piston slap
04-19-2005, 07:21 AM
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piston slap ihave an 01 trans am 5.7 and at start up it is loud then when it is warm it goes almost away my gm dealer wonts me to do an oil consumption test because before i put it away for the winter last year it had gone thru a liter of m1 oil within 4thous ks has anybody had this problem and did the noise go away when rebiult. mine still has 2 years of warranty
04-19-2005, 10:27 AM
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GM put new rings on my old engine because they found out that the gap in one set of rings on my piston was lined up. This caused excessive oil consumption via blow back. The elbow between the MAF and the throttle body had accumulated oil and my intake was lined with oil.
The piston slap is "normal" according to GM. When engine warms and everything expands the tolerances close up which will cause the piston slap to go away or quite down.
I fought for almost 1 year to get them to fix it.
Good luck.
The piston slap is "normal" according to GM. When engine warms and everything expands the tolerances close up which will cause the piston slap to go away or quite down.
I fought for almost 1 year to get them to fix it.
Good luck.