damn jetting!!

[01400ex]

I got my 400 out yesterday. I was sittin there reven it up a bit and it would backfire. And if you gave it alittle gas let off then just stab it it would stall evertime.

I just put in a dyno jet kit maybe 3-4 weeks ago and it ran fine.

I yook the plug out and its black. Am I to Rich??

Please help
Later Ryan H.

[flaneledholes]

Originally posted by lars
sounds like to rich if its black or wet:cool:

But he also said it is backfiring... WTF????