Reply To: Spark tester.

[kerry]

If you want to go “old school”, get a new spark plug, hose clamp, and a wire lead with an alligator clamp. Hose clamp the wire to the threads of the plug. Attach plug wire to plug, clip lead to a good ground on the motor, crank away. Worked for Grandpa, Dad, me, and my son. Yes, I have a Harbor Freight tester, but I can’t always see it in the light. I can hear a good spark “snap” with the homemade tester.

If you have too many, AND not enough, you're a collector.