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- - frying your HEi coil and pickup (https://67-72chevytrucks.com/vboard/showthread.php?t=478748)

vtwinsport

08-08-2011 11:38 PM

frying your HEi coil and pickup

hey all,
just a note to all who may be installing better guages. I unknowingly fried my coil and pickup in my MSD streetfire ignition by accidently (??) grounding the tach lead while connected to distributor and in the engine.
Must have happened when putting the guages in.
Result was erratic stalling, hard starting, a nervous tach needle that looked like a heart monitor (up and down spikes).
See this link if you need info- very bottom of page is note about avoiding this. Also good info for testing out you dizzy pieces.

http://www.angelfire.com/realm2/84ca...coil/coil2.htm

motornut

08-09-2011 12:30 PM

Re: frying your HEi coil and pickup

3 Attachment(s)

guess i'm lucky mine didn't fry when i hooked up mine
was shorted to the side

Goldfinger

08-09-2011 06:54 PM

Re: frying your HEi coil and pickup

did you not disconnect the battery?

motornut

08-09-2011 08:50 PM

Re: frying your HEi coil and pickup

Quote:

Originally Posted by Goldfinger (Post 4836777)

did you not disconnect the battery?

me?mine was the tach signal

vtwinsport

08-09-2011 11:19 PM

Re: frying your HEi coil and pickup

1 Attachment(s)

just need to clarify that it was the cold and module under the rotor, not the pickup at the shaft of the rotor. see picture attached. flat black plastic piece between screws is module.

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