400ex no start

[lilwhitetruck]

ok well i install a je 10:5 piston (stock bore) just to get a little more from my 04 400ex. as i was putting every thing back together i found a little pin approx 1/8 inch in diamiter and maybe 1inch long. anyone now were this goes. i keep reading about a spring and a plungger under the cam. i dont recal seeing this. after it was all together i tried to start it. i wants to start but just wont start. please help!!!!!!!!!!!!!!

ps cam is stock

[ride red 14]

thats it goes underneath the cam on the chain side there is a hole for it theirs a spring and the pin

[ironbear77]

so what is the spring and pin for or do???
it is under the cam on the right side...:)

[JOEX]

Originally posted by ironbear77
so what is the spring and pin for or do???
it is under the cam on the right side...:)
From i've read and understand it holds one of the exhaust valves (both?) open so the starter can spin the motor over faster and start easier.

Please correct me if i'm wrong:D

This is what they look like...

[400EX QUADER]

yep.... why does it look like a quarter??:confused:

[400exMO]

Originally posted by 400EX QUADER
yep.... why does it look like a quarter??:confused:
Lol, are you joking? He just has them by a quarter for size reference.

[400EX QUADER]

yeah I was kidding... lol tryin to be blonde.:devil:

[ironbear77]

hey I pulled my 400 ex tonite and it started but didnt run well and keep stalling we pulled it like 5 times and it started every time but still wont start by the button. I wonder if the timing thing that hits that plunger is out of sink it will spin around one way ???
I think it is 180 out so I m gonna reset the timing once again. I bet I can tear the timing apart faster than any one at this point.LOL>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>