No Spark?

Tiny
RACEFAN966
  • MECHANIC
  • 5,029 POSTS
The wiring to the coil should be one pink wire and two white wires at the coil. Is this true on yours? If the wires are different colors on you truck then get back to me with the actual production date on the door. Thanks.
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Monday, July 13th, 2020 AT 1:17 PM (Merged)
Tiny
EIGNA00
  • MEMBER
  • 7 POSTS
It's exactly like that! I see the pink one coming from the ignition switch but don't know where it ends inside the engine. The white one from the coil ends in a plug and measures around 24 inches long. Please get back to me soon, and thanks a bunch!
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Monday, July 13th, 2020 AT 1:17 PM (Merged)
Tiny
RACEFAN966
  • MECHANIC
  • 5,029 POSTS
Do you have a digital multi meter? I need you to check what the voltage is at both wires at the coil with the key on engine off. Let me kwow what you find and we will go from there.
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Monday, July 13th, 2020 AT 1:17 PM (Merged)
Tiny
EIGNA00
  • MEMBER
  • 7 POSTS
Hi,

Sorry I had not gotten back to you earlier. It turns out that the new ignition module I had just bought was bad, so when I replaced it, it started up perfectly ;)
So I appreciate your help anyway, but I solved my issues for now.

Again, thank you very, very much.

Angie.
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Monday, July 13th, 2020 AT 1:17 PM (Merged)
Tiny
RACEFAN966
  • MECHANIC
  • 5,029 POSTS
Thanks for the date and glad to hear it runs again. If there is anything more just ask.
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Monday, July 13th, 2020 AT 1:17 PM (Merged)
Tiny
JOHN AUSTIN
  • MEMBER
  • 1 POST
  • 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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Monday, July 13th, 2020 AT 1:17 PM (Merged)
Tiny
JDL
  • MECHANIC
  • 16,098 POSTS
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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Monday, July 13th, 2020 AT 1:17 PM (Merged)

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