Weak HEI - Team Camaro Tech
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post #1 of 2 (permalink) Old Mar 3rd, 04, 12:57 PM Thread Starter
Tech Team
Join Date: Oct 2002
Posts: 38

I have a very old H.E.I. dist. that I have used on alot of my engines for a long time. I recently built a high performance 350 and used this same dist. again. Can it put out lower than original voltage resulting in a weak spark and not a good burn in the combustion chamber without actually going out all togeather.
clayjames is offline  
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post #2 of 2 (permalink) Old Mar 3rd, 04, 03:56 PM
Senior Tech
Join Date: Mar 2002
Location: Austin, TX, USA
Posts: 5,277

Yes it is possible. One thing that can happen is the coil develops a crack allowing high voltage to leap out of the coil case to the coil core or other nearby component. You might inspect the coil for a white film in a spot near a pin hole or crack. But if the crack is between the coil form and the core you won't be able to see it. I suppose it is possible that the ignition module itself could lead to a weak spark condition.

68 Coupe, 350 w/ Edelbrock Performer RPM heads, cam, intake, 700R4, Dave's small body HEI
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