139qmb Chispa eléctrica, CDI-AC
18:13
GY6 AC vs DC Stator/CDI [ How does it work? What is best? ]
20:22
GY6 Electrical Troubleshooting Tutorial - “No Spark” Eliminator
16:15
Lawnmower Coil Pack Sparking System - Induction Coil, Transistor! (by Craig Kirkman)
18:00
139qmb Scooter engine
10:02
How to increase ignition power, simple and practical method
16:19
Engine Sensors - Basics. 3D Animation
16:50
No spark diagnosis and Explanation (GY6)
7:45