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Dirt Bike Discussions By Brand
Canadian Daves JustKDX
carb needle
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[QUOTE="Canadian Dave, post: 157714, member: 16102"] Ya a BR7ES is certainly going to help. I’d expect to hear your bike is running poorly and pumping out smoke while it warming up. When your engine isn’t up to operating temp much of the fuel is entering the cylinder wet and not vaporized. The fuel condenses on cold parts in the engine. Raw fuel doesn’t burn well and produces a lot of smoke, which is basically unburned fuel. As the engine warms up the fuel is properly vaporized, more of the fuel is burnt and your engine will stop smoking so much. There more to it than that but lets keep it simple. Its worse when you initially start the motor and you need to use the choke. Because the engine isn’t up to temperature the fuel entering the crankcase and cylinder readily condenses. The choke basically dumps enough fuel into the system that some of it vaporizes and the engine can fire. Once running all that raw fuel needs to be burnt off. Don't worry about how your bike is performing while its warming up but rather how it performs once its up to normal operating temperature. David [/QUOTE]
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Dirt Bike Discussions By Brand
Canadian Daves JustKDX
carb needle
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