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Holly mixture adjusting screw
I have a Holly street avenger carb on a new 340 hp 350 crate motor. The carb is a 670. I am trying to adjust it and when i try to adjust the mixture screws i adjust the one on the drivers side and as i turn it clockwise to make the carb stumble and then turn it back it stops stumbling like it should.... When i do the passenger side of the carb i can turn the mixture screw all the way in and it doesnt even try to die or stumble?????????? Can anyone tell me what is going on?? Thanks
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