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I have a typical 94 f150 XL with the front tank rust issue, I've got that under control, but the truck won't run off that tank, is it a fuel pump and how could I quick check it
Second, it is helpful to know what engine you have, how many miles, and any major modifications it has. You can see the vital info for many of our trucks in our signatures.
OK, now the first thing you should do is check the fuel pressure with a gauge. If you do not have one, they can generally be rented at an auto parts store. You should have around 30-40 psi at idle.
Perhaps you could unplug the wiring from the pump and check with a volt meter whether it is getting power or not. If it is not, I would suspect you have a selector switch problem.