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Old 08-04-2008, 08:28 AM
genEus genEus is offline
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Knock from the engine! :(

I put in new LIM gaskets and when I started putting stuff back together I broke a rocker arm bolt when I accidentally overtightened it. I managed to wiggle out the broken bolt from the head and replaced the rocker arm with a brand new one I got from the dealer.

I finally put everything together and the car started up instantly. But now there's a knocking sound from the engine!

I opened the valve covers and checked and repositioned all the push rods and retigthened all the rocker arms one by one, running the engine after removing each one to try to isolate a rocker problem but the knocking continues!!

The knocking is rhythmic and moves in frequency with the engine RPMs... What can it be? Mind you, there was no knocking before I did all this, so I'm having a hard time believing it could be a collapsed lifter or something of the sort that just happened to coincide with the LIM repair... I'm pretty sure that I caused it but I can't think of what it could be.

What should I check next?

Thanks for any advice...
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