Bankerman

Thanks for the help guys. It does get much worse the hotter it gets. I will explore the electrical idea as well. In your opinion, should I start with a new coil? Thanks Again

Hi Guys, im new to the sport. Been an avid motorcyclist for 39 years, but have just embarked on a new avenue. I purchased a 2000 GasGas 321. Unsure of mileage or hours used. The bike starts in one kick, runs well, and appears to have been well taken care of.. After the bike gets hot, (after 30 or 45 minutes) it has a knock that I would equate to a spark knock. The bike idles smoothly. It makes this spark knocking noise under these conditions. .... when idling and you bump the throttle, letting off the throttle, and when the engine is revved up about 3 times idle, its does it continuously until you let off the gas. You can shut the bike off for 5 or 10 minutes and when restarted, it’s quiet again until it gets hot again. I run 100LL AV Gas at 75:1 with AMSOIL. *Also, id like to install a magnetic kill switch to replace the current button. Looks like theres only one wire running from the button to inside the frame. I assume that's the power wire and the button grounds against the bar to shut it off. is it as simple as connecting the power wire to the existing and then attaching the ground wire on the new kill switch to a frame ground? Thanks everyone! Greg