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Message started by Tocsik on 10/31/15 at 09:30:45

Title: spark plug insulator question
Post by Tocsik on 10/31/15 at 09:30:45

I don't know enough about the subtleties of spark plugs to know if this is a problem.
Plugs are cheap so I'll replace it but was curious about the possible cause and/or problems from having this.
It looks like a small piece of the insulator tip blew off the side and the area around it is a little blackened like there was a side detonation or something.
Hoping any small fragments just went out the exhaust port :-/
Anyone seen this or have insight about possible problems? The bike seems to run fine. '08 with 10k miles.

http://i1115.photobucket.com/albums/k548/Tocsik87/S40/spark%20plug/IMG_20151010_1218438512_zpsdppmpbuf.jpg (http://s1115.photobucket.com/user/Tocsik87/media/S40/spark%20plug/IMG_20151010_1218438512_zpsdppmpbuf.jpg.html)

http://i1115.photobucket.com/albums/k548/Tocsik87/S40/spark%20plug/IMG_20151010_1218402662_zpszktuzyuj.jpg (http://s1115.photobucket.com/user/Tocsik87/media/S40/spark%20plug/IMG_20151010_1218402662_zpszktuzyuj.jpg.html)

Title: Re: spark plug insulator question
Post by verslagen1 on 10/31/15 at 09:50:44

take a knife and scrape around, I think you'll find that area is just a coating of residue from the gas burning off.

otherwise the plug looks fine.