1970 Chevrolet El Camino Intermittent spark

1970 CHEVROLET EL CAMINO
88,000 MILES
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DBOGNAR3
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  • 4 POSTS
The vehicle will only spark once as soon as the key is turned. While cranking it will not spark. As soon as you let the key snap back it will spark. The coil was replaced and the problem still exsists.
Sep 19, 2013 at 10:31 AM
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SATURNTECH9
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Do you have a test light?
Sep 19, 2013 at 10:50 AM
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DBOGNAR3
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Yes, it has power when the ignition is in the on position. Iam cheching the spark at the coil.
Sep 19, 2013 at 10:56 AM
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SATURNTECH9
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Hook the alligator clip from the test light to the positive side of the battery.Then touch the negative side of the coil with the tip of the test light. Then crank the engine see if the test light flashes?
Sep 19, 2013 at 11:01 AM
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DBOGNAR3
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I will try that. It has power going in but not steady spark. It will flash only one time.
Sep 19, 2013 at 11:13 AM
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SATURNTECH9
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The positive side of the coil has power to it?Let me know if the test light flashes while cranking?
Sep 19, 2013 at 11:29 AM
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DBOGNAR3
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  • 4 POSTS
Yes the positive side has power when the key is on.
Sep 19, 2013 at 11:36 AM
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SATURNTECH9
  • ✓Experienced Mechanic
  • 30,869 POSTS
Now check the negative side of the coil the way I told you too.
Sep 19, 2013 at 12:00 PM
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