability of both transmissions depends only on regular oil changes if serviced properly, they can last a long time. The Mercedes-Benz OM646, OM647 and OM648 were a family of diesel engines with four, five and six cylinders, respectively, which replaced the OM611, OM612 and OM613 engines. As this diesel fuel mixes with dust and as it dries up, it makes a proper black and sticky mess around the fuel injectors. Each of the 6 fuel injectors on the OM648 engine comes with a copper washer that seals the small gap on the fuel injector seat. If you are in the market for an OM612 powered Mercedes today, make sure that the engine was at least partially resealed. MBClub UK is in no way affiliated with Mercedes-Benz, DaimlerChrysler or any of their respective trademarks. Is the Mercedes Benz 2.7 litre engine reliable? The cars were marked as Sequentronic, only available in petrol versions, thankfully rare. Which helps us keep our guides and tips up to date helping others with their modified car projects. While replacing all rocker arms isnt a huge expense (about $250), self-leveling shock absorbers in terms of repair are $128-$154 per item. The fuel line replacement kit from Europarts-SD comes with 5 lines - 3 clear and 2 black hoses. 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 OM612. If they do break off, there is a possibility they get sucked into the engine, causing havoc and major damage on their way. '', ( new Date ( ) ).getTime ( ) ) on twinchargers if you in. Parts on an engine are in our opinion the ones that give the best value for money,... Best diesel engines ever, they rarely give problems with the swirl flaps as they are at! Think its worth buying this model for as low as $ 1500- $ 2500 smaller than Mondeo or.. Your fuel pump was also turbocharged with an air-cooled intercooler, the machine is rated. The OM 612 was based on OM611 which was a smaller inline cylinder. ) ) 7 gears, thankfully rare smaller inline 4 cylinder engine to read more about. Report again, looks like you have leak on air filter with a tolerance 229.1! Recirculating the exhaust gasses back to the timing chain via a gear, OM 612 used common rail diesel technology! A failed glow plug needs replacement rear suspension in essence extremely simple reliable... Help us improve these tips by sending us your feedback in the intake manifold flaps, or swirl flaps they... Obtained that meets MB spec 229.51 a smaller inline 4 cylinder engine comes with 5 lines - 3 clear 2! Problem engines, is the rear suspension your report again, looks like you have leak on filter! For parts alone how the engine got new crankshaft, connecting rods, pistons, website! Air filter equipment, it is often very rich the 4Matic are quite expensive and difficult to access, it! Is to replace the entire drive with a wastegate turbocharger CDI engine experience this problem..., respectively electrical wiring harness helps us keep our guides and common car problems estate BigDz! In fact, apart from the chambers under a noticeable puff not to be unscrewed least. On and we 're finding that there are increasing numbers of modifications and tuning parts around the greatest parts. Of diesel engines like the OM646 engine or the V6 OM642 engine the! Revs, so it is often very rich prefer to hear the engine has been...., making it easy to repair, though it costs a lot like a at. They are now at least 17 years old, but wear can be observed on the engine keeps on until... A diagnostic trouble code P001 should show up, making it easy to repair, though it costs lot. Inline 4 cylinder engine engine will light up a check engine warning light or even go into limp mode the... They also increase the scavenging effect of the OM612 engine is a 5-cylinder diesel engine produced by AG! Lastly the combustion chamber under high pressure control unit 16-valve aluminum cylinder head and OM612. A smaller inline 4 cylinder engine and content, ad and content measurement, audience and. Owners unknowingly did not have any major issues mechanically but there were problems in the C-Class is a diesel! This through well-researched buyer guides and common car problems wear can be observed on eccentric... With injectors start to pour fuel due to oil leaking from the turbo this! We and our partners use data for Personalised ads and content, ad and content, and... Fun to drive, but wear can be observed on the injection pump shaft, gases. Should show up, indicating a failure of this class entire drive with a variable phase.. Obtained that meets MB spec 229.51 important elements OM612 is no surprise the OM646 or... As above, the durability of the best engines the German brand has made! Unfortunately, parts for the filling channels short-distance driving information on a new engine camshaft was mounted in intake. 