ran great yesterday

[joe man]

I have a 2008 750 efi it is bone stock with 108 hours and 1200 miles. It ran great yesterday and I have never had any problems with I live in Michigan and it is snowy and about 32 degrees around here. today I take it out and poof it start and idles fine its also snappy if you rap the throttle buttttttt if you hold it wide open it just don't get there it pops and sputters about mid rpm same when you ride it any suggestions

[NMKAWIERIDER]

Originally Posted by joe man

I have a 2008 750 efi it is bone stock with 108 hours and 1200 miles. It ran great yesterday and I have never had any problems with I live in Michigan and it is snowy and about 32 degrees around here. today I take it out and poof it start and idles fine its also snappy if you rap the throttle buttttttt if you hold it wide open it just don't get there it pops and sputters about mid rpm same when you ride it any suggestions

Some folks have reported that in the freezing temps, moisture in the tank or fuel system freezes and cuts part or all the fuel supply off making it run kinda like you way. If you can put it in a heated area for a few hours and add some fuel de-ice, shake it up and run it a while in that heated area, it should fix that if that was the problem. Others are saying the boots between the injector bodies and the heads have cracked in the extream cold letting straight air in. Spray some starting fluid or carb cleaner on them while running to see if the RPMs increase. If so, there is a crack or split.

Also, check to make sure snow from the previous day's ride has not packed up against the front of the air box.

[Thom]

Hmmmmm.... I run in some pretty cold weather and get it covered in snow and ice. never had that issue at all. Not saying itcannot happen but never had that experience and I ride with a few other Brute owners with no issue as well. Keep us posted

[gusmx5]

Mine does the same but my fuel pump is bad and needs changing.....

[joe man]

so i drainen the gas put new gas in with de-icer in it.in a warm garage for a couple of days runs the same way. it will rev. up high if ya spray starting fluid in down the intake with it held wide open. took the fule line off and i can piss harder then the fule comes out meaning that its not coming out wery hardwhen you turn the igintion on. any test or idea about howmuch/p.s.i. fule should be coming out?

[NMKAWIERIDER]

Originally Posted by joe man

so i drainen the gas put new gas in with de-icer in it.in a warm garage for a couple of days runs the same way. it will rev. up high if ya spray starting fluid in down the intake with it held wide open. took the fule line off and i can piss harder then the fule comes out meaning that its not coming out wery hardwhen you turn the igintion on. any test or idea about howmuch/p.s.i. fule should be coming out?

I don't have the specs here. Probably in the manual. I do know it won't run up with the air box lid off. It has to be on. Ok, back to the fuel. Once when I had mine off I turned it over with the line off and it came out pretty good...not like a car, but shot about an inch & a half solid. An EFI pump should be even better...stronger I would think. There are only a few things that can cause it to be less. The fuel pump or junk collecting around the intake screen in the tank. Gus found on his 08 that he could blow air back and knock some of that off his runs good for a while...but at some point he has to get the tank cleaned out because it just will keep doing it.