Re: Any idea what would cause this?
Posted by cdaiscool on
URL: http://vintage-and-classic-hondas.81.s1.nabble.com/Any-idea-what-would-cause-this-tp4039735p4039755.html
If its oil on the plug, then I would suspect valve seals letting oil past. If its carbon, I'd suspect a bad tune in the carbs.
I personally would be getting new, cheap plugs (why waste money on iridium for testing? Get them once all is sorted out), run them, check for carbon and tune issues, tune as needed, verify your spark is good, then a final step of putting new iridium in there.
If you've got oil for sure messing it up (wet vs dry black) then you may want to pull the head and check out your top end. See if the valves are adjusted, if the seal is visibly compromised, and check that out. The oil could also be causing the cylinder to have a bad combustion event, and only fire sporadically, causing the exhaust to be cool.
URL: http://vintage-and-classic-hondas.81.s1.nabble.com/Any-idea-what-would-cause-this-tp4039735p4039755.html
If its oil on the plug, then I would suspect valve seals letting oil past. If its carbon, I'd suspect a bad tune in the carbs.
I personally would be getting new, cheap plugs (why waste money on iridium for testing? Get them once all is sorted out), run them, check for carbon and tune issues, tune as needed, verify your spark is good, then a final step of putting new iridium in there.
If you've got oil for sure messing it up (wet vs dry black) then you may want to pull the head and check out your top end. See if the valves are adjusted, if the seal is visibly compromised, and check that out. The oil could also be causing the cylinder to have a bad combustion event, and only fire sporadically, causing the exhaust to be cool.
Turbos, Hondas, 4-bangers, what could go wrong?
Shiny: [...] Considering the weather you've had to put up with I'd say you get an Iron Butt award and a Frozen Nipple trophy to go along with it. First time I've ever posted the word nipple... it ends here.
Shiny: [...] Considering the weather you've had to put up with I'd say you get an Iron Butt award and a Frozen Nipple trophy to go along with it. First time I've ever posted the word nipple... it ends here.
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