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Fouling plugs

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Old Jun 20, 2017 | 09:01 PM
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TroyCreese's Avatar
TroyCreese
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Default Fouling plugs

New to the forum, trying to find some answers. I have a '94 Electra Glide and the other day had to have it towed home because it was only running on one cylinder. I recently had a rebuilt S&S super G carb put on (jetted down) with the plan of ordering new pipes this week. I've put a couple hundred miles on it since the carb was put on and everything was fine, running good and when I checked the plugs everything looked good, mixture looked good. Tonight I finally got a chance to check for spark and that looked good so I checked the plugs and found that the front one was fouled, black as coal. Replaced the plug, fired it up and it sounded good. Took it down the road about 1/8 mile and still running good until I made the u-turn to come back when it started to sound bad again. Got home, pulled the plug, black as coal again. Any insight would be greatly appreciated.
 
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Old Jun 23, 2017 | 03:44 PM
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Knutson Boltz's Avatar
Knutson Boltz
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check out the web for plug reading 101, tell you what you need to know. was the plug in question wet or dry/?

since its fouling so fast i bet you need new rings
 

Last edited by Knutson Boltz; Jun 23, 2017 at 03:53 PM.
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Old Jun 23, 2017 | 04:47 PM
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TroyCreese
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The plug was dry both times. The engine only has about 10k miles on it. It is a '99 crate Harley crate engine that was put in about 5 years ago.
 
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