Ya, you are killing the spark to your spark plug. Brings something else up, A Answer roost boost. Very popular in late 80's early 90's on dirtbikes and quads. Think of it as a amp for your ignition system. Your magneto needs RPM to make juice, the answer roost boost would give you full spark even at low rpm, giving you great exceleration and help keep your lights on. I hav'nt seen any in years and I dont think you can buy one new anymore, I've been looking for one for months now with no luck. What part of Mexico are you from if you dont mind me asking? I have family in Santa Ana Sonora, I will be going there this weekend to race in a Off-road Rally.