1994 Pontiac Grand Am Compression Test

Tiny
TRYIN2LAYADIME
  • MEMBER
  • 1994 PONTIAC GRAND AM
  • 4 CYL
  • FWD
  • AUTOMATIC
  • 128,000 MILES
What would be the cause of a compression test results being 30 50 160 and 180 (from drive side to passenger side) the car ran like crap so we thought it was timing and desided since the motor was a interferance motor we would do the compression test to make sure no valves were bent. Well now we have the reading and cant figure out what would cause the jump in pressure on just 2 cylinders.
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Sunday, September 26th, 2010 AT 11:38 PM

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Tiny
BLUELIGHTNIN6
  • EXPERT
Could be cracked head gasket
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Sunday, September 26th, 2010 AT 11:42 PM

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