1992 ford f 150 sometime will turn over but not start. but will start and run good the next day. what could cause .sometime starts sometime want. you never know

Ford luckily has a consumer support page and they can help you with your problem further out.

fuel pump or fuel filter.

THERE IS A CHIP ON THE IGNITION KEY THAT GETS WORNED DOWN FROM WEAR & TEAR AND THIS SOMETIMES DOES NOT LET THE PROPER CONNECTION GO THROUGH TO THE COMPUTER TELLING IT TO START THE CAR.HAVE AN EXPERIENCED MECHANIC TO DISCONNECT THE CHIP CONNECTION OR YOU WILL END UP GOING TO THE DEALER AND PAY FOR A KEY ABOUT $100-$150 OR PAY FOR ANOTHER KEY OR THE JOB WHICH WILL PROBABLY COST APPROX:$70-$85.HOPE THIS HELPS.

Check your EGR valve and your automatic choke,if equipped...May be sticking open.

Checking for vacuum leaks is good place to start since air is still used for regulation in the engine. You must check all of them. Check the fast idle control valve. It may be dirty or the vacuum hose are disconnected or has a hole or tear. Check as well loose wires or corroded ones since the sensors may not be working correctly due to electrical issues.

sounds like it is starving for fuel. replace your fuel filter, it could be clogged.

Remove, clean real good and reinstall battery cables snugly. Good Luck - Ned

i got a 6 cylinder ford truck when i drive it with the first tank it loose power. then i push the second tank and it runs normal .

have you checked the ignition modual

check the coil !!