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Old 01-12-2019, 12:27 PM   #1
gulum1804
 
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Default Timing chain stretch....AGAIN!

Its really disappointing to see these engines with this cancer like issue that keeps popping up. Just when we think its over it just reemerges like the boogie man. Keep an ear on those timing chains yall.
V6 2015 120k. Some one should get on with a class action already.
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Old 01-12-2019, 01:49 PM   #2
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Default Re: Timing chain stretch....AGAIN!

gulum1804,
Interesting that you are experiencing "timing chain stretch".
Who does your maintenance......authorized MB/FL Sprinter dealer shop.....an independent Sprinter shop.... DIY?
What engine oil have you been using?
What oil and filter change mileage are you using? 10k......15K.......20K (like the manual suggests)?
Do you run your engine to redline (I.E. > 3800 RPMs) often? (Do you run @ > 3200 RPMs all the time)?
Do you use a Scan Gauge II (or similar) so you can tell when your transmission needs to be manually
downshifted? (I.E. do you lug your engine @ < 2200 RPMs or do frequent stop and go like deliveries).
I have not heard that "timing chain stretch" (beyond what the hydraulic timing chain tensioner can accomdate)
is any sort of a recurring problem that occurs frequently.
You may be the first person I've heard of with this issue so it would be interesting to discover how you
drive and maintain your Sprinter to see if there is something you might be doing that causes or contributes
to "timing chain stretch".
Your post indicates you may have had this issue previously......was it on the same OM-642 3.0 liter V6 engine,
and at what mileage did it occur.
I've done > 1/2 million miles with all 3 USA Specification Sprinter engines (OM-647 2.7 liter Inline 5 cylinder, 3 OM-642 3.0 liter V6
engines, and one OM-651 2.143 liter Inline 4 cylinder (now with 192,000 miles), all of them sometimes towing
at ~12,000 lbs. CGVW, and have had no engine internal issues.....ever.
Inquiring minds would like to understand this issue and decide if it's a common issue or something unique to the
way you drive your Sprinter.
Roger
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Old 01-12-2019, 02:04 PM   #3
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Default Re: Timing chain stretch....AGAIN!

As I have reported.
This engine suffers when high amounts of carbon particles are en trained in the oil and made much worse by operator neglect or sloppy serving methodology. Have a neglected engine and you are not likely to get more than 200,000 miles from a chain & sprockets.

The abrasive nature of carbon by the way scours out crankshaft bearing shells and most certainly the timing chain is not immune to abrasive wear.
But its good for business.
Dennis
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Old 01-12-2019, 02:55 PM   #4
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Default Re: Timing chain stretch....AGAIN!

Quote:
Originally Posted by lindenengineering View Post
As I have reported.
This engine suffers when high amounts of carbon particles are en trained in the oil and made much worse by operator neglect or sloppy serving methodology. Have a neglected engine and you are not likely to get more than 200,000 miles from a chain & sprockets.

The abrasive nature of carbon by the way scours out crankshaft bearing shells and most certainly the timing chain is not immune to abrasive wear.
But its good for business.
Dennis
My takeaway from your post is that improper oil filters, improper oil filter installation, and extended OCI, or poor quality oil is the likely cause.

A number of American manufacturers have had issues with gasoline engine cam chain wear in the last decade. The fix is generally to reprogram the oil change monitor to shorter cycles.
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Old 01-12-2019, 03:59 PM   #5
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Default Re: Timing chain stretch....AGAIN!

So, all the guys on here who have expressed skepticism about the 20k OCI are maybe right after all, and presently having a laugh.

This brings to mind a technical question for you.

Pre-def engines used EGR to reduce Nox, EGR pumps carbon into the oil, black as a bear even right after a change due to residual deposits in the crankcase. On my 07 with GDE tune, my oil is cream colored instead of black long after the oil change.

2010 plus uses DEF to eliminate Nox, so why do they still use EGR? Does it use less EGR?? Did they decide that reduced oil contamination due to reduced requirement for EGR warrants longer OCI??

One might also conclude this is from force of habit, or is it just to kill off the engines earlier on purpose???
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Old 01-12-2019, 05:00 PM   #6
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Default Re: Timing chain stretch....AGAIN!

This van is in our local shop rite now. Not my van. The owner stated he does 10k oil changes if not more and seems to be on the cheap side of maintenance.

I guess some people really think that these vans can run up to 15k 20k oil changes with the 0w30 or any oil for that matter. What a Bumber.
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Old 01-12-2019, 06:16 PM   #7
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Default Re: Timing chain stretch....AGAIN!

Quote:
Originally Posted by gulum1804 View Post
... The owner stated he does 10k oil changes if not more ...
More meaning? 12k... 15... 20k... or "more frequent"?

It is pretty tough to prove that the boilerplate for quite some time now, 10,000 mile OCI is detrimental. I won't argue that a 20k OCI may be excessive, but based upon forum history I'd not agree with 10k being a problem.

2015 MY failure.

Is it showing in a model year range? Was there a design change (are all part numbers the same as compared to earlier V6's)? Did MB change factory OEM suppliers? Maybe there was a bad batch of parts? (The early OM647 EGR failures and subsequent part recall comes to mind.)

We really don't have much data... yet.

vic
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Old 01-12-2019, 06:27 PM   #8
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Default Re: Timing chain stretch....AGAIN!

Quote:
Originally Posted by lindenengineering View Post
As I have reported.
This engine suffers when high amounts of carbon particles are en trained in the oil and made much worse by operator neglect or sloppy serving methodology. Have a neglected engine and you are not likely to get more than 200,000 miles from a chain & sprockets.

The abrasive nature of carbon by the way scours out crankshaft bearing shells and most certainly the timing chain is not immune to abrasive wear.
But its good for business.
Dennis
I make no apologies that I change my oil every 5,000 miles. Genuine MB filter and 5W-30 Castrol MB approved oil. I've been called a fool, wasteful, and an over maintainer.

But as long as I'm footing the bill that's what I'll continue to do.
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Old 01-12-2019, 06:45 PM   #9
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Default Re: Timing chain stretch....AGAIN!

The owner stated there were times they went up to 15k and also lost one engine in the process in another van. (I guess old habits dont change). If you take that in to consideration along with constant abuse and necklet what ells can be the out come.

Honestly this is the first time i saw this on a newer model sprinter. I have not seen a van with a timing chain issue past 2013 model year. That was until today.
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Old 01-12-2019, 07:07 PM   #10
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Default Re: Timing chain stretch....AGAIN!

Quote:
Originally Posted by gulum1804 View Post
Its really disappointing to see these engines with this cancer like issue that keeps popping up. Just when we think its over it just reemerges like the boogie man. Keep an ear on those timing chains yall.
V6 2015 120k. Some one should get on with a class action already.
So you want to sue someone because a van with 120,000 miles on it needs work?
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