Boggin 400

[carsubs13]

Just put a brand new Autolite plug in my 400ex and rode it about 15 min and it started boggin at low rpm's and then whenever i reved it up hard white smoke came out of the exhaust it hasnt been smokin at all untill this new plug? do any of yall know what is best to run in them? is pretty much stock nothin very drastic.
thanks

[Shonto rider]

Buy a spark plug from your local dealer., do you ride without your air lid, if so that might be the problem, put your air lid back on, or buy a outerwear air box cover. If that dont work your air filter might be worn.

[boystoys]

i would like to check out one of the denso plugs... :-)