Spark testers with durable, high-temperature construction ensure reliable performance, even in demanding environments. Diagnose ignition issues with confidence.

We'll help you find the ignition tester that's right for your car so that you can diagnose your spark plug problems and get back on the road as soon as possible.

This inline spark tester is designed to diagnose problems with all ignition systems. This includes small engines like those found in chainsaws.

Harbor Freight buys their top quality tools from the same factories that supply our competitors. We cut out the middleman and pass the savings to you!

We have tested and researched the top spark plug testers on the market. Our list includes reliable and easy-to-use tools that help check ignition performance quickly and accurately. These …

Quickly diagnose ignition problems with this inline spark tester! Easy to use, accurate results, and compatible with all spark plug engines. A must-have diagnostic tool!

Dec 2, 2024 · After reviewing and testing several spark testers, we have narrowed down the top eight best spark testers on the market. These testers provide accurate results, easy to use, …

The Ram-Pro Engine Spark Tester Probe is a must have diagnostic tool for any engine with a spark plug, & can quickly and easily diagnose ignition/engine outboard motor issues or a fault …

Quickly and safely tests for proper spark on 2 stroke and 4 stroke engines (small engines & vehicles). Eliminates guesswork - 1 of 3 LED's will accurately indicate the condition of ignition …