Has fuel has spark and injector Pulse but no start

DEVANS278

MEMBER
1986 FORD F-150
5.0L
V8
2WD
AUTOMATIC
70,000 MILES

The trucks battery terminals were corroded causing tick to not start some times, replaced battery and cleaned terminals, now engine cranks every time but no start. I have 46psi at the fuel rail, I have 12v at all injectors and plenty of spark, I'm pulling my hair out over this one, I replaced eec replay and still nothing. Thanks for your help in advance

Friday, February 6th, 2015 AT 3:59 PM

3 Replies

JACOBANDNICKOLAS

MECHANIC
110,101 POSTS

A bad EEC will shut down both spark and fuel. As far as the issue, if you have spark and fuel, the timing is correct and the compression is good, it has no choice but to run. Is the spark to the plugs a hot blue snapping spark? Also, will the engine start for a couple seconds if you use starting fluid?

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Saturday, February 7th, 2015 AT 12:10 PM

DEVANS278

MEMBER
1 POST

Yes it's a bright purple and blue snap at the plug, my timing is spot on, the truck ran perfect, litteraly all I did was replace my battery and clean my terminal connections. And yes it will fire off with a quick spray of either, then die just as fast. So obviously I'm not getting fuel in there but yet again I have 12v at all the injectors, 46psi at the rail and power to the pump. Which is why I'm ready to pull my hair out I'm lost

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Saturday, February 7th, 2015 AT 12:18 PM

JACOBANDNICKOLAS