coil arcing

1994 GMC VAN
120,000 MILES
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JIMMER60
  • MEMBER
  • 1 POST
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.
Jan 4, 2017 at 6:25 AM
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HMAC300
  • ✓ASE Certified Mechanic
  • 48,601 POSTS
  • ASE Certified Mechanic
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.
Jan 4, 2017 at 6:58 AM
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