2005 Pontiac Aztec. Upon start up the valves seem to rattle. Any answers?

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2005 Pontiac Aztec. Upon start up the valves seem to rattle. Any answers?

2006-09-21 12:51:15 · 2 answers · asked by crackerjax2009 1 in Cars & Transportation ➔ Car Makes ➔ Pontiac

2 answers

are you sure its not piston noise. these engines use skirtless pistons which clatter when cold.but if it is indeed valve lifter noise then all lifters need replacing.

2006-09-21 17:51:24 · answer #1 · answered by deltech 4 · 0⤊ 0⤋

cheap or dirty gas. try running higher grade for one tank full. or buy high octane additive for one tankfull.

2006-09-22 08:05:13 · answer #2 · answered by S. V 1 · 0⤊ 0⤋