I did a compression test on my '98 s70 2.4L non-turbo and and the middle three cylinders are virtually dead, car still has kick though. Cylinder 1 was 175 psi, 2 was 125 psi, 3 was 134 psi, 4 was 139 psi, and 5 was 165 psi. Could this be a blown head gasket? I would much rather it be that than valves or piston rings.

 

I would try running valve cleaner through the system and drive it a little then retest.

 

Alright ill give it a shot today, Thanks!

 

how many miles are on the car? when was the last time u changed the spark plugs? take them out and clean them or change them. look in the plug cylinders for any debree and or cracks. make sure plugs are tight then retest.

 

it has 129,000 miles but i ran valve cleaner through the fuel system and it really seemed to do some good. I think this week im going to do an oil change and tune up. Thanks for the suggestions, they really helped!

 

Let us know how it goes.

 

I would get some of this stuff and add it to a new oil change.

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