If you're having fuel-related problems (e.g., the engine won't start, it's running poorly), the issue likely lies in one of these areas and requires more than simply pressing a button:
* Fuel pump: It might be failing or not receiving power.
* Fuel filter: It could be clogged.
* Fuel injectors: They might be clogged or faulty.
* Ignition system: Problems here can prevent the engine from running even if there's fuel.
* Wiring: A problem in the fuel system's wiring could be the culprit.
To troubleshoot fuel problems, you'll need to consult a repair manual specific to your 1994 Ford F-150 with the straight-6 engine, or seek help from a qualified mechanic.