Hard to start, intermintant spark

Tiny
SFRANK6158
  • MEMBER
  • CHEVROLET
I just completed a frame-off resto on a 63 belair. Everything machanical and electrical is new.
The engine is a new 350 which ran great and then started to miss, then not start. I've changed the HEI dist. Starter, new plug wires, confirmed timing and unhooked all of the wiring to the alternator and the rest of the car. I still have great compression in all of the cylinders and everything is moving the way it should. I am dropping to just over 9 volts while cranking. How much voltage does the HEI need, and what else could be causing this problem. This is the 3rd HEI dist. All with the same problem. Fuel is OK.
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Friday, April 13th, 2007 AT 9:28 PM

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Tiny
RASMATAZ
  • MEMBER
I would say remove the old resistance wire and rewire it from the switch to the HEI

The HEI takes full battery voltage to function properly. The HEI coil throws out a higher spark than the cylindrical coil. Makes sure you put that special grease under the ICM.

HTH Good Luck!
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Sunday, April 15th, 2007 AT 7:28 AM
Tiny
SFRANK6158
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Thanks for the tip on the dist. power, I had already changed the power source from the old to a new 12V line. The problem I discovered was corrected by re-routing plug wires and getting rid of some older gas that I had put into the new fuel tank. As soon as I put in some 92 oct. It fired right up and ran great.
Thanks


http://www.2carpros.com/forum/automotive_pictures/68531_383vortec_002_1.jpg

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Sunday, April 15th, 2007 AT 6:33 PM

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