Question about Yamaha YZF-R6 Motorcycles

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I've got a 08 r6 thats done 3,700 km with a small coolant leak behind the what I think is the water pump housing. Is it a common problem and any ideas on how to fix it? And cost?

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Most Yamaha water pumps have a weep hole that drains off any leakage that migrates into the space between the oil seal on the shaft bearing, and the coolant seal at the impellor.
This prevents the fluids contaminating each other.
Sometimes a seal will leak after sitting dormant (winter storage) for months...and they will seal again after a few rides.
Don't be tempted to plug off the weep hole or crankcase contamination can occur.
Not real familiar with your model...but the bigger touring bike (Venture) the seal can be replaced along with case gaskets for around $60 in parts.

Posted on Apr 02, 2011

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Posted on Jan 02, 2017

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2001 Honda CR 125 motorcycle is leaking coolant from a small hole right behind the water pump. What is the purpose of this small hole? Why is my coolant leaking from there?


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