PeachParts Mercedes-Benz Forum - View Single Post

eatont9999 · #3 03-29-2013, 06:25 PM

Quote:

Originally Posted by cho

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could be injection timing,some slack in chain,but aligning marks is not
the ultimate test. to be sure you have to go 2mm dial gauge.

engine has to be 30C for compression test .....

edit: often cause of white smoke is inadequate heat also
do you have white smoke idling on start only or..... ?

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I know the dial gauge method is the most accurate way. What I am looking for is a major offset from factory spec; something that would be able to cause the problems I am seeing.

The smoke exists more when cold but still visible and smells the same at operating temp. The car usually reaches max operating temp at 90C or the next mark up from the 80C designation. I also see a little more crank time to start the engine during cold weather.

Given my experience with other Diesel engines, I am about 95% sure that my issue is caused by injection timing retardation. All the symptoms add up. None the less, I am going to eliminate all other possibilities first before I start messing with IP adjustments.