Electrical / plug fouling??

Tod

Tod

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Joined
May 2, 2003
Messages
754
Location
Decatur, IN
97 700SX - PSI pipes - jetted at 142.5 in all three w/ 45 pilots - stock head gasket - clean carbs- .

Is it possible that my three ignition coils could be going bad and causing me to foul plugs for no good reason?? While riding on friday in 29 degree temps, i fouled several plugs during the day. We rode allot of powder but never did I foul a plug while in the powder. It was always on a nice trail that I would foul a plug. Going at a good rate down the trail, stopped for the grommer to go by, took back off and fouled a plug. I could understand if it was in the powder but the sled ran fine all day in the powder. I have replaced the stater a season ago. Spark plug caps are also new then, new plugs installed. CDI and the three ignition coils all are stock and have 5500 miles on them.

Sat I rode all day without any problem - 18 degrees. Both trail and powder.

Could the ignition coils have a mind of there own. When I did foul a plug it was not real black as if they were fouled but it would not be fireing on that cylinder any longer untill I changed the plug. It also was not always on the same cylinder, more of a random thing.

HELP
Tod
 
Yes i did check the cable. I did not measure the freeplay but i did check to make sure it was not apart and seemed to be working ok. Freeplay looked good as far as a visual.

oil pump is still the same one that came on the sled. same as day one..........
 
Ya know now that you jog my memory I did have my oil light come on at the end of the night on the way back home. And we did not do that many miles but we did do a hell of allot of powder playing. I'll have to check that freeplay.

If the pump is bad does it go to wide open??
 
temp, will affect it quite a bit....had a similar problem on my brothers sons SX-R and when it was cold it was not to bad but as the temp warmed .....plug after plug....dont quote me on this, just giving you my best guess.
 
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