Timing Issues!!!!

[YFZ#426]

I have just recently installed an Athena 480 big bore kit. The first ride went pretty well. I broke it in for approx. 10-15 hours. The next time i went to ride it, it ran horrible. It started hard and didnt idle. There was also a huge power lose. I traced the problem to the timing. It was way off. So i adjusted it and went for another ride. After about an hour of riding it jumped time again. Any suggestions on what it can be. The timing chain tensioner seems to be working fine. I am kinda think ing that the chain may have streched. Let me know what you guys think.


Thanks,

Todd

[woodsrider4ever]

that sounds like a very probable thing that happened where is it jumping timing? one cam both cams or the crank?

[YFZ#426]

both cams

[woodsrider4ever]

do you have stock cams on it and are the cams timed together corectly but the crank isnt timed to them?

[YFZ#426]

yea they are stock cams