am having problems with my 04 yfz 450. the problem is that the starter most of the time is not getting enough juice.... its not the battery becuase even if i boost it ... it still doest get enough juice to start (it will start somtimes for a period of time... then it just dies at any rpm). what could this be? (would this be the starter relay?... cause thats the part that bounces when its not getting any juice)

thanks

 

well first of all (this may be very obvious) check the idel adjustment...adjust it to the right settings that could be it ....second i think something with your cdi i had to take mine down cuz the wires kept shakein off...thats all i can think of...i know not to big of a help but better then nothing!!

 

the idles not the problem, becuase when it does start... it idles fine until it dies.

but i will check the cdi and see if thats the problem.. ill let u know my outcome.

thanks.

 

If it dies while running it has nothing to do with any of the starting system components. You have multiple problems. If the starter relay 'bounces' I'm assuming that you mean that it's chattering. This is due to low voltage at the relay. Either your battery is dying, or your battery connections are corroded/loose. Remove/clean/replace and tighten them. Also check/clean/tighen the battery cable connections at the relay (+) and at the frame (-).

This would not likely cause it to die while running though. Fix the battery one first, then you can tackle the dying while running. It's really difficult to troubleshoot multiple problems at the same time.

Good Luck!

 

i have heard of stators going bad and giving the symptoms you have (starts thn dies), check your stator/pickup coil.