Need help with the 3.7L

Fuel system. Start with the tank. Take it out. Look inside and inspect it closely. If it's not rusted all to hell, it has crap in the bottom of it probably 1/2" deep. Rinse it out or take it to a radiator shop and get it professionally cleaned and coated on the inside. Blow out the fuel lines, get a new fuel pump, filter and be prepared to rebuild the carburetor. These cars are OLD. Gas is not filtered great out of the pumps at the station. Over time, sediment builds up and contaminates the fuel system. Unless you do as I outlined, you will keep having trouble with it. Fix it right now and you will have years of trouble free service.