Recently bought a used 660 for one of the boys. It was suppose to have rebuilt engine (bored and freshened up). It was a hard starting beast when we looked at it but was reasonably priced. Had to grab it.
So, the kid wants to run his bike with dad and siblings but foesn't go cuz it takes forever to start if at all. Usually he starts it by pulling it with a 4wd model. When it starts it runs great. once running it will start all day w/o any issues.
Raptor has great spark, lots of fuel and yes the vavle lash was just checked and readjusted. When cranking it sputters and coughs but no firing up. Just wondering if anyone has any thoughts on what else to look at.
At this point we are looking into the cam/crank timing and wondering if its of a tooth or 2 as when cranking it occasionally sounds like firing in the exhaust.
Thanks for these forums...they are a great tool to track down issues with problem bikes