1984 Jeep CJ7

Tiny
RYANCOCO823
  • MEMBER
  • 1984 JEEP CJ7
1984 Jeep CJ7 4 cyl Four Wheel Drive Manual

heres exactly what happened to my friends jeep. He was driving home from work and it all of a sudden backfired and died, and it wouldnt start up again.

we determined that it wasnt getting spark. We put new spark plugs in it, changed the coil, and changed the electronic ignition module.

please help us get it running.
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Monday, March 15th, 2010 AT 4:16 PM

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Tiny
RASMATAZ
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Get a helper disconnect a sparkplug wire or 2 and ground it to the engine at least 3/16 away from ground -have helper crank engine over-do you have a snapping blue spark? If so-you have a fuel related problem, check the fuel pressure to rule out the fuel filter/fuel pump/pressure regulator and listen to the injector/s are they pulsing or hook up a noid light. No snapping blue spark continue to troubleshoot the ignition system-power input to the coil/COP/coil packs, coil's resistances, distributor pick-up coil, ignition control module, cam and crank sensors and computer Note: If it doesn't apply disregard it.
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Monday, March 15th, 2010 AT 4:25 PM

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