1985 Chevy S-10 no spark

Tiny
JOHN AUSTIN
  • MEMBER
  • 1985 CHEVROLET S-10
Electrical problem
1985 Chevy S-10 6 cyl Two Wheel Drive Automatic a lot miles

coil, ingition module, pick up coil are all good.I have 12volts at coil, but no spark!
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Tuesday, December 1st, 2009 AT 7:30 PM

1 Reply

Tiny
JDL
  • EXPERT
Welcome to the forum, if the coil is separate from the cap, take coil wire loose from cap, hold close to engine ground, engine cranking, does spark jump, if so, suspect the cap or rotor. Use testlite on coil negative terminal, engine cranking, the lite should pulse.

If the coil is in the cap, use a teslite on the tach terminal, it should pulse, engine cranking. The cap and or rotor could also be an issue.
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Wednesday, December 2nd, 2009 AT 9:52 AM

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