My coil is arcing from secondary to the primary terminals.Truck wwas fine until the valet parking left my key on and ran my battery down.Since then truck misses.a day later it died and would not start.friend was under hood while I tried to start it,he saw coil acing.so i went and bought new coil,put it on.(I was alone then)truck started right up.I closed hood,(I did not think to look at coil to see if it was sparking).still had miss but i thought it might be something else.(new coil right? surely that was'nt problem,right?)couple months later had hood with truck running to check ATF.Coil is arcing!took coil back to auto zone,put new coil on closed hood(my ******* didnt check it again!)still had miss.couple weeks later hood up while running,ARCING!WTF? I was using a coil for a 72 ford (points type) because my wiring was setup for the threaded terminals because I used to have a Mallory super coil on it(it had went bad by leaking its oil out) I thought a coil is a coil.Besides I didnt have the snap on plug for the duraspark coil.so i bought a duraspark coil and the snap on plug.put it on and closed the hood again without checking it(God,I'm such an IDIOT).still missing but more power! I figured miss was fouled plug.So one night I got home ,was hearing a ticking sound open hood with truck running,ARCING AGAIN?WTF?So obviously its not a bad coil(s).So my question is Did the Valet mess up my Duraspark Control box.Please do not say plugs bad/gapped wrong,bad rotor or cap or wires,All that was new and everything was running right before the Valet ran my battery down.

 

Wow, I think Shaun in Florida started this thread....

 

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I am going to say it. The spark finds the easiest path to ground. That is supposed to be the coil wire to the cap, the rotor under the cap, the cap, the wires and then the sparkplugs. For some reason it finds it easier to jump the terminal to the coil. I would check the plugs first.

 

Maybe we could start a new thread to discuss what the problem might really be, on a "friend's truck", of course, nudge, nudge, wink, wink. We're not allowed to discuss any possibilities with the plugs, plug wires, cap, or rotor in this thread.

On my friend's truck, I'd lean towards a bad boot on the high tension lead at the coil. The wire insulation may have started to break down, too. Once carbon tracking is established, replacement is the only fix. That's what I'd suggest for my friend's truck.

 

Change everything on the secondary side, plugs, plug wires, cap & rotor and I would do the coil again for S&G's
Dave ----

 

There is nothing wrong with tearing something apart several times till you figure something out. So the wires, plugs, etc are new. That means nothing in this day and age. I can't count how many new parts I have installed and they turned out to be faulty, wrong part number, etc.

 

Try just replacing the coil wire. Your old one most likely has lost continuity.

 

BZZZZZTTTTTT!!!!!!!!!

If I had my regular computer (it died last week) I'd include pictures and a link here.

We can discuss anything on these forums we like, so long as the proper permission is obtained.

I'm serious.