2012 Mercedes-Benz C250 1.8L TGDI - P034062 - Cam Adjuster Repair

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Originally Posted by ford46guy
86K wow I really appreciate my Lexus now. I never heard of a phaser/timing failure on the forum. That job is at least 4k at an indy. Now a HPFP frown. What was the mode of failure? Sometimes they die because of extended OCIs and the cam wearing down. Maybe the first problem was due to that too.
I am not sure. But the HPFP has a $70 core charge so I probably should not take it apart. This particular HPFP design does not use a cam follower and the cam's are usually not an issue.
 
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How can these parts wear out so soon? Did they skip the heat treatment so they can save $10? It's almost like they design everything in CAD and have only 1% safety margin past warranty. The way the intake is routed I'm not surprised the hose crumble, and the wiring harness between 2 ignition coils.... Mitsubishi would be proud (at least the 2nd gen Eclipses was priced fairly). It's sad to see the 3 point star on such a piece of engineering.
 
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Originally Posted by Smokescreen
coffee Ill just stick with my low tech American iron and my reliable Japanese commuter...
Awesome; if only I had done the same...
 
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maple ridge, bc
Originally Posted by PandaBear
How can these parts wear out so soon? Did they skip the heat treatment so they can save $10? It's almost like they design everything in CAD and have only 1% safety margin past warranty. The way the intake is routed I'm not surprised the hose crumble, and the wiring harness between 2 ignition coils.... Mitsubishi would be proud (at least the 2nd gen Eclipses was priced fairly). It's sad to see the 3 point star on such a piece of engineering.
The explanation is pretty simple, my neighbour is the head mechanic at Vancouver Mercedes, PM me for his name and email if you like. Mercedes, BMW and VW among others have decided to make their cars "maintenance free", with 30, 000 km oil changes on the Sprinters, never change transmission and differential oils on virtually all models, and up to 20, 000 km OCI on other cars. The concept is simple, most cars are leased, so the "owner" does three or four oil changes and trades the car in, by which time in the opinion of my neighbour the engines, particularly the in the Sprinters , are "done". The car usually has 10-20 km of warranty left to make the vehicle marketable as a "factory maintained used car" He drives a new B250 turbo and changes the oil every 6 months or 8000 km, less than half what Mercedes sees as required. In his opinion if you do this the engines should last "forever" I do the same with my 2001 ML and i use a hdeo 15w40, the engine uses 1/2 liter every oil change
 
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Originally Posted by antonmnster
My n54 cam phasers are $80 and take 20 minutes. They're the only thing easy about that engine.
Are you thinking of the cam position sensor or solenoid sensor? The eccentric shaft actuator is about (OE)$200 or $400 (Genuine BMW) and a PITA.
Originally Posted by PandaBear
How can these parts wear out so soon? Did they skip the heat treatment so they can save $10? It's almost like they design everything in CAD and have only 1% safety margin past warranty. The way the intake is routed I'm not surprised the hose crumble, and the wiring harness between 2 ignition coils.... Mitsubishi would be proud (at least the 2nd gen Eclipses was priced fairly). It's sad to see the 3 point star on such a piece of engineering.
I wonder if automakers have to re-design a part just to avoid infringing on patents of other automakers and consequently sometimes the unique design is just inherently compromised.
 
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Originally Posted by 2004tdigls
.... my neighbour is the head mechanic at Vancouver Mercedes .... He drives a new B250 turbo and changes the oil every 6 months or 8000 km, less than half what Mercedes sees as required. In his opinion if you do this the engines should last "forever".
The former head mechanic at a BMW dealership in Edmonton advised me to do something very similar. Change the engine oil at half the interval suggested by the oil life monitor. (You change the oil but don't touch the monitor which keeps the other maintenance recommendations at the correct interval). It turns out his wife drives (or drove anyway) the same BMW as I do - which he described as one of BMW's more reliable recent products. I took that family connection as an endorsement of my 528i ownership. [Kind of like a physician saying, "if it were me, this is what I would do".]
 
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Originally Posted by 2004tdigls
Originally Posted by PandaBear
How can these parts wear out so soon? Did they skip the heat treatment so they can save $10? It's almost like they design everything in CAD and have only 1% safety margin past warranty. The way the intake is routed I'm not surprised the hose crumble, and the wiring harness between 2 ignition coils.... Mitsubishi would be proud (at least the 2nd gen Eclipses was priced fairly). It's sad to see the 3 point star on such a piece of engineering.
The explanation is pretty simple, my neighbour is the head mechanic at Vancouver Mercedes, PM me for his name and email if you like. Mercedes, BMW and VW among others have decided to make their cars "maintenance free", with 30, 000 km oil changes on the Sprinters, never change transmission and differential oils on virtually all models, and up to 20, 000 km OCI on other cars. The concept is simple, most cars are leased, so the "owner" does three or four oil changes and trades the car in, by which time in the opinion of my neighbour the engines, particularly the in the Sprinters , are "done". The car usually has 10-20 km of warranty left to make the vehicle marketable as a "factory maintained used car" He drives a new B250 turbo and changes the oil every 6 months or 8000 km, less than half what Mercedes sees as required. In his opinion if you do this the engines should last "forever" I do the same with my 2001 ML and i use a hdeo 15w40, the engine uses 1/2 liter every oil change
More frequent oil changes would probably help with timing chain wear, but I doubt it would have any effect on the lifespan of the cam adjusters. The mechanism which fails is internal to the adjuster.
 
