I own a '84 F150 It has a 300 inline 6.I don't seem to be getting any fire.I have pulled the #1 plug and put it on more than one place on the block and nothing.I then pulled the coil wire put the plug in it and still nothing.I have 2 wires going into the coil neither of the 2 have any spark.I can't figure it out.There is a silver box under my dash(computer box of some sort)may this be my problem?If so how do I check it out?
Any and every comment is appreciated.Thanks Kenny

 

I had a similar problem once and it turned out to be the power supply. That aluminum box on the wheel well, drivers side. That is where mine was, but I had the 351. It could also be the coil. The coil is the cheaper of the two if you are going to use the trial and error method. Sorry I couldn't be more help, maybe someone else has a better idea.

 

The coil is more than likely the problem, I would change that first. One other easy thing to replace is the small module on the distributor, can't remember what it is called at the moment.

If you are interested I have a 1984 Wiring Diagrams book for cheap.

Good Luck

Michael

 

Did you find the problem?

 

It could very well be the ignition module on the front of the distributor as mentioned above. This is a common item to go out on Fords, I been through several on 3 different mustangs. They are easy to change and cost usaully about $30. I've had some go out while driving and I've had some go out when I tried to start the car which resulted in zero spark, similar to what you described.

 

Simular problem on 1987 crown vic coil or it might be the electroic ignition control module try coil first MSD blaster 2 is good little better power & economy

 

Most common ignition problem with ford is the ignition
module on the distributer.Ford has a recall and has a huge
lawsuit about this problem.It's from the excess heat which
cooks the module.It's rare that a coil goes bad.You can check
the coil with an ohm meter, if it's bad it should read real high
or OL open line.