1806Spark Plug Tester


1. Probe type tester checks high tension supply to spark plug.
2. Check dead spark plugs in automotive.
3. Suitable for all spark ignition engines.
4. Quick and simple fault diagnosis.
5. Plastic shockproof construction.


  1. Start engine.
  2. Remove protective cover from tester probe.
  3. Touch spark plug connector or ignition cable with tester probe.
  4. Neon indicator, in clear section of tester body, will glow to indicate presence of high voltage.
  5. Replace probe cover after use.