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79 won't start

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Old Jan 18, 2009 | 01:24 PM
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Default 79 won't start

OK, I finally got back to working on my 79 Vette. It won't start.

I measured the voltage at the pink wire coming into the distributor. 12 volts with the key in the on position, drops to 8 volts when the engine is spinning.

Check the test light pattern at the tach terminal on the distributor. Starts out with a bright flashing light, then changes to a steady dim light after 1 second of engine spinning.

I had the ignition module tested at the parts store. Checked out OK. I have it installed with plenty of dielectric grease.

Truly puzzled.

What is going on here?
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Old Jan 18, 2009 | 02:04 PM
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check for spark at the plug wire ends and also the coil wire , all you need is air, fire and fuel......
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Old Jan 18, 2009 | 03:20 PM
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Originally Posted by midyearvette
check for spark at the plug wire ends and also the coil wire , all you need is air, fire and fuel......
No spark at the plug wires, tried that first.
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Old Jan 18, 2009 | 03:25 PM
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Originally Posted by emccomas
No spark at the plug wires, tried that first.
Bad coil?
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Old Jan 18, 2009 | 05:41 PM
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Originally Posted by my 76 ray
Bad coil?
Tried 3 coils, including a brand new one. The concensus seems to be that I need 12 volts while starting. 8 volts ain't gonna cut it. I'll wire the BAT terminal on the distributor directly to the battery and see what happens.
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