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Old 09-13-2009, 06:19 PM   #1 (permalink)
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Spark Plugs

Have 96 Fat Boy - what plugs run best in this machine? (Brand & Part #) I ahve benn having problems lately with fouling & haven't changed a thing to carb since it was running great. Put new set champion plugs & won't start. Spark looks weak also.
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Old 09-14-2009, 07:30 AM   #2 (permalink)
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Stock HD plugs work best . Are your plugs oil fouling or fuel fouling ? Oil fouling usually indicates internal engine problems whereas fuel fouling is a problem with the carb setup .
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Old 09-14-2009, 08:08 AM   #3 (permalink)
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run Champions never a Problem hd plugs suck...
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Old 09-14-2009, 08:12 AM   #4 (permalink)
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Quote:
Originally Posted by Badassbrutus View Post
run Champions never a Problem hd plugs suck...
Doesn't Champion make the plugs for HD ???
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Old 09-14-2009, 08:16 AM   #5 (permalink)
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I think ur right but I heard they switched not sure but I always had problems with HD plugs in everthing.
As soon as I replaced em with champ never a problem even in my dirt bikes.
I think its a heat range thing because you know Hd are made to run the leanest possible .
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Old 09-14-2009, 08:24 AM   #6 (permalink)
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bosch platinum-or ngk platinum-or motorcraft iridium...best 3 on the planet...IMHO
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Old 09-14-2009, 06:36 PM   #7 (permalink)
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gruss, you get those brands at a dealer or aftermarket place or what?
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Old 09-15-2009, 09:45 PM   #8 (permalink)
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i use autolight plugs and never had a problem. i run them in my 91 sporty,95 softail custom and my 04 fatboy. make sure the gap is .038 thou
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