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02-18-2014, 06:09 AM | #1 |
Join Date: Feb 2014
Posts: 4
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Air filter, air filter box.
Hello. Got little problem with air filter box, air filter, and rich fuel mixture. Any tips how can i improve air filter box to get more fresh air? I got this air filter with bike. Is that filter not small for 250cc ( big bored to 300cc+). My air\fuel mixture screw was unscrewed 4 times. but i still getting rich mixture.
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02-18-2014, 11:34 AM | #2 |
Join Date: Mar 2009
Location: Sardis, BC, Canada
Posts: 25,977
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There`s nothing wrong with that style of air box; it should feed your engine just fine. BTW, the more you unscrew the pilot mixture screw, the richer it becomes.
What is the actual symptom? Does it bog when you open the throttle? Do you need to turn the pilot mixture screw out four turns just to make it run?
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Weldangrind "I figure I'm well-prepared for coping with a bike that comes from the factory with unresolved issues and that rewards the self-reliant owner." - Buccaneer |
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02-18-2014, 12:19 PM | #3 |
Join Date: Feb 2014
Posts: 4
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When i open the throttle quick it throws BLACK smokes plus when it get warmer it doesnt want to work properly. My spark plug like coal.
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02-18-2014, 10:02 PM | #4 |
Join Date: Mar 2009
Location: Sardis, BC, Canada
Posts: 25,977
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What happens if you have the pilot mixture screw turned out just 1/2 turn? Where is the clip on the jet needle?
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Weldangrind "I figure I'm well-prepared for coping with a bike that comes from the factory with unresolved issues and that rewards the self-reliant owner." - Buccaneer |
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02-25-2014, 08:40 PM | #5 |
Join Date: Dec 2009
Location: Alaska
Posts: 914
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big bores generally need leaner jetting to compensate for increased suction. try screwing in the idle screw and raising the clip on the needle
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