my dad gave me his 89 F150 L6 5spd 4X4 it has set up for 3 years, i got it start but wont ideal, and it will only start with starter when the starter fulid burns off it dies. the fuel pump relay is good. and it's getting fire. i traced the wired back to the fuel pump and and they are all in tact. all the fused under the dash is ok.

 

In English, please?

 

Find the hot wire going to the pump off the ignition switch and put a tester on it... its obviously coming on when you hit start but is it loosing power when the key turns back to run?

 

Or after sitting that long you may have gum instead of gas in the fuel lines/injectors. Pull at least 1 of your injectors to see if it is indeed injecting.

Are the plugs wet after you try to start it?

You can/should also do a fuel pressure test.

Just my $0.02

 

check your fuel filter as well it could be clogged after sitting not allowing gas through it wouldn't hurt o change it