Andyb1987 Posted January 28, 2018 Report Share Posted January 28, 2018 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 Quote Link to comment Share on other sites More sharing options...
copemech Posted January 29, 2018 Report Share Posted January 29, 2018 the rad must be left low on fluid to allow for coolant expansion when hot under load. 1 Quote Link to comment Share on other sites More sharing options...
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