Compare Up to Five Spark Plugs Side by Side on the Bench
The SPT360 fires one known-good reference plug and up to four removed test plugs at the same simulated speed, so differences in spark continuity are easy to see through the transparent cover. It compares spark behavior in air, not under cylinder pressure or load.
- 1 Reference + 4 Test Plugs
- 200–9000 rpm Setting
- Backlit Digital Display
- Height-Adjustable Sockets
- 110 V / 220 V Input
Key Features
-
Reference-Based Comparison
Put a standard plug in the reference socket and the plugs under test in the other four for a clearer judgment.
-
Adjustable Simulated Speed
Set the firing rate with the RPM + and − buttons and read it on the backlit LCD. The setting is a bench firing rate, not real engine speed.
-
Long-Plug Support
Adjustable socket height accepts longer automotive and motorcycle spark plugs.
-
Enclosed Firing
The transparent protective cover keeps high-voltage sparks enclosed while all five positions stay visible.
Model Comparison
| SPT101 | SPT301 | SPT360 | |
|---|---|---|---|
| Test holes | 2 | 3 | 5 |
| Simulated speed | 0–6000 rpm | 200–9000 rpm | 200–9000 rpm |
| LCD backlit screen | No | Yes | Yes |
| Adjustable height / long plugs | No | Yes | Yes |
How to Use
- Insert the plugsPut the standard plug in the reference hole and the plugs to be tested in the remaining holes.
- Connect powerPlug the power adapter into the side port and confirm the indicator light turns on.
- Close the coverClose the transparent protective cover before testing.
- Start and adjustTurn on the power switch and set the working frequency with the RPM + and − buttons.
- CompareCompare firing continuity and consistency at the same setting; higher settings raise the firing rate.
Operation and safety details: SPT360 user manual (PDF)
Good to Know
Caution
- Plug voltage can reach tens of thousands of volts during operation. Never run the tester with the cover open and do not touch the plugs.
- Turn the power off before inserting or removing spark plugs.
- Results show spark behavior in air; confirm any suspected fault with the applicable vehicle procedure.
Care
- Use and store the tester in a dry, ventilated place.
- Check and tighten loose parts regularly, and replace aging wires or worn parts during maintenance.
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