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Weird smoke/ steam

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So I just replace some parts on my 2005 YZ 450 I took off the pipe the water pump and the crank case. I have it all back together now but when my bike starts after about 10 to 15 seconds this white smoke or steam starts showing up at the bottom of the rad. It looks like it is almost coming directly through the exhaust port where the pipe connects to the engine. Anyway if anyone has any advice let me know.oh and also sometimes when I try to start it the kick starter will slip and the pipe will pop. And another thing, every morning there is a little bit of oil on the ground. Don't know if it's related.

Edited by yz45life

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