I have a sportsman 700 efi it was running great then I let is sit for a bit went to start it and it runs like crap. could it be that it needs a tune up fowled a plug something like idles rough and smells like it isn't burning all of the gas

 

check the air box and exhaust to make sure no critters made any nest and theres blockage. welcome to forum.

 

thats what it sounds like to me its real easy for them to climb down the air box snorkel

 

Did you check your fual filter?

 

air box is clean took the filter off and ran it without one to see if it was it but still ran the same way I didn't check the fuel filter maybe that is it gonna give it a tune up maybe that will fix it could use one if that is not it I will be posting