DUOYI Spark Plug Tester for 12v Gasoline Cars, 0-6000rpm Adjustable, 100-240v with Protective Cover, for 14MM/16MM Spark Plugs

Product Description

Upgraded Model - Comprehensive Testing for All Automotive Spark Plugs
Our spark plug tester is specifically designed to evaluate the performance and ignition strength of automotive spark plugs. Unlike other testers on the market, this upgraded model supports testing across the entire range of 12V gasoline spark plugs. This includes universal spark plugs and cup-shaped variants compatible with luxury German brands such as BMW, Mercedes-Benz, Audi, and Porsche, ensuring broader applicability.

Dual-Hole Comparison Testing & Adjustable Frequency
The tester features two test holes, allowing you to insert both new and old spark plugs simultaneously. By comparing the spark strength between them, you can assess the performance and ignition capability of the old spark plugs to determine if a replacement is necessary. Additionally, the device allows you to adjust the working frequency from 0 to 6000 RPM per minute. A higher frequency setting produces a stronger spark, providing a more accurate assessment.

Adjustable Test Hole Height & Safety Cover
The test holes accommodate spark plugs with nut diameters of 14mm and 16mm. Featuring a knob-type copper ring, the height of the test hole can be adjusted by rotating the ring counterclockwise, making it suitable for cup-shaped spark plugs. To ensure user safety, the tester includes a protective cover to prevent accidental contact with high-voltage components during operation.

Durable ABS Material & User-Friendly Design
Constructed from high-quality ABS engineering plastic, the spark plug tester is designed to be impact-resistant, heat-resistant, and durable under various temperatures. This ensures long-term reliability and performance. The device is easy to use; simply connect the adapter and start testing—no complex procedures are required, making it suitable for both experienced and novice operators.

Important Safety Notes
1. As a high-voltage device, avoid touching the spark plug during testing to prevent electric shock. 2. Always cover the protective cover before conducting tests. After completing the test, switch off the device before removing the spark plug and opening the protective cover.

3-Year Warranty
We offer a three-year warranty on this spark plug tester. The package includes: 1 spark plug tester, 1 power adapter, and 1 instruction manual.

product information: