Seller notes

OBDResource Car Spark Plug Tester for 12V Vehicles Why is Spark Plug Tester Needed? Spark plug is an important component of the ignition system, which is to introduce tens of millions of volts of high voltage electricity into the combustion chamber, generating the electric spark ignition mixture, and cooperate with the ignition system and fuel supply system, so that the engine works generally speaking, the spark plug needs to be checked regularly and replaced in time. If not timely with the chan...

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