So I got a 98 wr400, the bike rode well, but did need a carb clean. It would bog in full throtle and not idle with the choke off. I was riding one day around the neighborhood when I pulled the clutch and didn't give it enough throtle, to rev it so it didn't stall, but it stalled. I pushed the bike home and it hasn't started since. I pulled the carb apart and cleaned the jets and screwed them in, I probably need to adjust them. I pull the throtle spring on the carb andeverything works like its suppose to. HERE IS MY PROBLEM: the bike won't start. I have squirted some gas into the motor without the carb on and it has a spark. I kbow this because I almoat caught my shorts on fire lol. I will post a video of it soon, so yall can hear the bike. It has compression. I am at a lost right now. In the pic, there is a black tube near the front of the motor that goes to where the cam is. That tube puts out some air when I kick it, is that suppose to happen?? Also can anyone fully explain what this switch does on my handle bars? I got this bike a month ago.