Quote:
Originally Posted by rowdie
I doubt it jumped time. The tolerance is so close that the valves would most likely hit the piston.
You can check cam alignment by removing both valve covers. Line up the right cam (US driver side) mark and compare with the left. They should be close. Ideally they should both align. Then look at the timing marks on the balancer. More than 10 degrees is out of spec. and a sign that the chain guides are worn, chain stretched, cam sprockets worn and weak tensioner.
Removing the timing chain cover requires either removing the engine or supporting the engine and dropping the front subframe.
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I have no idea where to look. Where can one find these marks they are supposed to line up with? and on the balancer according to what? I guess I should open her up.
what I really don't understand is why an OM617 can run over 500000 miles with same chain and guide rails and these 450's can't??? I bought the car as most people said "bulletproof engine" but that appears not quite to be the case?