Fouled plug

[schmidthouse]

I was riding at Christmas Valley today and the quad started sputtering from about 1/2 throttle and up. Thought maybe the outerwear was dirty. Checked it and it was OK. Checked the Main jet to see if it had come loose. Not that either. Finally checked the spark plug, and it was fouled. Of course I left the new plug at home. I stopped by the Honda shop and told a few guys there and they were surprised that a 4-stroke fouled the plug. Have been riding there twice a month since I bought the bike a year ago and no problems. Anyone ever have this happen?

[ghott]

I would imagine if you're running deathly rich, that might happen...

Ever tried some different jets in her?

[schmidthouse]

Yea I have a full Muzzy system with dyno-jet kit 128 main jet and 6 one inch holes drilled in the lid. Tomorrow I will install a 124 and see what that does.

[ghott]

See what feels best on the butt dyno :).

What pilot you have in her? And how many turns out on the A/F mixture screw?

Are you popping on decel at all?