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Old 12-09-2004, 03:17 PM
Old Man Draggin'
 
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Hei Problem

Got a spark problem with my '63 Chevy 327. Just got it recently, have been impressed with how well it fired off, having not been exposed to Hei before. Drove it around to warm up for some tuning, pulled it in the bay and it died just as I stopped. (Lucky.) Hasnt hit a lick yet. Replaced module and coil with new, seems to have weak spark but not enough to fire it. Have read every thread, have checked voltage a Batt terminal, etc. Have been totally through the fuel system, everything is perfect. No flooding, not dry. Cleaned and checked gap on plugs for .045". Double checked firing order. I am a loss. Inspected cap, rotor, spring to coil output, everything seems fine. One thing I have heard is an apparent arcing when cranking, seems to becoming from inside distributor, cant see any arcs. Any suggestions appreciated. Pete.

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Old 12-09-2004, 03:26 PM
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Take the rotor off and check it very closely might have a tiny burn hole in it.
If you had one wire that had high resistance spark would have tried to find ground any way it could. Sometimes it burns through rotor.
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Old 12-09-2004, 07:53 PM
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Make shure you have battery voltage @ the distributor w the key on. Could also have a bad pickup coil in the dist. Or even a bad rotor button happens alot on hei.
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Old 12-12-2004, 05:11 PM
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weak spark

Secondary voltage has a new path probably caused by carbon tracking.
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Old 12-12-2004, 06:08 PM
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You beat me to it Deuce.

A faulty pickup coil will cause many different symptoms, from hesitation, miss, cap arcing, to backfiring, or no spark at all.

Good luck.
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Old 12-12-2004, 10:10 PM
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Thanks to all for your input. I found the problem. When I changed the coil, I left out the bent steel piece that goes under the coil and is the middle terminal in the three wire set from the module, etc. That accounts for the arcing, I think. Anyway, when I put that in, it fired off like a monster. Thanks again, Pete.

327's rule!
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