Features:
1.Dual hole detector have two testing holes, you can test two spark plugs meanwhile and and if you suspect any spark plug works improperly you could compare and test to make accurate judgment.
2.The hole is enlarged, suitable for more spark plugs, and the shrapnel is changed to more durable manganese steel!
3.The indicator light and the lampshade are more dazzling and safer!

Specifications
Usage: Test spark plug performance and ignition strength?

Application Range: 12V Gasoline vehicles car spark plugs

Main Unit Size:145*85*60mm
Main Unit Weight: 0.3kg
Main Unit Size:?17.5 cm * 9.8 cm * 7.0 cm

Power Adapter: Input 100-240V AC / ?Output 12V 1A DC
Power Adapter Plug Type: UK / EU / US Plug

Car Spark Plug Test principle:

In automobile ignition system, the high-voltage ignition coil generates a high-voltage (10000 volts or more), and the spark plug diverts it form

high -tension ignition coil into the cylinder engine, spark between the spark plug electrodes will ignite the mixture. The Detector could tell the

good spark plugs from the bad by the strength of the spark.

Using Note:

1. Please Turn Off Power before you place spark plug

2. The Spark Plug Tester is a high-voltage detector, so do not touch spark plug with hand at work to avoid danger.

User Manual:

1.Place the Spark Plug into tester hole 1 or 2. If you want to compare the new spark plug and old one, place new spark plug into hole 1 and
the old on into hole 2

2.Connect to power supply

3.Turn the key switch 4 clockwise to turn on tester, indicator 3 will light up, tester is now working at 1000rpm/min.

4. Again turn the key switch 4 clockwise,you can adjust the working frequency between 1000rpm to 5000rpm/min.

The higher the frequency, the stronger the spark strength.
Package Included:
1* Car Spark Plug Tester(with power adapter)