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Save Money on Gas: A misfiring spark plug can reduce fuel efficiency by up to 30%. This diagnostic tool helps you quickly identify faulty spark plugs or ignition coils, allowing you to fix the problem before it drains your wallet at the pump.
Prevent Costly Repairs: Catch ignition issues early before they damage your catalytic converter or oxygen sensors. A small spark plug problem left unchecked can lead to hundreds of dollars in emissions system repairs.
Easy Visual Diagnosis: Simply plug the tester inline between your spark plug and ignition wire, then start your engine. The built-in LED light flashes brightly with every spark—no flashing light means no spark. Clear, instant results anyone can read.
Universal Compatibility: Works on most gasoline engines including cars, trucks, motorcycles, lawnmowers, chainsaws, and small engines. Perfect for DIY mechanics and professional shops alike.
Safe & Reliable Testing: Test your ignition system without risking electrical shock or damaging components. The durable construction withstands repeated use in professional automotive environments.
Stop Wasting Gas on Bad Spark.
Did you know a single misfiring cylinder can waste up to 30% of your fuel? That's money literally burning away. The Spark Plug Tester helps you find and fix ignition problems fast—saving gas, saving money, and keeping your engine running smoothly.
Specifications:
Length: 270 mm (10.8 inches)
Material: stainless steel and plastic
Suitable for: Testing the car ignition system work
With Engine Off, Remove Spark Plug Wire
Attach Black Connector to Spark Plug
Insert Metal End of Tester Into Spark Plug Wire
Try to Start the Engine
If Ignition Circuit is Complete, Bulb will Flash
1 x Spark Plug Tester





