Your's sounds like a regulator problem ( no or weak spark )I am having the same problem. I tried "pull" starting my bike today while my buddy towed me with his truck. When I let the clutch out in 2nd gear, it did nothing but made a VRMMMMMMMMMMMM sound. It didn't even try to fire up. My gas is good and was turned on. My battery is a bit low and it won't turn over unless I use jumper cables. Any suggestions from anyone?
You're running lean, and will eventually damage the engine.Hi guys, can help me..my 97 zx6r F model using fullsystem but it always backfire when realese throttle?how to fix this prob actually?