Low compression

2005 CHEVROLET CAVALIER
116,000 MILES • 2.2L • 4 CYL • 2WD • AUTOMATIC
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PINDO
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Found out that cylinder one has 150 psi cylinder, two has 130 psi, cylinder three has 30 psi and cylinder four has 0 psi. Cylinder three and four engines are way low on compression. Engine is 2.2 Lite Ecotec.

Thanks, Duane
Oct 19, 2018 at 10:36 AM
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ASEMASTER6371
  • ✓ASE Certified Mechanic
  • 52,796 POSTS
  • ASE Certified Mechanic
Good afternoon.

The cylinder head will have to be removed to determine the failure.

Possible issues:

1. Burned valves

2. Damaged pistons

3. Head gasket failure

You could inject air into the last two cylinders with shop air and see where the leak goes. It could go out the exhaust, back into the intake, out the oil fill cap or out the radiator.

That will give you an idea where the leak is located.

Roy

https://www.2carpros.com/articles/the-reasons-for-low-compression
Oct 19, 2018 at 12:32 PM
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