Mechanics

NO COMPRESSION IN THE ENGINE

1999 Pontiac Grand Prix

Engine Mechanical problem
1999 Pontiac Grand Prix 6 cyl Two Wheel Drive Automatic 150, 00 miles

My Grand Prix is not getting compression, what might be the cause?
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Jlhilbert
November 2, 2009.



No compression on any cylinders?

Camshaft is broken, timing chain broke, timing chain lower sprocket has broken woodruff key.

While it could be a broken spring, pushrod, rocker, I can't imagine they would ALL be broken.

Mmprince4000
Nov 5, 2009.