mike-evans
Member
- Sep 16, 2009
- 142
- 0
2001 YZ 250, My bike bogs at first touch of throttle when riding, smokes alot when started up and loads up while having to clear it before riding....and has alot of spooge...cylinder liner and piston has approx 4 hours on them, along with new crank seals, jetting is standard at PILOT 50,, MAIN 180 STANDARD NEEDLE CLIP SECOND FROM TOP (leaned out one clip). Once I get to half throttle it pulls like a train and hits hard.
Been doing a bit of reading and come to the conclusion that my pilot is rich due to it being factory jetting, so want to drop it down one size (52)..
Just phoned my local bike shop asking for the pilot jet, and he was saying it is probably not the pilot as Yamahas come jetted good? He said most prob rich main? Hes put me right off track now....any ideas guys?
*Yet to check my plug, just after an idea*
Been doing a bit of reading and come to the conclusion that my pilot is rich due to it being factory jetting, so want to drop it down one size (52)..
Just phoned my local bike shop asking for the pilot jet, and he was saying it is probably not the pilot as Yamahas come jetted good? He said most prob rich main? Hes put me right off track now....any ideas guys?
*Yet to check my plug, just after an idea*