Running rich
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Running rich
Hello I have a problem and having a brain fart. I have a 1990 and I got the carb tuned up to some new pipes last year. I basically run it right off back fire.. Kind of on the lean side. But the problem is, my pipes are turning gold and when I check my plugs, they have soot on them (black), to me means signs of richness. It'll run hot hot then I'll give it more gas. Sounds to me I need something done with my jets. My question is bigger or smaller. Thanks for reading..
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No. I guess I didn't explain it right. I leaned it till it backfired, then riched till it stopped backfiring. Then it ran very hot and made a little more rich to get the temp down. It doesn't backfire now, just runs rich. And if I lean it anymore it'll run hot and backfire.
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Timing is right. I think its like a turn and a half out now. But this summer is turn it like 8ths out till the temp went down.
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Cruiser
Joined: Jul 2011
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From: Pacific Northwest
Back firing through the exhaust indicates rich, not lean (coughing through the carb indicates lean). Black 'soot' on the plugs also indicates rich condition.
Pipes turning gold and/or blue close to the cylinder heads (where they get the hottest) is normal. Most people cover that part of the pipes with heat shields.
Pipes turning gold and/or blue close to the cylinder heads (where they get the hottest) is normal. Most people cover that part of the pipes with heat shields.