raptor help

[cheeta]

my buddie has a 2001 raptor he got for cheap not running and we tried to time it up but when we put it at tdc on the side of the motor the piston is at the bottom . is that right? and we timed it up with the mark on tdc and it is blowing gas out thee carbs into the airbox

and we checked the magneto and it is on the keyway so how is the piston on the bottom at tdc? any help would be greatly appreiciated

[AKheathen]

my buddie has a 2001 raptor he got for cheap not running and we tried to time it up but when we put it at tdc on the side of the motor the piston is at the bottom . is that right? and we timed it up with the mark on tdc and it is blowing gas out thee carbs into the airbox

and we checked the magneto and it is on the keyway so how is the piston on the bottom at tdc? any help would be greatly appreiciated

sounds like you're usin the wrong mark. i'm not sure about the raptor, but my honda motor has a window in the cover. blowing out the intake would be 180 off, and i don't have the clymers any more, sorry

[blowit]

From the sound of it, you did not pull the cam? You are just checking it? Remember that the crank turns once per 2 revs of the cam. The best way to know you are at true TDC is by feel but that takes experience. Your valves adjusters should not be tight if it is at true TDC, there should be a slight amount of lash there. If it is timed right, I would say you have hung in intake valve or hang one stuck open.

 

The easiest way to find a crap valve is to pull the cams and push them in with a piece of wood or plastic and listen for them to tap down nicely. A bent valve does not have a pronounced tap when it seats. Probably because it doesn't.

 

 

Brandon

Edited January 16, 2009 by blowit