offers the highest quality to get the job done right. plug misfires occur when the jumping the gap of electrodes are inconsistent in timing, causing the engine to stumble or lose . This handy little tool helps you watch the gap in the plug tester to see whether or not you have inconsistent timing! HEAVY-DUTY CONSTRUCTION: Made only with the materials to allow you to test if your plug is working properly. Saves time & money by checking if the problem is actually in your ignition! Engineered with only the strongest highest-quality materials, the Plug Tester works to troubleshoot plug connections, diagnose misfire or miss, defective contact points, bad cables and more! like the Inline Ignition Tester were made to keep your vehicle running in condition. Works very with lawnmowers, motorcycles, small engine vehicles and many more! How to the Inline Ignition Tester: Remove the plug from the plug hole. Take the Inline Ignition Tester's indicator end and it to the plug wire boot. the other end to the plug through the plug hole. Test the by starting your engine. Watch the see through window in the Inline Ignition Tester for timing irregularity. jump the electrodes are inconsistent and indicate you need to replace the plug. If you are testing a no- condition, have a friend crank the engine. Stop losing to your engine! The Inline Ignition Tester analyzes engine stumble, loss and excessive smoke emission. Just the 3 simple steps above to check if your plugs are missing or misfiring. Features: Checks for ignition, no- conditions and strength at each cylinder Flexible connector hose for secure plug connection Delivers diagnosis in just seconds Transparent hose connector for easy-to-see diagnosis colour: black Material: plastic+metal Package Contents: 1 x Foolproof engines For the Tester NOTE: Dirty, clogged plug holes can a loss of . If engine loss is a problem for you - a Double-Ended Thread today, too! Only the above package content, other products are not included. Note: Light and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.