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Old 11-22-2010, 02:25 AM
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gm hei prob

to start with i flooded the engine couple days ago let it sit over night try'd to start it nothing like no spark so i pulled the plugs they were fuel foul'd so i replaced them try'd starting again nothing pulled 1 plug wire did spark test its got no spark at all the dist only has like 60 miles on it never had any prob with hei till now so i got no clue of what to check first

it ran couple min before i shut it off an try'd started it again then it flooded

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Old 11-22-2010, 06:26 AM
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To begin with, check to be sure the HEI has battery voltage w/the key "ON", engine "OFF". If there's no power, the circuit is bad.

Be sure the rotor has been installed (don't laugh- guys have spent hours on an engine missing the rotor).

If it has battery voltage (not less- the HEI needs 12 VDC at least for a good spark) and a rotor, but still no spark at the plug, the coil and module would be the next things to check.
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Old 11-22-2010, 07:31 AM
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Also check any wires that go into (underneath) the dizzy cap. Since it was running, maybe something came off from vibration.
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Old 11-22-2010, 04:06 PM
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its getin power to the dist an ya the rotors there

tho i did notice that the coil's black wire i think its a ground was smashed the cap/dust but looks to have ben that way for bit
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Old 11-22-2010, 06:41 PM
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just checked under the cap every things still hooked up nice an tight
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Old 11-22-2010, 07:46 PM
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g m hei problem

go to the junk yard pick up a ignition module swap it in.when they go there is no warning. make sure you get the one with the same amount of pins it only takes a few minutes to change
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Old 11-22-2010, 10:57 PM
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was kinda thinkin of that ill give it a try
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Old 11-25-2010, 02:00 AM
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http://www.chevelles.com/techref/ftecref5.html

Second half of article.
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Old 11-25-2010, 02:30 AM
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You donít have a pacemaker, Ďcause we are dealing with 50,000 volts and I donít want anyone to have their ticker "vapor lock", if you know what I mean. You do not want to "catch a spark" even if youíre completely healthy. It hurts, especially if you are leaning over the fender and the spark grounds through your pants zipper.
i can tell you from experience.. catching a spark through your beltbuckle in contact with the fender is a rather painful experience..

that article is some very interesting reading...
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Old 11-25-2010, 05:14 PM
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fixed the po put the coil contact in wrong to were it had to jump to the rotor.i fixed that put it back together has hot spark put the plug wire back an it fired right up
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