Have had this pickup for about 2 weeks, did a tune up when I first bought it. Sparks, Plugs, Fluids etc. Started 2 days ago, sputtering, loss of power. Sometimes when I give it hell, runs fine. Other times it acts like its completely out of Gas. (and its not). Dual tanks by the way.

Ive been reading something about a Rear Fuel Module, but it does it with both tanks on. Also been reading about how some of the 93's have 92 guts and have a Fuel Selector Valve.

Im lost and confused. Help!

Thanks