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GC
User
Dec 12, 2013, 10:45 AM
Post #1 of 5
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1999 Honda cr-v 2.0. Miss at idle. Cyl #1 misfire Strong spark all 4. Compression #4 180 #3 190 #2 190 #1 60 Added oil to cyl #1, recheck comp. No change. Vacuum good, no bouncing needle. Before I condemn the exhaust valve, just thought I'd get some input. Any thoughts? How bad are these to tear down?
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Willing to help, willing to learn... Rob
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Hammer Time
Ultimate Carjunky
/ Moderator
Dec 12, 2013, 10:47 AM
Post #2 of 5
(1310 views)
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Re: Exhaust valve
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Anyone mess with the timing belt recently. It could have a bent valve. Doing a leakdown test would be the next step.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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Discretesignals
Ultimate Carjunky
/ Moderator
Dec 12, 2013, 10:53 AM
Post #3 of 5
(1302 views)
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Re: Exhaust valve
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Try a cylinder leak down test on that cylinder. That will tell you which valve is leaking. Haven't had one of those apart yet, so your the guinea pig...lol
Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.
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Tom Greenleaf
Ultimate Carjunky
/ Moderator
Dec 12, 2013, 11:01 AM
Post #4 of 5
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Re: Exhaust valve
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? The cylinder @ 60 PSI. Perhaps just get that to TDC and blow air in plug hole. Bet you hear it come out exhaust pipe vs another,
Tom
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GC
User
Dec 12, 2013, 11:47 AM
Post #5 of 5
(1286 views)
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Re: Exhaust valve
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Hissing at tailpipe. Not going any further on this for the time being. If I end up tearing into it, I'll let you know. Doesnt look too bad to tear down. Shining light down into cylinder shows top of piston looks nasty. 190k miles, not worth doing unless going to do a major overhaul, IMO. Doesnt look like timing cover has been off recently. Should have done leakdown before posting, was just in a hurry and brain fart I guess. Dont get to break out that tool too often.
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Willing to help, willing to learn... Rob
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