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Low compression

Tiny
PINDO
  • MEMBER
  • 2005 CHEVROLET CAVALIER
  • 2.2L
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 116,000 MILES
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
Friday, October 19th, 2018 AT 10:36 AM

1 Reply

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
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
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Friday, October 19th, 2018 AT 12:32 PM

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