Test 3 - Spark Plug Wire Resistance

Plug Wire Resistance:

^ Remove distributor cap from distributor.

^ Check for spark plug wires firmly seated on cap.

^ Disconnect spark plug end of suspect wire(s).

^ Measure resistance from terminal in cap to spark plug terminal.

^ Reinstall distributor cap and connect spark plug wire to spark plug.

CAUTION: Do not, under any circumstances, puncture a spark plug wire when measuring resistance. Measure only as instructed.


^ Was resistance less than 7000 ohms per foot?


YES -- Spark plug wire resistance OK.


NO -- Replace spark plug wire(s).