Upgraded 12V 24V Spark Plug Tester Tool for All Gasoline Vehicles

The spark plug tester's test hole diameter is 12mm, making it widely compatible with almost all 12V/24V gasoline vehicle spark plugs, such as 14mm and 16mm spark plugs. As long as the diameter of the bottom of the spark plug inserted into the test hole does not exceed 12mm, it can be used.

In the automobile ignition system, the high-voltage ignition coil generates a high-voltage, which the spark plug diverts from the high-tension ignition coil into the cylinder engine. The spark between the spark plug electrodes will ignite the mixture. The spark plug tester can determine the quality of the spark plugs by the strength of the spark.

1. To judge the quality of the spark plug, a straight line of the spark indicates it is good, while an intermittent spark is not good.
2. To judge the aging degree of the spark plug, a bright purple spark is good, while a dark red spark indicates serious aging.
3. To compare spark plugs of different brands and specifications, at the same frequency, it is better if the sparks gather strongly and the sound is loud.

The spark plug tester has an adjustable test hole that uses a knob-type copper ring design. This allows the socket height to be adjusted, making it compatible with spark plugs of different heights. It is widely compatible with all 12V and 24V gasoline vehicle spark plugs (nut diameter: 14mm/16mm), including those used in German luxury cars (e.g., VW, Audi, Mercedes-Benz, BMW, Porsche, Ferrari) as well as crankshaft engines and motorcycles.

The spark tester ignition coil tester has two test holes, allowing you to test and compare a brand new spark plug and a spark plug to be tested simultaneously. This enables you to judge the performance and ignition intensity of the old spark plug by comparing it to the new one, and determine the aging of the spark plug through the color of the spark. Replacing bad spark plugs can improve engine performance.

The spark plug tester can simulate actual engine speeds, with a range of 0 to 6000rpm/min. The working frequency can be adjusted as required, with higher frequencies resulting in stronger spark intensity.

The spark tester features a high-voltage indicator light and a buzzing sound prompt to help you determine the test frequency. The tester is made of high-quality ABS engineering plastic, which is resistant to impact, heat, and low temperatures, ensuring it is safe and reliable.

The spark plug tester is designed with a protective cover to effectively prevent accidental touch and ensure safe operation during the test. Note that the voltage is very high during the test, so do not touch the spark plug to avoid electric shock, and always cover the protective cover before testing. After the test, the switch must be turned off before removing the spark plug.

The spark plug tester is easy to use - just insert the spark plug into the test hole, close the protective cover, connect the power supply, and adjust the working frequency to start the test. You can easily and intuitively observe the spark plug test status through the protective cover.

Note that our spark plug tester is designed for automotive spark plugs and may not be compatible with other types, such as those used in chainsaws, lawn mowers, etc. It is recommended to try the tester with your specific spark plugs to ensure compatibility.

We offer a 3-year product service, and our professional technical team is available to help you with any questions or issues you may have.

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