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Still misfiring and still extremely frustrated!

Old 11-18-2018, 11:29 PM
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Still misfiring and still extremely frustrated!

Hey guys, I have a 2003 Acura CL as a somewhat project car that needs work. I have been misfiring on all cylinders since July and I posted on here asking for help around that time. Some suggested that I do a valve adjustment. So I did the valve adjustment with my auto tech teacher(Honda tech for 25 years), replaced all coils and plugs, fuel injectors and did a compression test. Now Iím still having a misfire on cylinder 4 and donít know what else to do. Iím thinking it could be some type of electrical or wiring issue. Also if you have not seen my last post Iím having issues with the anti theft system as well, I donít think itís related. Any suggestions would help thank you!
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Old 11-19-2018, 07:17 AM
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are the cats good? have you done a leak down test?
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Old 11-19-2018, 09:45 AM
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Old 11-19-2018, 04:54 PM
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Hey guys, I just scanned my car again and only cylinder 1 and 4 are misfiring. One thing I noticed is that many people with Honda v6 engines on the internet are also only getting misfires on their 1 and 4 cylinder aswell. I donít think this is a coincidence...
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Old 12-06-2018, 09:55 PM
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Originally Posted by 3.2beast View Post
Hey guys, I have a 2003 Acura CL as a somewhat project car that needs work. I have been misfiring on all cylinders since July and I posted on here asking for help around that time. Some suggested that I do a valve adjustment. So I did the valve adjustment with my auto tech teacher(Honda tech for 25 years), replaced all coils and plugs, fuel injectors and did a compression test. Now Iím still having a misfire on cylinder 4 and donít know what else to do. Iím thinking it could be some type of electrical or wiring issue. Also if you have not seen my last post Iím having issues with the anti theft system as well, I donít think itís related. Any suggestions would help thank you!
Very easy fix. The intake manifold gasket is upside down. Flip it. While you're inside there take some brake cleaner & clean up those nasty carbon deposits. Many of these CL engines have this problem. Not sure how the gaskets were flipped in the first place but it's an easy fix. Misfires resolved--all of them.
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