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Old 11-09-2017, 12:30 PM   #7
The Rocknrod
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Join Date: Aug 2011
Location: China Spring, TX
Posts: 2,934
Re: Gmc v6 ignition problem

Originally Posted by Irishbleueyes View Post
There should be a ballast resistor wire that limits the voltage to about 9 volts. 12v into the coil damages the condenser and points. If there is still no spark after all parts are replaced correctly then the distributor is internally grounding somehow. Then you swap out the distributor for another. You need to get a service manual that guides you through trouble shoots. Or do more research online. There is another site you can also post for help. Jollys gmc guy site
Originally Posted by Sick5 View Post
I checked the incoming power to the coil and that 11 to 12 volts. is their a resister on the wire from the ignition switch?
See anything like this on the firewall?:
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