AUTOOL SPT306 5-Hole Digital Spark Plug Tester

The AUTOOL SPT306 is a professional digital high-frequency spark plug tester designed to evaluate the performance and ignition strength of spark plugs.

The tester simulates different engine operating speeds with an adjustable testing range of 200-9000 RPM. This allows technicians to check spark plug performance under different simulated engine conditions and identify weak, unstable or abnormal sparks.

With five testing holes, the SPT306 allows multiple spark plugs to be tested and compared efficiently. Technicians can compare new and used spark plugs or check several spark plugs during engine maintenance and inspection.

The digital display makes it easy to monitor and adjust the simulated engine speed during testing. The higher the testing frequency, the stronger the testing intensity, helping technicians evaluate spark plug performance more effectively.

The AUTOOL SPT306 is suitable for automotive repair workshops, motorcycle service centers, engine repair shops and professional technicians who need a convenient tool for spark plug inspection and comparison.

Main Functions

Spark Plug Performance Testing
Test spark plug ignition performance and help identify weak or abnormal spark conditions.

Spark Strength Comparison
Compare spark intensity between different spark plugs to help determine whether a spark plug is performing properly.

Multiple Spark Plug Testing
The five-hole design allows multiple spark plugs to be tested and compared efficiently.

Simulated Engine Speed
Adjust the testing frequency from 200 to 9000 RPM to simulate different engine operating conditions.

Digital RPM Display
Monitor the simulated testing speed through the digital display for easier operation.

New and Used Spark Plug Comparison
Compare a new spark plug with used spark plugs to help identify performance differences.

Wide Application
Suitable for spark plugs used in cars, motorcycles and crankshaft engines.

Simple Operation
Install the spark plugs, close the protective cover, connect the power supply and adjust the desired testing speed.

Important Safety Information

High voltage is generated during spark plug testing. Always close the protective cover before testing and follow the manufacturer's safety instructions. Do not insert or remove spark plugs while the power supply is connected. Do not touch the spark plugs or high-voltage components during operation.

• 5-Hole Spark Plug Testing – Test and compare up to five spark plugs efficiently.

• Adjustable 200-9000 RPM – Simulates different engine operating speeds for practical spark plug testing.

• Digital Display – Clearly shows the simulated engine speed for easier and more accurate operation.

• Spark Strength Testing – Helps evaluate spark intensity and identify weak or abnormal spark plugs.

• Comparative Testing – Compare new and used spark plugs to identify performance differences.

• High-Frequency Testing – Provides stronger testing intensity as the simulated RPM increases.

• Wide Application – Suitable for spark plugs used in cars, motorcycles and crankshaft engines.

• Simple Operation – Easy plug-and-test operation with adjustable testing parameters.

• Protective Design – Protective cover helps reduce the risk of contact with high-voltage components during testing.

• Professional Workshop Tool – Suitable for automotive repair shops, mechanics and engine service technicians.