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where do I get some answers to this problem. Have already replaced fuel filter.
I head out to go camping and the truck runs fine for about 1 hour the first time and about 45 min. the second time. I don't trust it now.
Is there more than one fule filter on this truck ?
Would this psi keep truck from starting?
Any other ideas?
I'm not sure if connecting the power direct ( only power when ignation is on) could damage the pump as it turns on as soon as I on the ignation & will not turn off .I'm worried 1) will I burn out the pump if I was to have the ignation ON 2) will I flood the engine or will the fuel go back into the tank . 3) how can I test the relay .
Thanks mike for the responce...
OK got the ford running again the fule pump had died completly, the clogged filter had taken it's toll on the pump and sent it on a down ward sprial to it's demise.
Thank you to all who sent me their thoughts.
I have a 91 F-150, 4.9. I have a mis on #6 that I cannot figure out. When I start the engine (cold) #6 fires fine, as it warms up the #6 begins to miss, as time goes on it gets to the point where is occasionaly fires and the rest of the time it is missing.
All of the other cylinders fire perfactly through all of this. Compression check is Ideal, all within 10%. New wires, new NGK plugs, timing check Ok, sparkplug wire resistance ok, coil (?), runs ok on the rest of the cylinders. Could it be the ignition module in the distributer, or what? Why would it be in the module for #6 when it is ok for the rest of the cylinders? Anyway, I am at a total loss. Mike
THANK YOU
Mike9408
I shut it off last night with about 1/8 tank of gas in the front tank. This morning it would not start. I switched to the rear tank and it started. I filled the front tank and put gas in the back tank as well. It still will not start on the front tank. I checked the collision fuel-shut off switch. It is depressed and ok I guess; I've never seen one that had activated. It will not run on the front tank: I switched tanks while driving and had to switch right back to the rear tank. There are no fuses in the fuse box inside the cab marked for fuel anything and I don't know where or whether there are more fuses.
The only thing different to me from the day before is that a shield on the exhaust had come loose a few days ago, so I put new bolts in it last night. I can't think that I was any where near any fuel system components, but then, I wasn't looking for them either.
Any help on what the problem is?
THANKS IN ADVANCE. :confuse:
If you have the design of two fuel pumps, it is probably the pump.
Your inertia switch kills power to your fuel pump[s] reguadless what design. If one is working, it is not that.
Be focusing on the selector valve. Good luck
When you say 'rail mounted' are you referring to the frame? I just put all new brake lines on and don't remember anything with wires (selector switch or pump) on the frame, but I'll look again. There is a fuel filter in the gas line that lays inside the frame about even with the drivers floor board.
I don't know where the fuel pump(s) is, but I assumed one in each tank.
Thanks for your comments.
my truck does have 300 6cyl motor with duel tanks and the metal contraption does not have a vacuum line to it and it looks like that i would have to replace the gas line with it.
Thanks Troy
Mike
thanks for any suggestions
thanks
**Dayna**