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Old 03-17-2008, 09:45 AM
merc lover
Join Date: Dec 2007
Location: Ashford (new Heathrow)
Posts: 3
Intercooler leak?

Hi, I have an E320CDi, I have had a couple of experts look at my low power problem coupled with quiet a lot of smoke from the exhaust. The MAF sensor was changed by the first expert and now the 2nd expert is on the trail of a possible leak in turbo boost pressure, possibly caused by a leaking intercooler.
It looks like a major job to take it out. Anyone had this problem please?

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Old 03-17-2008, 09:47 AM
t walgamuth's Avatar
Join Date: Apr 2005
Location: Lafayette Indiana
Posts: 37,503
I really know nothing, but unless there is some physical evidence of damage to the intercooler it would seem an unlikely item to fail.

I think I would look for another opinion unless it were covered by warranty.

Tom W
[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.
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Old 03-17-2008, 12:24 PM
Senior Member
Join Date: Sep 2002
Posts: 2,933
I'm assuming you're talking about the in-line OM648, six cylinder, right? From your description it sounds like the EGR valve and/or engine mangement software could be to blame. This issue has been around for a few years, in fact it's covered in a Dealer Technical Bulletin. Make sure one of your experts checks it out before they start guessing, at your expense.

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