4 Pieces Paradise Harbor Engine Spark Tester is a must have diagnostic tool for any engine with a spark plug, & can quickly and easily diagnose ignition/engine outboard motor issues or a fault in the fuel delivery system Black, flexible plastic connector hose for easy connection to spark plug. Clear transparent housing with replaceable bulb for easy checking. Tests for lack of spark condition. Tests for proper spark and continuity of the ignition circuit to a specific plug. Essential for trouble shooting all internal combustion engines. Easy to use, get results in seconds. Finds dirty spark plug connections, defective points, bad cables or connections, and more. Bulbs flashes when spark circuit is completed, indicates ignition system or fuel delivery problem. Simply connect between spark plug and spark plug wire. Works on all ignition systems including Distributorless Ignition Systems (D.I.S.).
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