so had my beauty up and running great but yesterday the wife and I went bouncing around in the woods and had to turn around because it suddenly wouldn't idle. Now by that I mean it'll run but really funky at low rpms and if I let off the throttle it dies or will idle really low and lope then die. I'm going to go out today and look at it I was hoping for some ideas what it may be or a good place to start. And by bouncing around we were 4 wheeling nothing harsh but my first thought was clogged fuel filter from the shaken up gunk in the tank. But it starts just won't idle

 

Check your vacuum lines. Maybe one came loose or broke..

 

I checked those there's only one for the vacuum advance non of the emissions stuff is hooked up (I bought it that way) I found another fuel filter right off the tank so that makes three filters total and the canister filter attached to the fuel pump had so much rust and metal flakes in it there was actually sediment built up on the bottom. Of the canister it was no joke nearly an inch thick and I have spark very good spark actually. I got it to idle when I tweaked the air fuel screws it still is rough but it idles and if I try to hold a speed say even at 2000 rpms it will hold for a second then it drops off and goes back and forth really rough like.