Compression readings - need advice
#1
Compression readings - need advice
Dry test 1 2 3 4
180 175 140 115
Wet test 1 2 3 4
240 300 200 180
1993 civic ex - just swapped in a d16z6, from idle to 2500 rpm it misfires and after that it seems to run okay, thinking stuck rings? But cyl 2 doubled in comp. , is that norMal?
180 175 140 115
Wet test 1 2 3 4
240 300 200 180
1993 civic ex - just swapped in a d16z6, from idle to 2500 rpm it misfires and after that it seems to run okay, thinking stuck rings? But cyl 2 doubled in comp. , is that norMal?
#3
Honda-Tech Member
Re: Compression readings - need advice
If you went crazy with the amount of oil you put in the cylinders, then yes, your compression could easily double like this one did.
If I was you, I would run the engine, let the oil burn off and then do another compression check.
Looks to me like this engine is going to need some internal work.
If I was you, I would run the engine, let the oil burn off and then do another compression check.
Looks to me like this engine is going to need some internal work.
#4
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Location: san antonio, texas, usa
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Re: Compression readings - need advice
Dry test is just that, wet is add oil to a cyl and crank the engine over a few times to mist the oil in the cyl then check.
#5
Honda-Tech Member
Re: Compression readings - need advice
Looks like Cyl 3-4 are having issues, and internal work is warranted. The 300 reading on cyl 2 could easily happen to an otherwise healthy engine if you got a little heavy with the oil or didn't cycle it enough after adding oil. In any event, anything under ~165ish dry is no good and we would reccomend opening it and taking a look.
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