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2003 Polaris sportsman 400

Old 05-25-2019, 06:54 PM
Weekend Warrior
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Default 2003 Polaris sportsman 400

Hey y'all, new here. I have a 2003 sportsman 400 that idles just fine and revs up to wot in neutral with no bog, nothing! When at ,what I guess is full speed it starts slowing Down like it has a governer. As it bogs down, If I keep it at 1/4 throttle it drives slow with no problem. It has pretty good power until I get up to speed then it's all down hill from there. I've checked for vacuum leaks and checked the filter. All seems fine. I sprayed carb cleaner around the intake and air box. No headway... Anyone have a clue!?
Old 05-26-2019, 10:48 AM
850 trailrider's Avatar
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Fuel pump ? pull fuel line off carb. check[safely] for steady steam of fuel while turning over? clogged screens in fuel tank, Bad gas? keep us posted
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