Inline Spark Plug Tester for Vehicles

Core Specifications

Practical Diagnosis

This spark plug ignition tester can quickly and easily diagnose ignition and engine problems in your car, reducing engine failures or loss of power caused by ignition misfires. It also checks for bad spark plug connections, contact points, and cables.

Indicator Light

The spark plug checker features a sensitive indicator light that provides clear information about the spark and engine status. An intense bright white light indicates a good spark, while a jumpy, dull color indicates a weak coil or plug.

Safe & Reliable

The tester's plastic shell is hard and impact-resistant, making it durable and resistant to breaking. The built-in copper wire has excellent conductivity and can withstand high voltage current. The rubber protective cover offers insulation, water resistance, and dust protection, ensuring safety.

How to Use

1. Turn off the engine and remove the spark plug wires.
2. Connect the black connector to the spark plug.
3. Insert the metal end of the tester into the spark plug wire. The indicator light will flash if the engine is started and the ignition circuit is on.

Extensive Use

This versatile tester can diagnose various internal and external engines, including cars, trucks, motorcycles, lawn mowers, snow blowers, trimmers, and generators. Save time and money by diagnosing your car’s engine problems yourself, without the need to visit a repair store.