2000 Oldsmobile Alero No Compression

Tiny
CORYJR2012
  • MEMBER
  • 2000 OLDSMOBILE ALERO
Engine Mechanical problem
2000 Oldsmobile Alero 6 cyl Front Wheel Drive Automatic

We have gotten new gaskets for the cylinder heads, new piston rings, new gaskets for the manifolds, new oil and water pump. Put everything back together after a second time and still there is no compression getting into the cylinders. Electrical is fine as is the ignition switch, its just there is absolutely no compression getting into the cylinders.
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Sunday, June 27th, 2010 AT 4:50 PM

3 Replies

Tiny
BLUELIGHTNIN6
  • EXPERT
Is it just one cylinder or all cylinders lack compression? Cracked or broken piston will cause a loss of compression, as will cracked or broken rings. The failure of a head gasket will also cause a loss of compression, as will broken, cracked or badly worn valves or valve seats. A crack in the cylinder itself (either the sleeve or the engine block), or a crack in the head itself will cause a loss of compression. A problem with the plug threads or the threads in the head (for engines that have plugs) can cause loss of compression, and injectors (for engines that have them) can leak around the threads, either because the injector threads or the threads in the head have been damaged.
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Sunday, June 27th, 2010 AT 5:25 PM
Tiny
CORYJR2012
  • MEMBER
Pistons are in perfect shape, the plugs and valaves and basically everything else you have described we already checked and look fine, in fact most of the parts are new. We even checked the push rods incase one or two were in the wrong order, but they were fine. Put a little oil in the cylinders to create a seal and still no turn over. This car is honestly a mystery diagnosis. And it is all the cylinders doing this.
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Sunday, June 27th, 2010 AT 7:43 PM
Tiny
BLUELIGHTNIN6
  • EXPERT
Is it no compression or just low? Im assuming you have checked timing belt?
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Sunday, June 27th, 2010 AT 10:36 PM

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