Troubleshoot: Did compression test... problem with cylinder #2
#1
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b18c5 compression test...not good...help
posting for a friend:
we did a compression test last night on his c5 motor. here's what the numbers were:
210
125
210
210
what do you guys think can be the problem? i checked his valves and they were very lose. i did a valve job and set the intake to .007 and the exhaust to .008. i put a cap full of oil in the #2 cyl and the compression went up to 210 like the others.
the car isn't over heating, no smoke out the exhaust, no oil on the plugs, no coolant in the oil, no oil pressure light.
any ideas on what could be wrong with his motor? he's thinking its a bent valve, but how do you tell if you have a bent valve? when at idle, his car does sound kinda funny when you listen to the exhuast.
we did a compression test last night on his c5 motor. here's what the numbers were:
210
125
210
210
what do you guys think can be the problem? i checked his valves and they were very lose. i did a valve job and set the intake to .007 and the exhaust to .008. i put a cap full of oil in the #2 cyl and the compression went up to 210 like the others.
the car isn't over heating, no smoke out the exhaust, no oil on the plugs, no coolant in the oil, no oil pressure light.
any ideas on what could be wrong with his motor? he's thinking its a bent valve, but how do you tell if you have a bent valve? when at idle, his car does sound kinda funny when you listen to the exhuast.
#4
Honda-Tech Member
yeah, thats a classic case of ring problems. But you sound intelligent enough about the situation to know this already. i think you are just looking for someone to give you a magic answer thats NOT the rings. so here goes (seriously)
1. head gasket
2. warped head
3. ok i only got 2....
1. head gasket
2. warped head
3. ok i only got 2....
#5
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Re: b18c5 compression test...not good...help (hondaeg8)
just wondering if its a ring or bent valve.
how can you tell if you have a bent valve?
what will happen the car continues to be driven like this?
how can you tell if you have a bent valve?
what will happen the car continues to be driven like this?
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#8
Honda-Tech Member
not trying to be argumentitive, .rj is right, most likely other cylinders would be low as well. Do a leak down test, this will tell you whats wrong. But from your description of adding a little oil and having the comp numbers shoot up, it sounds like rings.
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blackeg
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03-28-2005 06:10 AM