Automotive Spark Plug Tester with Two Holes Spark Plug Analyzer Diagnostic Tool <p>The two-hole spark plug detector has two test holes, it can test two spark plugs at the same time, if you think the spark plug is not working properly, you can compare the tests and make an accurate judgment.</p> <p>Test the spark plug performance and ignition strength. Suitable for 12V gasoline car spark plugs.</p> <p>Adjustable Two-Hole Automotive Spark Plug Tester Diagnostic Tool for Spark Plug Analysis</p> <p>&nbsp;</p> <p>The automotive spark plug tester has the advantage of having two holes:</p> <p>With two test holes, the two-hole automotive spark plug detector can test two spark plugs at the same time. So, if you suspect a spark plug is malfunctioning, you can compare the tests and get a clear idea.</p> <p></p> <p>Use Testing spark plug performance and ignition strength</p> <p>&nbsp;</p> <p>Application: 12V gasoline car spark plugs</p> <p></p> <p>Principles of Automotive Spark Plug Testing:</p> <p>In an automotive ignition system, the high-voltage ignition coil generates a high voltage (10,000 volts or more) that the spark plug directs from the high-voltage ignition coil to the engine cylinder, and the spark between the spark plug electrodes ignites the mixture.</p> <p>The spark between the spark plug electrodes ignites the mixture. The detector can recognize the spark plug by the intensity of the spark.</p> <p>The spark between the spark plug electrodes ignites the mixture.</p> <p></p> <p>Precautions when using the spark plug tester:</p> <p>1) Turn off the power before installing the spark plugs.</p> <p>2) The spark plug tester is a high-voltage tester, please do not touch the spark plug with your hands when working to avoid danger.</p> <p></p> <p>Operating Manual of the Automotive Spark Plug Tester:</p> <p>1) Place the spark plugs into the No.1 or No.2 hole of the tester; If you want to compare the old and new spark plugs, put the new spark plugs into hole No.1 and the old spark plugs into hole No.2.</p> <p>2. Connect the power supply</p> <p>3. Turn on the tester by turning the key switch 4 clockwise, the indicator light 3 will light up and the tester will work at 1000rpm/min. 4. 4.</p> <p>4. 4. Turn the key switch 4 clockwise again to adjust the working frequency between 1000rpm and 5000rpm/min.</p> <p>&nbsp; The higher the frequency, the stronger the spark intensity.</p> <p></p> <p>Gasoline Vehicle Spark Plug Tester Parameters:</p> <p>Power Adapter Input 100-240V AC / Output 12V 1A DC</p> <p>Package Includes: 1 x Spark Plug Tester, 1 x Power Adapter</p> Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.