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Maryland
Good post, good engine porn -and most of all, good work. Wish we had a "Thumbs-up" button. .... Funny, in another thread, some guy dropped in and said we all need to stop changing our oil so often. -And in this thread, the message being driven-home, is to change it at half the recommended interval. Looks like one size does not fit all... Extended OCI... Maybe some folks like to go there but, an OC cost me under 30 bucks, an oil analysis cost 30 bucks... A top-side engine repair will cost at least $1500. In my view of the world, I'll stick to changing the oil 2x a year and doing a UOA once every year or two.
 
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FL
What is the best available "Cam Adjusters" part number for this m271 turbo ?? We have; 2710501400 / 2710501500 New 271050140080 / 271050150080 Rebuilt 2710503347 / 2710503447 And who is a trusted source?? aftermarket brand ??
 
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Originally Posted by GeraldT
What is the best available "Cam Adjusters" part number for this m271 turbo ?? We have; 2710501400 / 2710501500 New 271050140080 / 271050150080 Rebuilt 2710503347 / 2710503447 And who is a trusted source?? aftermarket brand ??
"Best available" would be the latest re-manufactured ones from MB. The latest revisions are supposedly much more reliable. The aftermarket Chinese adjusters are ridiculously inexpensive so I would be extremely suspicious.
 
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FL
Here are the prices 2710501400 / 2710501500 New on ebay for $489.99 for the set of two. 271050140080 / 271050150080 Rebuilt. $537.98 plus $586.92 equals a total of $1124.90 from mboemparts.com 2710503347 / 2710503447 Cheap, although the latest part number. Also have not seen in Genuine Mercedes box with this P/N, only the 400 and 500. So rebuilt is better then new ?? Rebuilt's are also the most expensive!!
 
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Originally Posted by GeraldT
Here are the prices 2710501400 / 2710501500 New on ebay for $489.99 for the set of two. 271050140080 / 271050150080 Rebuilt. $537.98 plus $586.92 equals a total of $1124.90 from mboemparts.com 2710503347 / 2710503447 Cheap, although the latest part number. Also have not seen in Genuine Mercedes box with this P/N, only the 400 and 500. So rebuilt is better then new ?? Rebuilt's are also the most expensive!!
Rebuilt is the ONLY current option from MB. MB has not made new cam adjusters for this application for years, so any new ones you see are of an older revision (old stock) and should be avoided. The latest reman adjusters from MB are the most reliable ones available. You will also need the cam hold-down tool and the T100 socket. I can sell you mine if you are interested.
 
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FL
Originally Posted by The Critic
Originally Posted by GeraldT
Here are the prices 2710501400 / 2710501500 New on ebay for $489.99 for the set of two. 271050140080 / 271050150080 Rebuilt. $537.98 plus $586.92 equals a total of $1124.90 from mboemparts.com 2710503347 / 2710503447 Cheap, although the latest part number. Also have not seen in Genuine Mercedes box with this P/N, only the 400 and 500. So rebuilt is better then new ?? Rebuilt's are also the most expensive!!
Rebuilt is the ONLY current option from MB. MB has not made new cam adjusters for this application for years, so any new ones you see are of an older revision (old stock) and should be avoided. The latest reman adjusters from MB are the most reliable ones available. You will also need the cam hold-down tool and the T100 socket. I can sell you mine if you are interested.
Super, I think I now understand that the rebuilt ones are the most reliable ones. Thanks you have been a great help. My car, SLK250 was rattles when coasting in gear with the engine hot, (It has done this for 3 oil change periods, shop only had the 0w oil), I changed the oil to 10W-30 and that has resolved the noise so far. Engine has 44K miles. What do you advise ??
 
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Originally Posted by GeraldT
At what section of the 2710902029 pipe did it fail ?
About halfway down, near the pressure sensor. The pipe was very brittle. Failed cam adjusters will rattle during start up and cause a fault code. If it is rattling while the engine is running, you probably need a new timing chain. If yours is a 2012 or 13, you should consider installing all new updated components. Keep in mind that you also need a special tool to install the chain; you have to break the link and draw the chain thru the timing chain case.
 
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Originally Posted by GeraldT
There is a tool that I can install in where the Tensioner mounts, and it will give me a reading of the overall wear on the Chain and Rails. Febi 40125 Mercedes # 271 589 07 63 00 https://media.carooline.com/media/0151_DOC/SWAGSOLU40125_GB.PDF
That tool costs almost as much as the chain itself. Also, you have to unscrew the chain tensioner to install the tool. The chain tensioner on the 271evo engine is one-time use and is different than the tensioner used on the early 271 engines.
 
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FL
There are a couple of youtube videos showing how to reset the 271evo tensioner, so that it can be used again. The tool is for this later style tensioner.
 
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