KR-1S.co.uk Forum

Hi All,
right, the crank seals have gone on the KR-1 so I swapped the engine over with a kr-1s unit I had lying around, now it appears that I have water contamination in the gearbox oil (milky sight window) I am going for an oil change tonight in the hope that it is just water that somehow managed to creep in whilst the motor was in storage / being cleaned if its not that where could the water be coming from?
Cheers
Al

I had a similar problem, however, the cause was a blown head gasket, causing the cooling system to over pressurise and blow past the impellar seal. Does the coolant smell of exhaust gasses?

Not really but its been sitting for a while now, will have a sniff after I have ridden it home!
Cheers
AL

most probably is the waterpump seal.

if the headgasket is blown, airbubles should appear in your radiator.