Just wondering what I should typically see for a valve stem wear pattern when using the stock stamped pedestal rockers ? Its on a pair of E7 heads with stock HO cam ?
I've been chasing a slight tick lately so I tried the sharpie on the valve stem trick (same as for a roller rocker) and actually run the engine for a bit. Shut it down and pulled off the rocker pair and found all the ink was cleaned off except for about 1/4 of the valve stem towards the intake (top) side.
I have pulled all the rockers and push rods previously and no real obvious signs of problems. The pre-load is set to about 3/4 of a turn which should be decent. Not sure, maybe its a lifter starting to go ? all else looks OK to me.
Any comments/suggestions ?
Thanks in advance.
Connect With Us