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TECHNICAL MOTOBRICK WRENCHING In Remembrance of Inge K. => The Motobrick Workshop => Topic started by: MichaelMandel on September 24, 2015, 03:30:33 AM
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OK.... So I came upon a 1985 k100RS that my buddy up and gave to me. I've stripped the plastics off and noticed the fan never kicked on. I took out the old thermostat and before putting the new one in I decided to leave some good old fashioned water in to flush it out before popping in the new thermostat and proper coolant. After letting it sit in the heat for a bit after riding it hard on a 100 degree day the fan finally kicked on. After riding it like this for a week or two I am about to pop the new thermostat and coolant in when I noticed a leak trail up my driveway. It's water(in place of coolant)... and it's coming from a weep hole I discovered on the bottom side of the pump housing. It's clean water from the cooling system and there's zero oil in it and the oil is a perfect golden color and free of contamination from the cooling system so the seals are good. What's up??? will popping the thermostat in correct a flow issue and get rid of the purging from the weep hole? is straight cooling system coming from the weep hole a super bad sign if not contaminated? what's up???