jets maybe???

[Honda Ex Rider]

i have a problem my 400 blows out blue smoke when i start it then when it warms up it only does it when i get on it and it back fires a little i checked the plug and it was white i was thinking my carb needs too be jetted there stock jets and i have a full big gun exhaust and a kn&n...

[400exstud]

Originally posted by Honda Ex Rider
i have a problem my 400 blows out blue smoke when i start it then when it warms up it only does it when i get on it and it back fires a little i checked the plug and it was white i was thinking my carb needs too be jetted there stock jets and i have a full big gun exhaust and a kn&n...

Ouch!!! That is a very bad thing to have your bike jetted THAT lean. You'll simply burn 'er up. Go to the dealership and buy a 152K,155K,158K, 160K, 162K and 165K. I would personally start out with the 160K if I was doing your bike.

Have fun:D