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Discussion Starter · #1 ·
I have a 2003 LTZ 400 and when I first got it was a champ and so fast but like a week later after having it, it started to bogg. It was weird because I only took it out once and the second time out is when I realized. So I cleaned the carb. It already had big jets because of the exhaust but I bought a rebuilt kit and did all that stuff and same thing happened. I got so frustrated I bought a China carb and still bogged. Then I took off the break sensor because I saw people do that and same story. The bogging only happens when I press the throttle hard to accelerate fast. But when I'm slow to the throttle it's fine. It also turns on right away. Any help or suggestions??
 

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Did you adjust the fuel screw? What Pilot jet is in it?
 

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I would try a bigger pilot.
 
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