400EXSTUDMUFFIN
12-17-2003, 01:25 PM
I have bought an 01 400ex and the day I bought it the bike was running great!!! I rode it at the guys house I bought it at and after my 5 hour drive home I rode it again IT RAN GREAT.
It's an 01 400ex with a K&N and a full R4 Exhaust he did not jet the carb cause WB told him it would be fine
He also told me the bike fauls plugs evey so often I thought nothing of it till today when I tried to crank my bike and it sjipped abd backed fired ans would not run. I changed the plug and it started right up I took it for a little spin to see if evey thing was ok and it ran great up itill you give it over half thottle??????
So the bike cranks and runs fine as long as it's not above half throttle
If above half throttle then I just bogs and thats it
What could my problem be??????
Any help please
It's an 01 400ex with a K&N and a full R4 Exhaust he did not jet the carb cause WB told him it would be fine
He also told me the bike fauls plugs evey so often I thought nothing of it till today when I tried to crank my bike and it sjipped abd backed fired ans would not run. I changed the plug and it started right up I took it for a little spin to see if evey thing was ok and it ran great up itill you give it over half thottle??????
So the bike cranks and runs fine as long as it's not above half throttle
If above half throttle then I just bogs and thats it
What could my problem be??????
Any help please