it kinda sounds like you might have a resticted fuel line somewhere. try using a bucket of fuel and pull fuel from there just before your filter. good luck

 

sounds like it could be a junk fuel line into the pump housing

 

Take it to the vet

 

does it die if you rev it at a higher idle for some time?

sounds to me like your sucking and air bubble from somewhere or theres shit in your tank

 

thats what i thought too and i dropped the tank and checked it to be sure and put a new fuel pick up in the tank also. the messed up part is this thing has ran great for years and all of a sudden does this crap. to answer the other question, it does keep running if its sitting still and i rev it up. it only does this after a few minutes of driving. today we checked all the fuel lines (no leaks) and drained the tank (again) with no luck. tomorrow, we start replacing fuel line!

 

Dont forget about the return side of the fuel system. After it dies, what happens if you try and restart it directly afterwards? Crack a fuel line loose after it dies, then crank to verify that you indeed have a fuel supply problem.

 

sounds like its a 3208 cat. deff symptoms of sucking air