Your 'big engine' appears to be the 5.8 and not the 7.3 of the earlier years. Research shows the ign module bolted to the side of the dist. Back in the mid 80's Ford used an inferior rubber on the ign pick up inside the dist. It was subject to breaking down and shorting out the wires for the ign pick up inside the dist. That 'rubber' insulator was white in color. Now if your ign pickup is not white in color where the wires come out of it and is NOT cracked and breaking apart, I would tend to suspect the ignition module instead. Be sure to wipe off the base when installing and grease it with dielectric grease for proper heat distribution. That ign module might be dist mounted and those were more subject to failure than the modules that were firewall located. Parts book gives the dist mounted option subjecting the little parts to heat failure. If mounted on the firewall, I would not really suspect it to be bad. When it dies, Got spark?
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Today's Featured Article - A Lifetime of Farm Machinery - by Joe Michaels. I am a mechanical engineer by profession, specializing in powerplant work. I worked as a machinist and engine erector, with time spent overseas. I have always had a love for machinery, and an appreciation for farming and farm machinery. I was born and raised in Brooklyn, New York. Not a place one would associate with farms or farm machinery. I credit my parents for instilling a lot of good values, a respect for learning, a knowledge of various skills and a little knowledge of farming in me, amo
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