Spark plug tester, adjustable ignition coil test system, coil tester, ignition spark tester, vehicle diagnostic tool for

Adjustable Electrode Gap Function: The spark plug tester is equipped with an adjustment valve and a rotary knob, allowing the electrode gap to be adjusted to the needs of various vehicle models. This effectively prevents misfires and blown ignition coils.

High-Quality Materials: The use of metal terminals ensures durability and excellent electrical conductivity. This guarantees stable and efficient current transfer between the inline spark plug tester and the spark plug, thus improving measurement accuracy.

Easy-to-Read Design: The small engine spark plug tester features white lettering, making it easy to read the scale when measuring electrode gap values from 0 to 40 kΩ, even in bright light.

This easy-to-read design enhances usability and accuracy. Notes: This ignition coil tester tool is equipped with a rubberized ground cable, alligator clips, and springs for safe and stable high-voltage applications. To use, attach the alligator clip to the engine, connect the other end to the spark plug wire, and check the spark gap through the small viewing window. The larger the spark gap, the more powerful the ignition coil. Versatile use: The spark tester has a total length of 11.4 cm, a 50 cm long cable, and a diameter of 2.3 cm. It is compatible with a wide variety of automotive ignition systems and is ideal for vehicle maintenance, small engine inspections, ignition coil testing, and lawnmower maintenance.