If your truck is equipped with an electric pump, that will work. However, I will assume we are dealing with a stock 1986 model. These trucks weren't equipped with an electric pump. By the way, even if the truck is equipped with an electric pump, the air pressure method will still work.all i do is pull the fuse for the pump and run a hot wire to it, making the pump run.
I will tell you to remove the air cleaner and unhook the return line on the front of the IP. Then hook up your air compressor to the return line. Open the bleed valve on top of the fuel filter. Hook up a lin on the outlet for the bleed valve and put a cup under it. Make sure the gas cap is on tight, and turn up the air. 5 (five) psi MAX. It doesn't take much, too much you could blow a hole in the fuel tank. After a little while you'll get fuel coming out of the bleed valve and running into the cup. At this point, shut off the bleed valve and unhook the air line. Let any remaining pressure bleed off out the return line, and hook everthing back up. From here on, it's all cranking. quote]
So simple ,never think about that one ,so i add electic pump to solve my priming problemes.It coud be easy way to find fuel lines failiures also.