Re: My truck ran and now it does not!!
The fuel pump can be heard as a mid-tone droning sound for barely two seconds each time you switch the key to the run poistion, which to remind you is the last postion right before start. If you don't hear it, don't freak. Check the fuse, and switch the relay in the fuel pump position with another one that's already inside your under hood fuse box and see if that has any effect.
The more conclusive test would be to get a repair manual and a fuel pressure gauge and test your fuel pressure.
But the sound test is free. You could still pour in a bottle of HEET or any automotive fuel stabilizer followed five gallons of fresh gas to mix it and see if 3 gallons of bad gas really did you in. The gas thats in the ~ six feet of fuel line can be purged somewhat by disnnecting the outgoing side of the fuel filter and draining the gas in the fuel line into a waste container. That would have to be some really bad gas though.
You gotta open that valve up and spray starting fluid inside if you wanna diagnose the fuel system in general as the problem.
08 4.0 Sport 4x4
Last edited by mickblock; 06-17-2010 at 05:07 PM.