spark plug help
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Cruiser
Joined: Feb 2009
Posts: 140
Likes: 1
From: Covington, Ga.
spark plug help
Im a little concerned about the way my bikes running with new setup....Can one of you knowledgeable gents help me analyze this plug? looks lean to me but I prefer to have a 2nd and 3rd opinion
Stellar HDF Member
Joined: Dec 2009
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From: North Cental Iowa
Looks about like #24on dawg's link, lean but OK, looks like it's borderline, hard to tell from a small pic. Do the tiny specks appear to be aluminum? If so it could be preignition, not good. What's your "new" setup, that would help.
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Cruiser
Joined: Feb 2009
Posts: 140
Likes: 1
From: Covington, Ga.
Does the pic not enlarge when its clicked on? My set up is fulemoto, A/C ,PCV, and dyno tuned with comp baffles.
Last edited by Crewdog151; Apr 11, 2010 at 07:48 PM.
Stellar HDF Member
Joined: Dec 2009
Posts: 2,560
Likes: 279
From: North Cental Iowa
It enlarges, but it's still just a pic, if you got a dyno tune you should have got a print-out & it should have the air- fuel ratios if the tuner was any good at all, if it wasn't tuned then give FuelMoto a call.
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Cruiser
Joined: Feb 2009
Posts: 140
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From: Covington, Ga.
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You have to shut the engine off immediately after a full temperature run, ANY idling at all will alter your plug color/condition.
Mark
Mark
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Thread Starter
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Cruiser
Joined: Feb 2009
Posts: 140
Likes: 1
From: Covington, Ga.
That makes sense. Thanks for all the replies.
Cruiser
Joined: Jun 2008
Posts: 173
Likes: 0
From: Brighton Mi.
I say that looks like Glaze dose it misfire ever? cold plug alittle rich builds up carbon than a hot run the carbon melts and forms a glaze. it is phenomena I just typing out loud. What is you engine set up and are there any other symptoms. Don over and out.