Need some help

[RNL]

Hey everyone, last month I bought a 2012 YFZ450. I have rode it a few times, but today I got it out, and after I let it warm up for 5 minutes it bogs and sputters when I hit the gas. Also I'm noticing a slight pop when I let off the gas, and turn it off. Any ideas whats up? Its about 42 degress out if tht has anything to do with it.

[RNL]

I forgot to mention I'm all stock. I did some searching and still havnt got a straight answer. some say to rich, some say it's lean. I'm reall confused because it's all stock and the jetting shouldnt be bad right from the facotry should it?

[Nutz]

Did you put the petcock on reserve.

[RNL]

Originally Posted by Nutz

Did you put the petcock on reserve.

What would that do?

[alpinestars13523]

If youre low on gas try putting it on reserve....I'm assuming you have the new yfz thats carbureted again so if its stock I would say that it is running too lean especially if you are riding in colder weather

[RNL]

Originally Posted by alpinestars13523

If youre low on gas try putting it on reserve....I'm assuming you have the new yfz thats carbureted again so if its stock I would say that it is running too lean especially if you are riding in colder weather

Yeah I got the carbed version, and it is the 30's temp wise. Why the hell would it be so lean from the factory???