I have 2005 500 suzuki atv

your carb is lean. you probably need to clean it and check for air leaks

new doesnt mean free from defects --floats may need adjustment or fuel adjustment not correct

Try adjusting the idle screw on the side of the carb. If this don't work you need to clean the carb the pilot key is blocked. Regards Jom...

bad carb, needs cleaned

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Running lean to much air to engine

Pilot jet may be t o small or your air screw isn't adjusted right try turning the air screw in all the way then turn out 1full turn test and adjust until it runs good if that doesn't fix it the pilot jet will need to be cleaned or brought up one size hope this will help you good luck

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your carb may need cleaned or a dirty air filter

sounds like your ignition timing is too far advanced allowing the petrol / air mix to part ignite in exhaust.

your going to have to adjust the throttle pin that goes down into the carb.It has a few notches on the needle when you take the assembly off take the clip off the notch its on and bring it down one notch should fix problem if not go down another until you hit the sweet spot.good luck

when engines not running turn the gas off . And it sounds like you need to adjust your throttle pin that goes into the carb take the clip off the pin and move it down one good luck