frying your HEi coil and pickup - The 1947 - Present Chevrolet & GMC Truck Message Board Network

vtwinsport · 08-08-2011, 11:38 PM

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

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

did you not disconnect the battery?

motornut · 08-09-2011, 08:50 PM

Quote:

Originally Posted by Goldfinger

did you not disconnect the battery?

me?mine was the tach signal

vtwinsport · 08-09-2011, 11:19 PM

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.

08-08-2011, 11:38 PM	#1
vtwinsport Registered User Join Date: Nov 2008 Location: edmonton, alberta Posts: 293	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 __________________ 76 Silverado, 2wd, long box, 350/th350, 3.42 posi, edelbrock performer 64cc heads, edelbrock 1405, 2101 intake, Hedman Headers, Comp Cam XE262 http://beerbreadbike.wordpress.com/

08-09-2011, 12:30 PM	#2
motornut 78K & 79C Jimmys Join Date: Nov 2009 Location: Ottawa Ont CANADA Posts: 7,901	Re: frying your HEi coil and pickup guess i'm lucky mine didn't fry when i hooked up mine was shorted to the side Attached Images __________________ John 1978 GMCJimmy4X4-350/203 1979 GMCJimmy4X2-305/350

08-09-2011, 06:54 PM	#3
Goldfinger Registered User Join Date: May 2010 Location: laurel hill Fl Posts: 645	Re: frying your HEi coil and pickup did you not disconnect the battery? __________________ 1985 C10 Custom Deluxe LWB 305/700r4 [ Goldfinger ] 1999 k3500 crew cab dually 6.5tdi/4l80e

08-09-2011, 11:19 PM	#5
vtwinsport Registered User Join Date: Nov 2008 Location: edmonton, alberta Posts: 293	Re: frying your HEi coil and pickup 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. Attached Images __________________ 76 Silverado, 2wd, long box, 350/th350, 3.42 posi, edelbrock performer 64cc heads, edelbrock 1405, 2101 intake, Hedman Headers, Comp Cam XE262 http://beerbreadbike.wordpress.com/



Register or Log In To remove these advertisements.

Register or Log In To remove these advertisements.