Hello my f150 friends I have a problem I replace the 5.0 engine in my friends 90 f150 we got everything hooked up then went to start it no fire the starter turns over but won't start please help I have checked over n over I even replace the dist out of the engine we replaced still no fire any ideas could it be a ground

 

ignition module comes to mind for some reason.


are you getting spark/fuel? check those things first and lets go from there.


also what year is your truck?

 

I m getting fuel just no fire it's a 1990 another problem is when it rains there is a leak under the dash on the passenger side floor board no ideas

 

ok, did you plug the ignition module in? try swapping the coils also. its possible 1 or both of them could be bad.


the leak, could be clogged cowl, bad window seal, and on that side of the vehicle (the only leaking when it rains really dismisses this one...) your heater core is bad.


you can test where its leaking by having a friend run a hose down into the cowl, then along the seal of the window to pinpoint the leak.

hopefully that gives you some stuff to look into, if that dont help then hopefully someone else will step in.

 

Make shure the fireing oder is right it should be non ho fireing oder don't know it off hand

 

Make shure your timeing is right to lot of people miss that step

 

Have done all that have been mentioned still no fire

 

I had a similar problem and it was a bad ecm. Try unplugging it. Then check for spark. If you have spark with it unplugged, then it's bad.

 

Had that same problem in my Jetta turned out to be the ignition switch. It was the only thing left in the ignition system that I hadn't replaced.

 

Thanks guys ill check all the input tomorrow