Hello dear screwdriver friends! I recently changed the spark plug of my dear scooter (to be exact yesterday). Since then I noticed an irregular blinking. I could not find out a lot yet, but it seems to me that it would happen depending on the speed of the engine. To the facts: I changed the old (disturbed) candle by an undisturbed (due to the assumption that the existing candle plug was disturbed). Maybe it’s just because, but For this I might need a tip on how to check the plug correctly for the resistance. Otherwise I wouldn’t know exactly what it could be. I would be very happy about the help of you/you all.