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Dirt Bike Brands - Other
97 EXC jetting problems
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[QUOTE="DanS, post: 120753, member: 20849"] It took me awhile to catch on to the jetting vs premix ratio thing. When it comes to jetting you are working with fuel (gas) to air ratio. When you add more oil you end up with less gas in the same volume of fuel mix. The more oil you add actully makes the jetting leaner since the oil does not contribute to combustion. By running a ratio of 55-1 your carb jetting may have been on the rich side (more gas, less oil mixing with the air). If you increase the ratio to 40-1 or 32-1 you will find the jetting will seem leaner. First settle on a premix ratio then work with the jetting. You may find going to a 40-1 ratio will make the bike run how you want. [/QUOTE]
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Dirt Bike Discussions By Brand
Dirt Bike Brands - Other
97 EXC jetting problems
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