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I have a 07 M1000 with a big bore 1200 kit. My sled began to drink about a half a gallon of coolant every time i ride. The coolant ends up in the crank and cylinders, it also blows out of my intake. I have replaced both the base gasket and o-rings. I rode the last five times with this problem and parked it. With winter just around the corner i was hoping to get some input before i go back to tearing it apart. I think that my crank could possibly be going out and i have heard that it would do this. Any suggestions would be greatly appreciated.