1994 Yamaha Warrior Starting Problems

[Vulcan245]

Ok i have a 1994 yamaha warrior, i just got it bored 20 over, got the wisco piston to match ok. so i got and put the top end back together and it wount start, it will backfire somtimes but thats it.

I checked for spark... good check for gas...good check for compression.......maybe 20psi

WTF i just had it bored and a new piston and rings. now if i put a cap full of oil in the cyclinder and crank it, it has tone of compression. i have the piston installed right (arrow pointing to the exaust) ajusted the valves checked the timing i even tryed retarding and advancing the timing but in the end i get nothing... can someone plz help me im trying to get it up and running for rumble on the ridge..

[quadnut20]

have you checked your electrical system ?

[Vulcan245]

Yes i have, a couple of times with two diffrent meters

[marioweldinginc]

You might have the rings in the wrong order or not clocked correctly. Im not sure what your total ring count is but if adding oil raises compression significatly its a problem with the rings or cylinder wall. Timing or valves has nothing to do with it.

Were you able to seat/cycle in the new rings? Until they mate together your compression will be on the low side. Id hate to say iy but i would tear down the motor and check your rings and position. Maybe you put one of the rings upside down

Sent from my SGH-T959V using Tapatalk

Edited September 4, 2011 by marioweldinginc

[Ajmboy]

* Added year and issue to thread title.