kfx700 trouble help

I recently brought an 04 kfx 700, and she will not stay crunk nor idle. I took the air filter off and one carb has black stuff all over it and the other one is clean as a whistle. I feel like it’s a clogged jet or worse maybe the cylinder.

I just got this bike from a kid that thought the fuel pump was bad. It wasn't the fuel pump. Got the bike working...except it has a REALLY LOUD clanking noise coming from the front cylinder/ head area. I called a mechanic from this area and he gave me BAD news. He thinks its the rod and that the...

i dont really know whats wrong with it i just got it and it ran great for the first day i got it off of this guy i traded my banshee for it to and then when i got it home i turned it on in neutral and when i went to put it in drive it started grinding threw the gears and it does the same when i...