Mechanics

MERCEDES BENZ 380SL COMPRESSION PROBLEM

1982 Mercedes Benz 380sl • 90,000 miles

Vehicle will not start at proper timing setting and over advancing timing to 60-70 degrees will start. Remove valve covers and no# 1 spark plug, using a bore scope, verify tdc and see both machined lines on camshafts in correct position. Open exhaust system before cat convertor with no change. Whats next or what I miss?
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Bfalk06
October 20, 2012.



What about the crank mark?

What is the compression?

Roy

ASEMaster6371
Oct 21, 2012.
Used bore scope to verify proper timing mark alignment for crankshaft, compression was 125 psi, the only thing I may due is to install dial indicator to moniter intake valve opening/closing to specs on cyl no# 1 I thought it prob jumped timing at first but really cant prove it. It has a double roller chain and guides look good. Not sure after that what I missed

Tiny
Bfalk06
Oct 21, 2012.