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3,274 Posts
Discussion Starter #1
So did a compression test last night, warm engine but colder ambient temps

First test 80~° warm engine
130
130
128
130


Last night 54° warm engine
132
133
130
133


Now this is at like 6300ft asl, but still these are really low numbers for 9.7:1 it should be in the 180+ range right?
could anyone do quick test on their 2.5? Even just test 1 cylinder i want to know someone elses numbers.
 

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504 Posts
So did a compression test last night, warm engine but colder ambient temps

First test 80~° warm engine
130
130
128
130


Last night 54° warm engine
132
133
130
133


Now this is at like 6300ft asl, but still these are really low numbers for 9.7:1 it should be in the 180+ range right?
could anyone do quick test on their 2.5? Even just test 1 cylinder i want to know someone elses numbers.

Compression test is useless. Try a differential test to find out what's leaking. I bet exhaust valves
 

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Just call me Rabbit
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480 Posts
Compression test is useless. Try a differential test to find out what's leaking. I bet exhaust valves
Cylinder leakage test!

I'll try try one tomorrow if I have time
 

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Discussion Starter #4
I just want someone elses standard old compression test numbers.. that's all. It takes like 5 minutes TOPs to compression test 1 cylinder.. cmon.
 

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Just call me Rabbit
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480 Posts
I was reading between 138-141 on a dry comp test.
Semi-warm engine, 'cold' indicator was on but still warm, and at a decently high altitude in Pittsburgh.
Also don't think I cranked the engine enough. Couldn't remember if it was 4 or 5 cranks/puffs. Pretty sure one time it hit ~180.
 
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