Need spark help.

[1meanblaster]

There is something wrong with my spark. the quad will start and run great then die. and then its like i dont have a spark. it cuts in and out. where do i start with tracing it down. i doubt its the stator. and the fluxuations are causeing backfires tooo

 

[gizzy2014]

try new plug?

and idk but it may not be a spark problem, but ill let the more knowledgeable guys chime in on that.

 

[1meanblaster]

i already tried a new plug

 

[Awk08]

follow the electrical trouble shooting in the manual........
http://www.blasterforum.com/general-support-17/downloadable-yamaha-blaster-manual-17325/

copy/pasted from another thread:

 

[Larry's Shee]

TORS brain(box) unpluged? Got parking brake? Did you go through lots of water recently?

Check, clean,tighten,add dielectric grease to ALL connections. Be sure that coil has clean, bare metal (add digrease) or run seperate ground back to motor. Ohmed coil? Plug boot (both seperately)? Trim 1/4" off coil wire (new/fresh connection) add digrease. check switches for continuity in both on and off position. Pull flywheel, remove rust from stator poles and flywheel. Report back findings.

 

[1meanblaster]

there is no tors or parking brake. rust on the stator pole maybe.. killswitch for sure works. and when i looked at the harness. the grounds were horibly done

 

[Russell45]

Wow thanks for this timely thread, and the reminder to go to the manual when in trouble. I just finished a full rebuild, and have no spark. The procedure AWK posted from the manuel should be just what I need to make some sense of it. Beats the hell outta yanking on random connecters all day.

 

[1meanblaster]

I used this and rewired the whole quad and all i have now is the spark and headlight. i dont know why but i have all my spark back after doing this. now i just need to fix my fuel problem http://www.blasterforum.com/engine-13/yamaha-blaster-wiring-20088/

 

[Larry's Shee]

Little GREE N for both for getting 'er done or getting on the right path to !! I:I