AUTOOL SPT101 · Dual Spark Plug Tester
Compare Two Spark Plugs at One Bench Setting
Compare two spark plugs at the same adjustable bench setting and observe visible firing differences side by side. SPT101 simulates rates up to 6000 rpm, while the transparent cover keeps the test area visible during operation. The supplied wide-input adapter supports the specified bench power connection across common mains regions.
- 2-Plug Side-by-Side Test
- Up to 6000 rpm Bench Setting
- Transparent Safety Cover
- 100–240 V Adapter Input
- Gasoline-Car / Motorcycle Plugs
Key Features
Visible Dual Spark Plug Comparison with Adjustable Firing Rate
Two-Plug Side-by-Side Comparison
Test two spark plugs at the same time and compare spark performance more efficiently than single-plug inspection.
Adjustable Working Frequency
Turn the rotary switch to adjust the simulated working frequency. The tester supports engine simulation up to 6000 RPM.
Adjustable Engine-Speed Simulation
At the selected simulated engine-speed setting, users can evaluate visible spark strength and plug performance side by side.
Protective Cover Design
The transparent cover helps protect maintenance personnel while still allowing clear observation of the spark plug test status.
Rotary Test Control
Use the rotary switch to adjust the simulated operating speed while checking spark plug performance.
Body Size and Weight
Body dimensions: 145 × 85 × 113 mm. Weight: 354 g.
3 Years Warranty Support
Main unit: 3-year warranty. Standard accessories: 1-year warranty. Warranty Policy.
Safe Use
Keep the Cover Closed During High Voltage
Close The Protective Cover
Always close the transparent protective cover before testing. The tester is designed for observation through the cover, not open-cover operation.
High Voltage Warning
Up to 1000V voltage may be generated during testing. Do not touch the spark plug, socket, or exposed test area while the tester is powered.
Power Off Before Handling
Do not insert or remove a spark plug while the power supply is connected. Turn off the tester first, then place or remove the spark plug.
Use The Correct Adapter
Use a compatible power adapter. The manual specifies 100-240V AC input and 12V 1A DC output for the SPT101 tester.
Supported Spark Plugs
SPT101 is suitable for most 12V gasoline vehicle and motorcycle spark plugs. Confirm fitment before testing unusual or non-standard spark plugs.
Dry Storage Recommended
Store the tester in a dry place when not in use. Avoid hot, humid, non-ventilated, or corrosive environments.
Compare the Spark Results
Compare both removed spark plugs in air under the same setting, then confirm any suspected ignition fault with the vehicle procedure.
Specifications
SPT101 Specifications
| Test Setup & Capacity | |
|---|---|
| Working Principle | Digital Sensing |
| Simulated RPM | 0-6000rpm |
| Test Hole Position | 2 |
| Air-Bench Spark Observation | Yes |
| Adjustable Bench Firing Rate | Yes |
| Power & Operating Conditions | |
| Input Voltage | 110V/220V |
| Ambient Temperature | 0-45℃ |
| Safety & Display | |
| Safety Protection Cover | Yes |
Manual & Support
Find the Manual and Setup Guidance
AUTOOL SPT101 User Manual
Open the PDF manual for AUTOOL SPT101 dual-hole spark-plug comparison, frequency adjustment, engine-speed simulation, protective-cover use, adapter setup, safety and troubleshooting support.
Package Contents
See What Comes in the Box
- Main UnitAUTOOL SPT101 spark plug tester
- Power AdapterAdapter; version may vary by plug option or region
- DocumentationUser manual
- Retail BoxAUTOOL SPT101 package box
- ReminderAdditional accessories depend on the selected product option.
Buyer Questions
Spark Plug Fit and Comparison Questions
What Is AUTOOL SPT101 Used For?
SPT101 compares the visible spark behavior of two removed plugs in air at the same adjustable firing-rate setting. Confirm suspected faults under the applicable vehicle procedure.
Which Spark Plugs Can SPT101 Test?
SPT101 is suitable for most 12V gasoline vehicle and motorcycle spark plugs. For unusual, modified, or non-standard spark plugs, confirm fitment before testing.
How Do I Use The SPT101 Spark Plug Tester?
Place the spark plug in tester socket A or B, close the protective cover, plug the adapter into the side power interface, connect power, turn the rotary switch clockwise, adjust the simulated RPM, and observe the spark condition through the cover.
Can SPT101 Test Two Spark Plugs At The Same Time?
Yes. SPT101 supports dual-hole simultaneous testing, which lets you compare two spark plugs side by side and observe differences in spark strength more efficiently.
What Is The Working Frequency Range?
The tester’s control is marked with a simulated speed up to 6000 rpm. Treat this as the bench firing-rate setting and compare plugs at the same position; it is not the engine’s real speed or load.
What Power Supply Does SPT101 Need?
The SPT101 manual specifies a power adapter input of 100-240V AC and output of 12V 1A DC. Use a compatible adapter and confirm the plug type for your region before ordering.
Is SPT101 Safe To Use?
Use it carefully. Up to 1000V voltage may be generated during testing. Always close the protective cover before testing, do not touch the spark plug or test socket during operation, and power off the tester before inserting or removing spark plugs.
Can I Insert Or Remove Spark Plugs While Power Is Connected?
No. Do not pull out or insert the spark plug while the power supply is connected. Turn off the power first, then insert or remove the spark plug.
What Is Included In The Package?
Package contents: SPT101 main unit, retail box, user manual, and power adapter. Plug type or adapter version may vary by selected option or destination.
What Is The Difference Between SPT101, SPT105, SPT301, And SPT360?
- SPT101 is a compact dual-hole model with rotary RPM adjustment.
- SPT105 adds adjustable test hole height.
- SPT301 uses three-hole comparative testing with a digital display.
- SPT360 uses five-hole comparative testing with a digital display for users who need to compare more plugs at once.
How Should I Maintain And Store SPT101?
Check connected parts regularly and tighten loose parts in time. Avoid rough surface wear, corrosive liquids, hot or humid storage, and non-ventilated storage areas. Keep the circuit and wires in safe condition and replace aging wires when needed.
How Long Is The Warranty?
Main unit: 3-year warranty. Standard accessories: 1-year warranty. Warranty Policy.
