Misfire Cycl 2 Tried about everything...
This is a discussion on Misfire Cycl 2 Tried about everything... within the General Help forums, part of the LSx Technical Help Section category; Originally Posted by 02blackz im goin thru the same prob!!??, i went to autozone to have it scanned and P0300 ...
04-07-2009, 04:43 PM #21
As long as you're using good quality high performance plugs and wires (I see you're using NGK and MSD, which are good) the problem most likely isn't with those components.
Definitely open the valve covers and check everything out. Pull the pushrods and roll them accross a glass surface (table is good) to see if they are bent. Inspect all the rocker arms for cracks or damage to the roller fulcrums. Check to make sure none of your valve springs are broken, either.
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