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1991 Pontiac Grand Prix GT 2dr Coupe

1991 Pontiac Grand Prix
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February 5, 2013, 11:20 am

Brady H
 

Question: what will cause the rock arm to be loose on the exhaust

we did a valve job and the exhaust rock arm is very loose.


February 16, 2013, 9:27 am

Ron W
Expert Mechanic

Possible the lifter is sticking or if it is a push rod engine, you may have the incorrect length push rod installed. Some have different sizes for intake and exhaust.


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