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I bought an 07 yfz 450 Bill Balance edition last november. It runs great, and has some mods that i cant quite figure out. I am pretty sure it has a big bore kit and a stage two cam on it. The problem is that the coolant leaks out of a tube that comes from the bottom of the right side of the ?crank case? (motor). It wasnt bad at all when I got it, but now that I have ridden it more, it starts to leak immediately upon starting. Even when its cold, and will continue to leak bad enough to empty the reservior under the seat in a matter of minutes. Any help would be great!:aargh:

Posted

Are you sure it's not an impeller seal that has gone bad causing a leak in that area? Seems common on those. Check out this video:

[ame=http://www.youtube.com/watch?v=f6M8Wc6uQZ8]yfz 450 coolant leak fix. Impeller seal replacement Part 1 of 2 - YouTube[/ame]

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