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Rons86 · 05-26-2009, 12:25 PM

#1 check you have 12 v power at the dizzy then check fire at the button inside the cap below the coil with the cap off and hot wire connected to the cap (will have to have someone else turn the engine over while you hold a tester to the button) If you have fire there test at #1 plug by taking it out and putting the wire on it and holding it next to a ground source (usually the frame) hold onto the boot, not the plug. If the plug sparks all of them are firing and you have a fuel issue.

05-26-2009, 12:25 PM	#5
Rons86 Registered User Join Date: Sep 2008 Location: Holt, Missouri Posts: 94	Re: 73gmc - won't start #1 check you have 12 v power at the dizzy then check fire at the button inside the cap below the coil with the cap off and hot wire connected to the cap (will have to have someone else turn the engine over while you hold a tester to the button) If you have fire there test at #1 plug by taking it out and putting the wire on it and holding it next to a ground source (usually the frame) hold onto the boot, not the plug. If the plug sparks all of them are firing and you have a fuel issue.