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Hi All

New to this forum and new with yams

Having a collection of dukes I have entered the dark side and re building a R1 1999 5JJ. The bike has really been neglected and I am totally rebuilding it from a complete strip down. When I bought it all run ok and no overheating etc but when the oil was dropped it was black but not milky.

I have just re fitted all the coolant assembly, rad etc and filled the system but 2 days later when to fill the oil ready for its first start in about 5 months I have found the best part of 2 ltrs of coolant in the sump. The most obvious thing that comes to mind is the water pump seal has failed but need a second opinion.

appreciate any response

thanks

Oliver12

Welcome to the forum. I'd suggest you start a separate thread about the fault in the workshop section.

You might like to look at this recent thread: viewtopic.php?t=19849
And this: viewtopic.php?t=19868

Welcome in Oliver
I would say if its definitely coolant then yes the water pump may be the place to start