I have a 89 F150 xl with EFI with a flooding problem i tried to test (key off, key on no start) it but i keep getting the no connection. I think its a sincere but i don't know which one it is. Its also running rich. The first time starting it, its fine but after running for a wail it will. Some times it doesn't want to start but simply holding the gas a little it starts up fine but may flood. what could it most likely be? Thanks

 

Leaky injectors?

 

thats one of my thoughts to i added seafoam in to my tank and it helped but still didnt stop it so i added some injector cleaner and just have to wait to see what happens next i did pick up some mils. but very little

 

ok so i even changed the spark plugs and wires (which was badly needed) but i still have the problem of it flooding the check engine like will come on (it doesn't flash) and the injector cleaner doesn't seem to be helping. any thoughts? Thanks

 

Pull the codes.
Whatever is turning on the MIL light is setting codes.
You need to retrieve them.

 

i try to pull the codes but it couldn't read any and told me to check the connection?and i ran the test four or five times what could that mean bad computer maybe? thanks

 

oh and as i was changing the spark plugs and wires i have one left over it doesn't look like the rest of them and i polled each one off at a time i can' t figure out where it goes? is it an exhauster one by chance?

 

Check your fuses.

 

fuses are fine but i haven't found any under the hood nor have i found the computer any one have some diagrams of the wiring harness or know where the computer is located?

 

one what? wire? did you Chang the one going from the center the distributor cap to the coil?

 

ya i pull them all the spark plug wires off one by one and match each one and replaced it but this one didn't match any off the distributor cap, nor can i find one any where were it might go. it looks normal on one end but the other has a short rubber covering but doesn't cover all of the metal that sticks out half inch maybe. Idk if that describes it very well but thats how i can think to put it. i looked at the box they came in and it didn't have a list of what wires came in it.

 

It may be a second coil wire for a different distributor/coil setup. That way, they can have a single part number for multiple applications and/or multiple years.

 

it must be thanks i plan on changing the distributor the one on its works but a new one never hurts thanks