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Compression

gpo55

New member
When you have zero compression in any given cylinder, does this normally mean a complete overhall or head rebuild?
 
Zero pressure may suggest one of several things.


  • Valve train hardware that has become inoporative
  • One or two valves or valve seats that have gone bad
  • Detonation damage that made a hole in a piston deck

A cylinder leak down test should reveal where the problem is.
 
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