300/440/550 650sx problem

[Dwagner1006]

So my 650 recently started acting up. It will just shut off if I hit a hard wave, or roll it over at all. Now its giving me problems starting and seems to be ideling very rough.

The motor is bone stock. Pulled the carb and fuel pump. Both appear to be clean. Perfect 145 compression on both jugs.

Maybe I'll part it out and get a new superjet, lol

Any other ideas?

 

[Justanotherusername]

tuning? other than that i would just say part it out, because after about 15 hours of riding I hit the ceiling of limitations on mine. Superjet, here i come!

 

[Dwagner1006]

Yea, I think I have to agree. Im going to tear it down and see if I can find the problem. If not. Sell it all and buy a SJ over the winter

 

[jetski9010]

sounds like it might be bad needle and seat in the carb. Might just want to rebuild the whole carb while your at it.

 

[u887266]

If you dont find anything in the carb. look inside your e-box. My 650 was doing the same thing and I found water in my e-box. It had rusted up some of the electrical parts and it was acting up when I jumped and turned. Got the water out and replaced what was bad and not it runs great.