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Re: Timing chain questions: Could it skip on old guides? Posted by Ari [Email] ![]() ![]() In Reply to: Timing chain questions: Could it skip on old guides?, Jason, Mon, 13 Aug 2001 10:23:06 Members do not see ads below this line. - Help Keep This Site Online - Signup |
In my opinion, if a chain is badly worn, so will be the chain guides. Can a badly worn chain guide allow the chain to jump a tooth? Possibly, but not likely.
If there is a flaw with a chain (for example, some bad links), I can see doing a roll-in job. If the chain is badly worn, and you're just looking to eek out a thousand more miles, then a roll-in makes sense. But I've never been a fan of it. Replacing just one worn part in a system doesn't make much sense to me.
But before that, I strongly suggest you inspect the chain before you start thinking replacement. I've never believed in replacing a chain by sound alone. For example, have you upgraded the chain tensioner? Your car would have come with the old style tensioner.
If I were in your position (and I have been), I would do a few things first. Upgrade the chain tensioner if it wasn't the new style. I would try an old trick - rotate the engine backwards a turn to reset the tensioner. If that doesn't do it, pull the valve cover - chances are, the valve cover gasket is leaking and needs replacement anyway. INSPECT the chain visually - turn the engine by hand and look at the chain and sprockets. Set the engine to TDC #1 and see if the marks on the cam line up with the marks on the head. If they do line up, then the chain isn't badly worn. Replace the upper chain guide (on the underside of the valve cover).
If the chain shows wear, and the alignment marks don't line up, then it's time for a new chain. Otherwise, enjoy the metronome under the hood.
good luck!
posted by 140.157....
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