2006 Arctic Cat Prowler 650 H1 won't idle

[Kidsskipp]

Getting my prowler to a running stage and can't figure out why it won't idle without throttle. Also see fuel spitting out air intake while running. High speed runs rough as well. I've done many things (that were needed) but it hasn't helped. New plug, rings (120 lbs compression luke warm), timing chain, valve job. Even tried a cheap new carb. Thinking I may be off a tooth on the timing but it looks pretty dang close. anyone see this issue before?

[that guy from Canada]

Arctic cat v-twins are notorious for the choke sticking, replace cable, plungers and springs.

If the little rubber boot on lever is ripped change it too or ypull get water in the cable.

Id reinstall the factory carbs. Also idle mixture screw is super finnicky set it with engine well warmed and deal with crappy long warm up time.

[Kidsskipp]

Thanks for the the response. This unit is actually a single cylinder. Would that change the advice at all?

[that guy from Canada]

Well not really, choke problems will still cause aall the same issues so its worth checking.

If its not a fix id double check timing, remeber to finger in the chain where the tensioner goes after setting to remove chain slack and double check marks.

I also install head cover temporarily with 4 center bolts snug not torqued and rockers slacked off to hold cam same with tensioner finger tight on bolts.

Then rotate engine one cycle, 720 degrees oor 2 turns, then remove everything and recheck timing.

If you have a friend you can hold cam in place with one hand finger tension chain with other and have them rotate engine... slowly! Then rechecking saves ssome time but sometimes the cam will move.

[that guy from Canada]

After that long spiel, you do have valve clearance correct and not too tight 

[Kidsskipp]

Thanks! In your experience do the timing marks align dead on or slightly offset clockwise or counter clockwise? I have tried both and haven't changed symtoms but will try your suggestion.

[that guy from Canada]

Unless chain is stretched badly they sould essentially be bang on, even with stretch and marks not perfect, one tooth off is quite obvious.

Also be aware some models have a mark on flywheel at F for fire, ignition timing, another at T for TDC make sure you have the right mark or your beating a dead horse.

Hope this helps