Yet another no spark thread. Sorry
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<TABLE class=tborder style="BORDER-TOP-WIDTH: 0px" cellSpacing=1 cellPadding=6 width="100%" align=center border=0><TBODY><TR title="Post 10809821" vAlign=top><TD class=alt1>crazyeddie: You wrote: "If you don't run a ballast resistor inline with a high-output coil the Duraspark module will toast eventually. I've even seen the epoxy potting in the back of the box get so hot it drips out onto the inner fender." </TD></TR><TR><TD class=thead colSpan=2>I installed Duraspark on my 75 engine recently. It used to have an old points system installed by the PO, which was shot. The epoxy is melting and dripping on mine. I have the ballast wire between the ignition and the coil. Is that wat you mean by the ballast resistor?</TD></TR></TBODY></TABLE>
Elder User
Joined: Aug 2011
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From: Cape Coral, Florida
Well, finally had a chance to get the new module. Have spark now. Now i have a different problem. The truck is trying to fire. I can hear the fuel igniting, i can see exhaust from the tail pipes. But it wont officialy start. It just keeps trying and trying. So maybe i flooded the engine? or timing? or something else?
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Joined: Aug 2011
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From: Cape Coral, Florida
Anyone care to try to talk me through this i now have no transportation and really need help? PM me for phone number or send number
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New User
Joined: Sep 2011
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Stinky I had to replace the ignition module. I also had to figure out the wiring harness in my truck and figured out that the guy who owned it before me added another harness that i didnt even need in the truck. So i had to bypass that wiring harness and simplify everything. Now that this has happened i know excatly what to look for and do. MAke sure everything has power. Look up the wiring diagram
Duraspark - Troubleshooting - BumpWiki
Duraspark - Troubleshooting - BumpWiki
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Joined: Dec 2008
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From: Fowlerville, Michigan
<TABLE style="BORDER-TOP-WIDTH: 0px" class=tborder border=0 cellSpacing=1 cellPadding=6 width="100%" align=center><TBODY><TR title="Post 10809821" vAlign=top><TD class=alt1>crazyeddie: You wrote: "If you don't run a ballast resistor inline with a high-output coil the Duraspark module will toast eventually. I've even seen the epoxy potting in the back of the box get so hot it drips out onto the inner fender." </TD></TR><TR><TD class=thead colSpan=2>I installed Duraspark on my 75 engine recently. It used to have an old points system installed by the PO, which was shot. The epoxy is melting and dripping on mine. I have the ballast wire between the ignition and the coil. Is that wat you mean by the ballast resistor?</TD></TR></TBODY></TABLE>
Some of the factory wiring harnesses have a ballast resistor built into them that can go bad - you can't find it unless you unwrap the two-miles of tape off the harness in your dash. Again someone correct me if I'm wrong, but I believe it's a heavier-gauge pink wire.
After I toasted a few Duraspark modules I picked up an MSD Streetfire ignition for about $100 - no ballast resistors required, and installation is pretty simple because they provide you with a wiring diagram that tells you which factory connectors to cut off and splice to the Streetfire unit. Plus you get multiple spark under 3,000 rpm and you can run whatever coil you want.
MSD sold me a malfunctioning unit and sent me a free one and I've been running it for two years now without a problem.
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