hey guys im having a problem with my 01 400ex and i think its either the lifters or the valves. it makes i fast pace clicking from head it sounds like. once it gets hot and u tap the trottle it makes a loud clicking and when ur accelerating it does it too.

let me know what u think

 

just gonna throw this out there have you thought about re-gapping your lifers, i have heard they will make noise if there are too loose, i know the gaps should be 4 on the intake side and 5 on the exhaust side, hope this helps you out,
Wreckless

PS, when you get the problem fixed let me know what it is, Thanks

 

what do i do to gap the lifters

and where are they located

 

i will try to explain this is best as possible, take off your front plastic and gas tank and the plastic peace between your motor and gas tank and if you look under that you will see 4 big socket heads, dont know how to explain them but when you see em you will know, take those off and right there after your lifters, losten the bolt that is right underneath the flat screw head, then losten the flat screw and the put your gapping tool between the lifter and set it at what it needs to be, then hold the screw in place and tighten the nut back down. The gap checker you can probably pick up at your local napa, i got lucky and a friend had one for me. hope this helps you out i am not the best for explain this but i just did it to my bike so its still sorta fresh.

WRECKLESS

 

alright cool thanx ill look at it when i have time


by the way i love ur bike that thing should ripp pretty good

where would i be able to get the maintanance guid i think it is

 

I just did mine last Saturday. Go here for a step by procedure: http://www.atvriders.com/articles/va...ment400ex.html

 

alright cool thanks