Compression test result .. Need advice
#1
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Compression test result .. Need advice
Hi there
Ive found a evo 8 that might interest me,
I did a compression test on it,
I had
1- 165
2- 145..
3- 165
4- 165
Should i worry? Or not buy it at all.. Its the only thing ive found on the car..
Ive found a evo 8 that might interest me,
I did a compression test on it,
I had
1- 165
2- 145..
3- 165
4- 165
Should i worry? Or not buy it at all.. Its the only thing ive found on the car..
#6
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First off, was the car warmed up during this test? also, did you test each cylinder twice? I test each cylinder twice, so I can make sure the numbers are accurate.
Next, that #2 cylinder has something up, if the numbers are correct. You may wanna try putting a lil oil into that cylinder and retesting. If the compression goes up after putting oil in the cylinder, then the issue is the rings. If it stays the same, then move on to a leak down test to find your issue.
Last, the spec for difference in cylinders is 14psi.
Next, that #2 cylinder has something up, if the numbers are correct. You may wanna try putting a lil oil into that cylinder and retesting. If the compression goes up after putting oil in the cylinder, then the issue is the rings. If it stays the same, then move on to a leak down test to find your issue.
Last, the spec for difference in cylinders is 14psi.
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Thanks for the responce,
I tested number 2 three time just to be sure, i have a good gage ( mac tool ) also so the problem is not here,
The car was warmed right, i did the compression test right after the roadtest,
If it would be piston ring, how long the car can still run like that,
If its the valve, how long can it run like that?
Thanks
I tested number 2 three time just to be sure, i have a good gage ( mac tool ) also so the problem is not here,
The car was warmed right, i did the compression test right after the roadtest,
If it would be piston ring, how long the car can still run like that,
If its the valve, how long can it run like that?
Thanks
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#15
Evolved Member
Unless this was a garage queen, this is getting to be an old car. The only thing that surprises me about the compression readings are the three cylinders.