Spark Plug color
Elite HDF Member
Joined: Feb 2006
Posts: 3,515
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From:
RE: Spark Plug color
You cant really tell that way, the front cyl runs richer at idle because of the way the stock exhaust is made. To get a correct plug reading,Put in a fresh set of plugs and run bike around for awhile at good speed, interstate or other take it to 60-70 and cruise for a few minutes then kill engine and coast to stop. Now pull plugs and go by color. This is the only waty to get a correct plug reading. Just another note, you may have more of a white plug than tan due to the gas additives used today.
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Tourer
Joined: Aug 2006
Posts: 480
Likes: 1
RE: Spark Plug color
Thanks for the info. This is what I didso far. I installed the Fullsac Kit and a new set of stock HDplugs just like the ones I removedto see ifthe Fullsac system makes a difference. I haven't had the bike out yetbecause it snowed hereFriday andyesterday All I can do know ishope the snow (apx.10") melts fast so I can take the bike for a ride and see if this changes anything.
[IMG]local://upfiles/16240/114361EE9D9A4203B5A7DB7DA0D93D38.jpg[/IMG]
[IMG]local://upfiles/16240/114361EE9D9A4203B5A7DB7DA0D93D38.jpg[/IMG]
Road Captain
Joined: Dec 2006
Posts: 635
Likes: 0
From: In Wisconsin somewhere south of Wausau.
RE: Spark Plug color
I switched from the HD Platinum plugs to NGK Iridium plugs last summer and have had no problems with lean/rich discoloration of the plugs. Not sure if its the new plugs or me driving like a madman...[:'(]
Anyway, the bike seems like it has more power and getup-n-go with these new plugs.
Anyway, the bike seems like it has more power and getup-n-go with these new plugs.
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Elite HDF Member
Joined: Mar 2006
Posts: 4,722
Likes: 5
From: Biddeford, Maine
RE: Spark Plug color
Here is a good link for sparkplug reading -
http://www.dansmc.com/Spark_Plugs/Sp...s_catalog.html
But it is difficult to get a good reading on the plugs with all the additives in the gas now, but it will give you a general idea of how you are running.
Steve
http://www.dansmc.com/Spark_Plugs/Sp...s_catalog.html
But it is difficult to get a good reading on the plugs with all the additives in the gas now, but it will give you a general idea of how you are running.
Steve
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Thread Starter
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Tourer
Joined: Aug 2006
Posts: 480
Likes: 1
RE: Spark Plug color
I took the bike out last weekend and did close to 450 miles, (I installed a new set of stock HD plugs)I pulled the plugs and they look clean and white no deposits . No color change from new. What do you think? MPH was 42 bike runs great as it always has (5,200 miles) I found this pic of someone Else's plugs, and this is what mine look like
ORIGINAL: ricaroo
Thanks for the info. This is what I didso far. I installed the Fullsac Kit and a new set of stock HDplugs just like the ones I removedto see ifthe Fullsac system makes a difference. I haven't had the bike out yetbecause it snowed hereFriday andyesterday All I can do know ishope the snow (apx.10") melts fast so I can take the bike for a ride and see if this changes anything.
[IMG]local://upfiles/16240/114361EE9D9A4203B5A7DB7DA0D93D38.jpg[/IMG]
Thanks for the info. This is what I didso far. I installed the Fullsac Kit and a new set of stock HDplugs just like the ones I removedto see ifthe Fullsac system makes a difference. I haven't had the bike out yetbecause it snowed hereFriday andyesterday All I can do know ishope the snow (apx.10") melts fast so I can take the bike for a ride and see if this changes anything.
[IMG]local://upfiles/16240/114361EE9D9A4203B5A7DB7DA0D93D38.jpg[/IMG]
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