back fireing?

[km550123]

my 650 keeps back fireing?
what is the vause of that?
it wont start
thanks

 

[km550123]

where does the red wire with the fuse go? one end to the spark plug wire. what about the other end?

i have the diagram but the msd has an extra wire

 

[ger87410]

Since when does the spark plug wire have a fuse??

Backfiring could be caused by *many* things. When was the last time it was working?

 

[km550123]

last year. sorry i worded that wrong...where do both end of the fuse go to then?

 

[km550123]

i went through the e-box.
everything is right and the ski ran last year.
i had the flywheel/ stator off over the winter

whatr else could it be

 

[Adam]

Exhaust leaks can cause backfires

 

[701superjet]

to much unburned fuel??

 

[ger87410]

Does it turn over on it's own at all? Like fire for a few seconds then quit?

Is backfiring the only symptom you're having?
How often does it happen?
Does the ski run at all? Does it idle?
Do you have spark?

 

[n0limits]

could be timing...a while back mine did something similar but the fly wheel key had sheared causing the flywheel to move.

 

[Roo]

Does it only Spark when you let off the start switch?

Mine would backfire because of this... I said screw it and replaced the whole ignition system. Easy way out.

 

[Captain PegLeg]

Sound like a timing prob since you had the stator out. But i'm not a pro, i would start where you last figeted.

 

[cmeripper26]

Sounds like an ignition prob. As far as the fuse, the fuse wire should be running from the relay to a red splitter on the CDI. as far as most ignition wire setups will tend to go. Good luck with the trouble shooting.