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Old 09-11-2015, 01:20 AM   #16
chevyguyase
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Join Date: Aug 2015
Location: st charles missouri
Posts: 219
Re: 1959 gmc ignition, starting problem

There are a few tests you can run without a helper. Make sure the hot wire is hooked to the + side of the coil. Turn your ignition to the run position and make sure you have about six volts at the + side of the coil. Place the volt meter so you can read it while pressing the starter pedal, you should have about 12 volts at the + side of the coil. once you know for sure you have voltage to + side of the coil. Hook up a spark plug & wire to the center coil tower. Remove the wire from the negative - side of the coil. Turn the ignition to the run position. Tickle the negative _ terminal of the coil with a jumper wire hooked to a good ground. DO NOT hold it on the terminal, just brush it with the alligator clip. It should fire the plug, if the coil is good. If the plug fires the problem is in the distributor. The rest of the system is good. For example, distributor is not turning, gap adjustment, points & condenser grounded. bad dist to coil wire etc. Run these test and let us know what you find so we can help you further.
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