Sportsman 700 EFI Bogging

[ryan1234]

Hi there

I am new to the forum and am looking for some help. I have a sportsman 700 EFI. I believe its a 06-07. It will not rev above 5000 rpm even at full throttle. Almost like its in some kind of limp mode. Every once and a while it will get half second blips of power and then at one point during the day i had full power for about 2 minutes. I added new fuel to it part way through the day and it helped a bit. I wanted to get your opinions before i started taking things apart. I think its either the fuel filter, fuel line or spark plugs. The battery is fully charged. Probably was bad fuel then plugged the fuel filter??

Thanks

[Bruce!]

Welcome to the board!

[T Hunter]

I worked on an 06 500 that had a similar problem. It would run good for a few minutes and then start bogging down under half to full throttle and for a few seconds would run good. After doing a tune up and changing the fuel filter and getting nowhere, i noticed if i turned it off for as little as 30 seconds it would run good again for a few minutes and then i decided it was the fuel pump getting hot and not making enough pressure. I swapped the pump out and it hasn't missed a lick since. Not sure this is the same problem you have but definately worth checking into.

[T Hunter]

Also might want to check the battery connections which if loose can make computer controlled engines do funny things and the sensor between the throttle body and the intake is a problem on some models from the wire loom rubbing through the wires.