1991 Cherokee no spark

Answer 1

make sure ignition primary is connected to distributor or coil pack, whichever is used. if it is connected and still no spark, unplug primary connector. use a grounded testlight or a multimeter set on dc volts to check for voltage. if voltage is present, test light will glow or meter will give a digital reading. make sure key is turned to on while testing. check for secondary spark by removing a plug and grounding it on the engine while cranking. a strong spark should be present. if not, replace dirty plugs or open plug wires. to check plug wire, remove it and set the multimeter on ohms it should read 0 meaning wire is not open. make sure distributor has no cracked cap or corroded parts. refer to a manual for coil pack testing terminals. Unplug and reconnect the CPS connector at the rear of the engine. If it starts, plan on replacing it soon, as it will fail again.