no spark at center post on coil when cranking eng. replaced coil- starter seliniod-elect control unit-distributor.what else can be done?

Asked by Jul 12, 2017 at 08:34 PM about the 1989 Jeep Wrangler 4WD

Question type: Maintenance & Repair

89 jeep wrangler yj 6 cyl started ran 5 min, then sputtered, then ran good, then
sputtered, then ran good then died. replaced coil+selinoid +distributor+elect
eng control unit. still n0 spark.  put tester on coil wire then cranked eng no
spark to grnd , GOT one spark when ign was turned off. rotor turns when eng is
cranked dont think time chain is problem.  what else can be done?

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