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The operating frequency can be adjusted according to the demand, higher spark frequency improves the test accuracy.
The height of the spark plug socket is increased by 8 mm compared to the height of the standard socket to meet your requirements for testing different spark plugs.
No need for a power outlet, can be directly linked to the battery for testing
OPERATION STEPS
Spark Plug Into Socket
Adjust the height and insert the sparkplug into the appropriate test socket
Connecting The Battery
Connect the battery clamp wires:attach the red clamp to the
Adjustment Parameters
Turn the switch and observe the working condition of the spark plugs.
Observe Spark Strength
Adjust the simulated RPM andcompare the different working conditions of thespark plugs.
James D.
Reviewed in the United States on January 28, 2025
Please bear with me. It WORKS with common-sense caution, but "110V/220V Car Spark Plugs Tester Tool for 12V Gasoline Vehicle" is confusing. No, this spark plug tester is NOT something you plug into your mains power in your shop/garage to find out if a spark plug is good. It IS better in my opinion by being something you use at your vehicle where spark plugs need to function. There's a blue metal cabinet that's held together with bare silver-colored screws like an electronic kit from my youth. There's a red LED display that you see and a knob with "Off" straight down and increasing RPM(?) firing available as you turn the knob clockwise. The LED does go from 500-9000rpm. The bezels around the two test holes screw up about half an inch to support the main body of the spark plugs. You see some green circuit board in there along with a coil of fine copper wire (probably a step-up transformer) and some conical-wound springs to contact the upside-down spark plug or plugs. Somewhere on top of the cabinet is a warning of high voltage in small print. ALL my "playing" with this item was BEFORE applying any power. I put one plug upside down in one test hole, clamped the two medium sized clamps to a 12 volt battery and plugged in the barrel connector to the left side of the cabinet. I treated this thing like it would bite me. I would NOT EVER be tempted to use this when it's raining or when I'm standing on wet ground! Either or both holes work MAKING ALL CHANGES WITH POWER DISCONNECTED. At the lowest knob setting the LED says "500" and the sound does get FAST sounding up to 9000 in the LED. In a slight shadow you can SEE the spark at the electrodes out there in the open. This is a quick way to be sure a plug works before installation, which is often a difficult chore on some cars. I'll use it, never touch it when powered, value and respect it, BUT ... there are safer ways and devices available.
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