Tempest introduces spark plug resistance tester

High internal resistance in aviation spark plugs is rapidly becoming a concern that many pilots and mechanics are beginning to recognize as a source of rough running engines and chronic magneto related problems. Realizing that a growing number of maintenance facilities and pilot/owners are incorporating a spark plug resistance check as part of their preventive maintenance, Tempest has introduced its AT5K resistance tester.

The Tempest AT5K resistance tester tests the internal resistance in all aviation spark plugs. Place the spark plug, barrel side down, over the contact post and touch the other lead end to the firing end of the center electrode. If the light is green, the spark plug resistance is below 4k ohm (thousand ohms). If both the green and red lights are on, then the plug is between 4-5k. This is acceptable for serviceable plugs, Tempest officials said. If only the red light is on, this indicates a resistance value in excess of 5k and the plug should be discarded and replaced.

For more information: TempestPlus.com

 

 

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