• Tiny
  • Doc Roach
  • 1982 Mercedes Benz

Engine Mechanical problem
1982 Other Mercedes Benz Models 4 cyl Two Wheel Drive Automatic 200000 miles

My car was running just fine until I stopped for a cup of coffee. When I returned to the car it wouldn't start and hasn't run since. The mechanic said it needed a new motor. I don't see how that could be when it was running fine. He said there was no compression at all. Recently I was talking to a man that said he was a diesel mechanic. He said it might be the timing gear or chain because quite often old diesels kick back when they stop turning and that can cause a worn chain to skip. My question is would this cause the engine to have no compression at all? Thanks to anyone who might help me. Doc

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Sunday, May 18th, 2008 AT 8:27 PM

1 Reply

  • Tiny
  • mhpautos
  • Expert
  • 30,637 posts

Hi there,

it is easy to check the valve timing, but even if it missed a tooth, you will still have compressions. I would have the comps tested wet & dry, if there is no compression at all and the cam is not turning there will be a major issue with a broken crank shaft or a failed timing chain, you need to know exactly what has failed first.

Mark (mhpautos)

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Sunday, May 18th, 2008 AT 10:26 PM

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