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Coil arcing

Tiny
JIMMER60
  • MEMBER
  • 1994 GMC VAN
  • 120,000 MILES
Crank no start, no spark, check coil lead twelve volts, check coil white wire, got light flash(ICM good). Changed coil now it is arcing from post to body of coil.
Wednesday, January 4th, 2017 AT 6:25 AM

1 Reply

Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
The coil tower is cracked. You need to get another one. Also, if still not starting disconnect tachometer lead see if it does. Then check pick up coil resistance in distributor 400 to 1000 ohms.
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Wednesday, January 4th, 2017 AT 6:58 AM

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