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Exhaust valve

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GC
User
GC profile image

Dec 12, 2013, 10:45 AM

Post #1 of 5 (1306 views)
Exhaust valve Sign In
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?


____________________________________________________
Willing to help, willing to learn... Rob


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Dec 12, 2013, 10:47 AM

Post #2 of 5 (1301 views)
Re: Exhaust valve Sign In
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.



Discretesignals
Ultimate Carjunky / Moderator
Discretesignals profile image

Dec 12, 2013, 10:53 AM

Post #3 of 5 (1293 views)
Re: Exhaust valve Sign In
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.


Tom Greenleaf
Ultimate Carjunky / Moderator
Tom Greenleaf profile image

Dec 12, 2013, 11:01 AM

Post #4 of 5 (1286 views)
Re: Exhaust valve Sign In
? 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


GC
User
GC profile image

Dec 12, 2013, 11:47 AM

Post #5 of 5 (1277 views)
Re: Exhaust valve Sign In
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.


____________________________________________________
Willing to help, willing to learn... Rob





 
 
 






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