cam question please help???????

[gsxrboy37]

i have an 02 400ex. it has a full whitebrother exhaust, 416 piston kit, jetted and i am not sure what stage cam. i was riding and lost all power. no start or anything. i took the head off to find out the splines on the cam were al eaten up. so just for now i got a stock cam to put in it. wed put the cam in, lined everthing up and still no start. just a back fire here and there. any clue what to do? is the timing still off? do i need a bigger cam? the flywheel is supposed to be lined up with the t mark correct? any info is appreciated. also, what do my valves need to be set at?

[1fst400]

the splines on the old cam where eaten up??? sounds bad..



But anyways, did you re-install the decompresion plunger and spring. you need them with the stock cam for it to run. common mistake.

[2muchquad]

Did you bend a valve?:(

[gsxrboy37]

what exactly is the decompression plunger? and the valves are not bent. thanks

[GPracer2500]

Originally posted by gsxrboy37
what exactly is the decompression plunger? and the valves are not bent. thanks

It's a small metal dowl and a smilarly sized spring that sit in a hole in the head (under the cam). They're needed for the auto-decomp mechanism to work on the stock cam.

[gsxrboy37]

would i just be better off getting a stage 2 cam that does not have the auto decomp mechanism on it?