Question about 1996 Ford F150 Regular Cab
Kind of a strange problem, we usely see this kind of a complaint on a cold start, usely first thing in the mooring, i think what you have going on is there is no fuel pressure when you try to start the engine, hear are a couple things you can try, next time it fails to start try to cycle the key on for 5 seconds off 5 seconds on 5 seconds off 5 seconds on 5 seconds what you are doing is charging the fuel rail if the truck starts then check this things in this order first you need a fuel pressure reading the pressure should be 36 to 42 psi if it is to low pinch off the fuel return line if the pressure goes up replace the fuel pressure regulator if with the fuel return line pinched off the pressure does not go up the you need to replace the fuel pump and by the way there is one in each tank.
if after you cycle the key to charge the fuel rail the truck still will not start,try holding the gas pedal to the floor and see if the engine will start if it does then what you have is called a hot fuel soak caused most times by a leaking fuel pressure regulator, or a dripping fuel injector.
remove the vacuum hose from the fuel pressure regulator, if there is any fuel in the hose replace the regulator. if no fuel in the hose suspect a dripping fuel injector.
also one other thing check the electrical plug in on the fuel tank switching valve we have seen a few of these get corroded and not allow the fuel pumps to run and after you switch the valve a couple of times the connector will make contact again and the pumps will run, this one can be a pain to find, allot of the time you can just unplug and re-plug the valve and it will cure the problem.
this will give you a few things to try, if after trying this things you still have the same problem, get back with me and i will tell you how to check the ignition system, but i think it will be a fuel problem.....good luck
Posted on Apr 04, 2011
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Posted on Jan 02, 2017
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