Spark Plug Tester


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High-quality high-voltage resistant wire, made of pure thick copper wire inside, can work under high voltage. Spark plug metalhead, easy to use, and durable. An engine spark tester is a diagnostic tool for any engine with a spark plug, which can quickly and easily diagnose ignition/engine outboard motor issues or a fault in the fuel delivery system.

Suitable for all internal & external combustion engines, cars, trucks, motorcycles, lawnmowers, chainsaws, trimmers, snow-blowers, generators, etc. Simply connect the tester between the spark plug and the plug wire, if the spark is being sent, the tester will mirror the spark and light up – Find dirty spark plugs, defective points, bad cables or connections, etc.


  • Quickly diagnose ignition system problems, lack, or no spark condition.
  • Easily test ignition circuit continuity at each cylinder.
  • The tool connects between the spark plug and the plug wire.
  • Great for troubleshooting all internal combustion engines
  • Find dirty spark plugs, defective points, bad cables or connections, etc.

Car Spark Plug Tester Using Note:

1. Please Turn Off Power before you place spark plug
2. The Spark Plug Tester is a high-voltage detector, so do not touch spark plug with hand at work to avoid danger.

Car Spark Plug Tester User Manual:

1. Place the Spark Plug into tester hole 1 or 2;
If you want to compare the new spark plug and old one, place new spark plug into hole 1 and the old on into hole 2
2. Connect to power supply
3. Turn the key switch 4 clockwise to turn on tester, indicator 3 will light up, tester is now working at 1000rpm/min.
4. Again turn the key switch 4 clockwise,you can adjust the working frequency between 1000rpm to 5000rpm/min.
   The higher the frequency, the stronger the spark strength.


  • Type: Car Spark Plug Tester
  • Material: Plastic
  • Color: Black
  • Plug: EU Plug
  • Input: AC 100-240V
  • Output: DC 12V 1A
  • Size: 14.5 x 8.5 x 4.0cm/5.7 x 3.3 x 1.6 (L*W*H)
  • Weight: 220.0g/7.8oz

Package Includes:

  • 1 x Spark Plug Tester


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