A spark plug tester is a diagnostic tool used to check the functionality of a spark plug and ignition system. It helps detect faults in spark plugs, ignition coils, and related components by visually displaying the presence of a spark.

Simply connect the tester between the spark plug and plug wire. If the spark is strong, the tester will light up or mirror the spark, indicating that the ignition system is functioning properly.

Yes, many of our spark plug testers, such as the inline spark tester and spark tester for small engines, are designed for use on smaller engines like lawnmowers, chainsaws, and generators.

We offer a wide variety of testers, including inline spark testers, spark plug wire testers, ignition spark testers, spark plug and coil testers, and more. Each tool is tailored to specific diagnostic needs for different engine types.

Yes, our testers are designed for ease of use. Whether you’re a professional mechanic or a DIY enthusiast, you can easily diagnose engine issues by following simple steps to connect the tester and observe the results.

Using a spark plug coil tester or spark plug checker, you can identify if the spark plug or ignition coil is malfunctioning. If the tester does not light up or display a spark, it’s likely that the component is faulty.

Yes, our testers are compatible with various engine types, including those found in cars, trucks, motorcycles, and more.

A spark plug tester helps save time and money by quickly diagnosing issues with your engine’s ignition system. It’s an essential tool for anyone troubleshooting engine performance problems.

Yes, our testers are built to last, featuring robust materials like nickel-plated shafts and long-lasting internal bulbs to ensure durability and reliability during use.