I just opened up the water pump on my '86 cr250 and found it to be pretty dry. Found out why as soon as I threw some light on it. Yep, all but a TINY hole in both hose nipples (?) are completely gunked up in some nice light green/white crap.Does anybody know what this is? Okay obviously it's coolant, but why is it so dry? What causes it? My bike never quot;overheatedquot;, but there's very little travel room for the liquid. What should I do now? Clean it out and run new water through it?
Appears your cooling system has not been flushed for years thus the build-up of slime, (seems maybe even 'dry-slime'). The cooling system should be flushed clean, a new water pump and gaskets installed.
