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Old 12-17-2003, 02:32 PM
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no fire!!

hey guys i just replaced my ignition coil,rotor and spark plugs in my 78 chevy k10 truck,i have fairly new spark plug wires but there is no spark to the plugs im sure this problem is something simple but i just cant troubleshoot it!need help guys im lost!!

thanks
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Old 12-17-2003, 02:54 PM
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What is your ignition- HEI, stock points, aftermarket, or?
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Old 12-17-2003, 03:03 PM
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If that's all you've done, check the hookup to the coil. The "-" terminal goes to the distributor and the "+' to the resistor if used and to the ignition switch wiring. Good Luck.
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Old 12-17-2003, 04:41 PM
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yeah i have a HEI coil in cap, another thing i ment to add is there is a thing on the firewall that looks like some sort of ground with 3 wires attached one goes to the alternater one to the starter and theres one wire that is cut and i dont know where this wire goes heres a pic of the THING on the firewall!!

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Old 12-17-2003, 04:47 PM
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Is there 12 volts to the Coil?

If there is, it may be your distributer pickup in the distributer.
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Old 12-17-2003, 05:31 PM
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If you have 12V to the power terminal of the HEI, do you have a spare one of these babies you can try?
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Old 12-17-2003, 05:37 PM
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yeah ill go get a tester and try testing it tommorow ive got a couple of modules so ill try those to!another thing id like to ask is could the ignition switch have anything to do with this?the engine cranks over fine just no fire!

thanks
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Old 12-17-2003, 05:41 PM
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Have you tested for 12Volts while cranking, as well as with the key just "on"?
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Old 12-18-2003, 09:15 AM
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Points

Depending on what kind of ignition you have, you may want to check and see if your points have slipped -- causes a lot of back firing/stalling/misfiring/no spark at the plugs
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