Polaris 400 4x4 Idling issue

[Williejoe Neckbone]

Have a 400 4×4 have cleaned carb niow when u start it u have to have choke on and when u kick the choke off the engine speeds up then dies like it's not getting fuel plz helo

Edited April 9, 2019 by Ajmboy
Added ATV info into topic title

[Ajmboy]

Does it stay running if you increase the throttle with choke off?

[Frank Angerano]

Have you checked the fuel from the tank to make sure your flowing? Shut off valve, filter or screen inside the tank if there’s one? The fuel air mixture screw set properly? What did you set it at? 

If all above is good then sounds like a typical cleaning that was done but something was left behind. Go back and take the carb off, open it up and double check everything!  Make sure your reassembly of the choke was done correctly, the float was set at the proper height and the the fill  needle that allows fuel to enter the carburetor connected to the float has no junk in the port or on the needle itself.  Blow all the ports out with a little air pressure.  

When an engine starts to rev up it’s mimicking a choke condition starving for fuel.   

Not saying you did a bad job but sh** happens. I’ve done it and gone back before to find out that when I put the carb back on it worked fine. 

 

[fireslayer]

Check the drain plug in the bttom of the engine case. they are bad to work loose or even fall out. Causes an air leak and lean condition, fast idle, hard stating etc.