Quote:
Originally posted by peterhardie
Turns out the upper rails were grenaded. My mechanics can't believe the chain didn't slip a tooth: probably my wife's driving style. They couldn't find two of the rails at all, just a bunch of pieces down in the bottom, and the pins. SO, I dodged a bullet....
...except that the lower rails were broken, as a result of the lack of any other guides to stay that slapping chain. My guys say they have never seen lower rails that needed replacement, 12 years each in the MB repair business.
We got the car at 150K, and it ran smoothly to date. The noise at start-up wasn't much worse than noisy lifters, and never got real bad. We found lots of sludge in the heads and carbonned piston heads, which we attributed to the previous owner, as it has only seen mobil 1 and premium gas during our ownership. My guess is also that the timing can't have been perfect, given the state of affairs above.
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Peter,
So..... lots of sludge, carbon buildup, and atypical destruction of most rails. What kind of service did this beast get before you bought it? Sounds like it was neglected a wee bit...