Compare Two Spark Plugs Side by Side Under Simulated Engine Speeds
The H90 fires two spark plugs at once so you can compare their ignition strength while simulating real engine conditions, with the simulated RPM shown on a digital display. It is intended for spark plugs from 12V gasoline vehicles.
- Dual Test Sockets
- 500–9000 RPM
- Height-Adjustable Sockets
- Battery Clamp Power
- Digital Display
Hauptmerkmale
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Dual-Socket Testing
Test two spark plugs simultaneously to quickly identify a faulty plug.
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Adjustable Socket Height
Accepts standard spark plugs as well as the longer plugs used in BMW, Volkswagen and Audi vehicles.
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Battery Clamp Connection
No power outlet needed; connect the clamps directly to the battery.
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Digital RPM Control
Turn the knob to set the simulated speed and read the value on the display; different speeds represent different working conditions.
Highlights
Two Plugs at Once
Each socket has its own signal lamp for side-by-side comparison.
Long and Standard Plugs
Raise the socket to fit longer spark plugs.
Powered From the Battery
Red and black clamps connect the tester to a 12V battery.
Speed on Display
The digital readout shows the simulated RPM as you adjust it.
Basic Version vs H90
| Basic Version | H90 | |
|---|---|---|
| Simulated RPM | 0–6000 rpm | 500–9000 rpm |
| HD digital display | No | Yes |
| Battery clip design | No | Yes |
| Adjustable socket height | No | Yes |
| Long spark plug testing | No | Yes |
| Safety protection cover | Yes | No |
What’s in the Box
- H90 main unit
- Battery clamp cable
- Bedienungsanleitung
Anwendung
- Fit the plugsAdjust the socket height and insert each spark plug into a test socket.
- Connect the clampsAttach the red clamp to the positive terminal and the black clamp to the negative terminal.
- Switch onTurn the switch and observe how the spark plugs work.
- CompareAdjust the simulated RPM and compare the plugs under different working conditions.
Good to Know
Caution
- Spark plug voltage reaches tens of thousands of volts during operation; never touch the plugs while testing.
- Switch off the power before inserting or removing a spark plug.
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