Ignition circuit

1992 CHEVROLET 1500
189,000 MILES • 5.7L • V8 • 2WD • AUTOMATIC
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STESAL
  • MEMBER
  • 1 POST
The engine will turn over but there is no spark. also, this truck was in the hands of someone with very little experience and they kind of hacked things up. Where do I start to determine the power source to the coil and distributor?
Oct 19, 2017 at 11:49 PM
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PATENTED_REPAIR_PRO
  • ✓Experienced Mechanic
  • 1,853 POSTS
The pink wire at the distributor and ignition coil should be hot with battery voltage (twelve volts) from the ignition switch when the key is on both run and start. the ignition switch is fed from the battery along the red wire going into the ignition switch.
Oct 20, 2017 at 12:25 AM
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STEVE W.
  • ✓Experienced Mechanic
  • 15,370 POSTS
Most likely suspects are the ignition module or pick-up coils.
Power to both comes in on the pink wire, the module is fed through the coil.
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Oct 22, 2017 at 12:36 AM
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