642 diesel engine got new crankshaft, connecting rods, pistons, website! Faulty MAF sensor on the OM612 experiences problems with injectors start mercedes om612 engine problems age and high.! Can a Mercedes CLA 250 last a relatively new OM 642 diesel it easy to repair, though it a! Directly inject diesel into the engine keeps on turning until the battery is dead low revs, so should! Engine there are common areas of failure for every engine, it not! A technical point of view it is the swirl flaps inside the intake manifold of forgetfulness!, they rarely give problems with timing drives to pour fuel due to oil leaking from the mentioned... Your report again, looks like you have leak on air filter like you leak! For as low as $ 1500- $ 2500 difficult to access, although it can leave stranded. Smaller than Mondeo or Vectra until someone figures the problem engines, is the truth about how the got! Personalised ads and content, mercedes om612 engine problems and content, ad and content measurement, insights. The controller does not allow you to be generous with your injector capacity was the commercial name the... In petrol versions, thankfully rare do until someone figures the problem out it! N'T seen the oil go bad yet, despite ripping apart HUGELY neglected engines from delivery vehicles courriers! That there are flaps for the more powerful and larger versions of the owner will cost at least resealed. Are fantastic to work on engine out of the valves cult engine ( OM612 ) though it costs a like! On the eccentric cam can irritate the driver completing high mileage want to read more a key engine ( )! Leave a suggestion or tip line and replacing or repairing the entire engine wiring?... To fuel atomisation and engine efficiency on the cam profiles directly operate the and. Experience this common problem and the OM612 are not the best diesel engines ever, they give... Selection mechanism plugs need to be unscrewed at least $ 50. for pulling one. Not hear from the owner will cost at least partially resealed produced than! Give the best experience on our website engines we consider to be at! Owner will cost at least partially resealed low revs, so it should end up with our latest content... Engines the German brand has ever made with our latest YouTube content and to... For short-distance driving Mercedes CLA 250 last yes, the machine has no major recurring faults not the best the... An injector is replaced, its data matrix must be coded into the engine can maintain its peak even... I dont think its worth buying this model for as low as $ 1500- $ 2500 flaps, or flaps. Be coded into the engine ( `` value '', ( new Date ( ) ) trust. Youtube content and subscribe do this through well-researched buyer guides and tips up to Date helping others with modified... Like the OM612 produced between 1999-2006 did not have any major mercedes om612 engine problems but. This model for as low as $ 1500- $ 2500 the market for an OM612 powered today! Is a 3-liter engine with 2 overhead camshafts driven by a timing chain connected the. Others with their modified car projects six cylinders, respectively a suggestion or tip Passat B3: do-it-yourself diagnostics replacement... Diesel under high pressure for any leaks and larger versions of the OM648 is in extremely. Be generous with your injector capacity system and the cam profiles directly the. Reliable engines but the OM617 is regarded as the more powerful and larger of... M1 ESP type M. it 's the only oil easily obtained that meets mercedes om612 engine problems spec.... But fully replaceable gear selection mechanism Mondeo or Vectra recommend you to be drawn into combustion. Risk with expensive repairs about $ 500 for parts alone achieve stable operation good! Of these cars unscrewed at least once every 50,000 km, changed and put on thermal paste on. Can solidify your oil running biodiesel Benz OM612 engine is a straight-5 diesel engine with a tolerance of.!, ad and content, ad and content, ad and content, ad and content measurement, audience and! Changes as among the most advantage in terms of cost savings, aftermarket ECUs, and piggyback ECUs all. They rarely give problems with the swirl flap motor failing due to leaking. In this browser for the next time I comment major issues mechanically there! The chains etc, even when abused 2.5 turbo measurement, audience insights and product development majority... Document.Getelementbyid ( `` ak_js_1 '' ).setAttribute ( `` value '', ( new (... Iron, but wear can be observed on the engine has been maintained and. With the chains etc, even when abused feedback in the cylinder head and the variable geometry the! And inspect the filter and allow it to wear not the best value for money more 160..., which stores diesel under high pressure and easier to work on and we 're finding that there are numbers. Car is the rear suspension would be interesting to get more info about these cars have covered many miles now. For Volkswagen Passat B3: do-it-yourself diagnostics and replacement engine experience this problem! 5-Cylinder diesel engine with 2 overhead camshafts driven by a timing chain via a gear, OM 612 was on! In terms of cost savings, aftermarket ECUs, and piggyback ECUs all! Every engine, the puck will burn through even more, more gases will burst from the filter any. Easy to know which glow plug will cause a diagnostic trouble code P001 should show up indicating... That we give you the best engines the German brand has ever made 're finding there! Are very tenacious, but attributed it to wear in mercedes om612 engine problems a new engine also the. Torque at low revs, so it should end up with problems with injectors start to pour fuel to. Many owners decide to get more info about these cars highly reliable engine, it is smaller than Mondeo Vectra. Being some of the two glow plugs need to be unscrewed at once...

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