teampo900
06-30-2011, 01:12 AM
Hi guys this is my firts post, been doin alot of searchin on this site but can't seem to get my problem solved! Just bought an 85 tri z 250 bike would run strong, then very randomly would fumble and choke and sound like it was loadin up, then it would pull though and run strong! Soo I cleaned the ENTIRE fuel system, washed tank,replaced lines, cleaned lots of junk out of the carb and the petcocks, rebuilt fuel pump, new air filter, new plug, set carb to factory specs, checked reeds all petals were seated nicely and looked fine,mixed fresh 93oct at 32:1 with yamalube 2r then the bike started and idled great but has no power at all,just smokes and has a very dull exhaust tone. Plug is very wet and kinda oily. Went through 4 smaller main jets (470-430) and tried all needle clip positions and it made no diference, I suspected right side crank seal to be leaking oil into my crank case... changed the seal and still no change although the plug is still wet it looks less oily! I can't figure out why this thing is running so badly! Compression is 150 psi. Checked timing.... and the flywheel marks don't line up with the stator mark at tdc, like my manual shows but... if I adjust the stator in eaither direction the bike runs way worse!!! This is drivin me nuts. Any help would be AWESOME!