No Spark (electrical problem)

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Feb 10, 2004 | 07:38 PM

woodsmaster

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From: ny tug hill

electrical problem

help i have a 78 f250 4wheel drive i plow with thats not getting any spark I have what appears to be 12volts going to the coil ( red&green) and very weak test light reading on the ( green and yellow) side of the coil. should the green and yellow side of coil be 12volts with the key on?

help the snows building up)

Feb 10, 2004 | 09:36 PM

Franklin2

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From: Virginia

Try the ignition module mounted on the fender.

Feb 11, 2004 | 04:12 AM

woodsmaster

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From: ny tug hill

about two mounths ago i had a similar problem the truck would run about 15 minutes then quit,when i changed the ignition module its been fine up until now. recently i changed the coil and ignition switch but still same problem no spark.

Feb 12, 2004 | 09:43 PM

Franklin2

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From: Virginia

Some people have problems with aftermarket modules(that's the rumor anyway). I wonder if a Ford module from the junkyard would work?

Feb 12, 2004 | 10:54 PM

bob arrington

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From: alaska

given that many years , it could be the pick up coil in the dizzy ,just replaced my dizzy for $40 bucks , cured it ,bob

Feb 13, 2004 | 03:18 AM

woodsmaster

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From: ny tug hill

Hey guys i figured it out first i had the module i bought two months ago tested and they said it was no good and gave me a new one . but get this still no spark so i got my buddys old 77 chilton book and started testing wires and low and behold my rotor isnt turning but the cam is. there is wear on the dist. gear so im gona change the gear and see what happens