HELP - Backfiring Warrior won't start!!

[Sledder2]

I'm running an 05 Warrior and am having a serious backfiring problem and the sled will not start. I did the obvious first - new plugs, fresh gas, drained the carbs. About a week ago, I did manage to get it running, but it was rough - last night, it wouldn't even start - just backfired. It looks like I'm on my way to the shop, but before I go - any thoughts? Has anyone else had this problem?

 

[LazyBastard]

CLEAN the carbs, check the spark -- ie, pull plugs out, assemble them into coils, ground against engine, crank and watch for consistent sparks. You could be looking at a wiring problem (squirrels?) interfering with the ignition.

 

[buddah]

This may be way too simple an idea, but check your TORS......i.e. check to see nothing is wedged into pivot point of throttle flipper. I had ice get in there once and that's exactly how sled acted until cleaned out that post.......

Just a thought.

 

[OneBadWarrior]

How was the sled running when you put it away last year? I would suspect bad fuel. If you replaced the plugs already and flushed the fuel out of the tank I would remove your carbs and CLEAN them out completely. The new ethanol fuels can really cause all kinds of issues once the fuel breaks down. A buddy of mine works at a marina and boats suffer the same sad fate as some of our sleds. Just my 2 cents. Hope that helped.

 

[IFlyEm]

Had the same thing happen to me.

http://ty4stroke.com/viewtopic.php?t=27665&highlight=

Mine was plugs. Did you just check the plugs or replace with new?

 

[YAMAHAMMER101]

I had a problem that i created with my tors, I removed the bar to put expanding foam in them and during the reistall the throttle cable came out of the throttle block and caused the tors to activate and my sled was doing the exact same thing yours it.. Found the problem and the sled ran fine afterwards. Hope this helps.

 

[Len Todd]

First thought when I read this was TORS. Backfiring means fuel is getting in. If it is running at times, then you have spark. That leaves TORS. Carb Cleaning never hurts (well almost never hirts if it is done w/o error). But, I have never seen these carbs messed up bad enought to casue backfiring. I have seen carbs bad enough to do this. However, they we sitting around for several years with fuel in them.Chock stuck partially closed.

 

[Sledder2]

Thanks for all of the input - Although I just replaced the plugs, I tried that again and it worked. It ran like crap initially, but smoothed out and now appears to be running just fine. I think it was bad fuel. We'll see the next I go for a rip - I'll keep the TORS in the back of my mind as another possibility if the same thing happens again..