January 28, 20188 yr I have a montesa 315r 2t just rebuilt it new head gasket I have noticed that I get some coolant out the overflow when underload going up hill. (yes the head gasket is on the correct way the rad cap seems good takes a fair bit force to compress the spring) Any ideas appreciated
January 29, 20188 yr the rad must be left low on fluid to allow for coolant expansion when hot under load.
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