Plug color
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Tourer
Joined: Jul 2011
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From: Great Lakes State
Plug color
Any opinion on the color of these thus far, I am on a 2010 FLHTC, Rinehart 4" slip-on's with a (catless, gutted stock head pipe) and stock a/c, no tuner.
Got about 200 miles on these since the head pipe install?
Got about 200 miles on these since the head pipe install?
HDF Community Team
Joined: Jun 2006
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From: san antonio
It is really hard to evaluate plugs from photos; need a magnifier to really look them over. Having said that, those plugs indicate a slightly lean condition; you need to open up the A/C and have the motor tuned.
Also, those plugs indicate an overall condition; you need to do "plug cuts" to actually evaluate plugs at cruise and WOT. Google "Spark Plug Reading" and "Plug Cuts"; you can figure it out better than what someone can from photos.
Also, those plugs indicate an overall condition; you need to do "plug cuts" to actually evaluate plugs at cruise and WOT. Google "Spark Plug Reading" and "Plug Cuts"; you can figure it out better than what someone can from photos.
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Tourer
Joined: Jul 2011
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From: Great Lakes State
Ok, thx, I plan on doing an a/c and tuner, was just gonna wait a while so I can do some other things. Was trying to find out if I am safe enuf in this condition to run it a while as is.
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Tourer
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From: Great Lakes State
Thx all for your input also...
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HDF Community Team
Joined: Jun 2006
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From: san antonio
I wouldn't wait too long. Prodrag thought he saw inidications of detonation. Get a manifying glass and take a close look at the insulator. If you see black specs, those are indications of detonation; an engine killer. I would get the A/C and tuner now.
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Tourer
Joined: Jul 2011
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From: Great Lakes State
Yea I noticed that post, and looked the pics above of all the plugs, but looks like detonation comes from crack in insulator or improper gap? Not engine tune? Or is there more to detonation? I'll google later.