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After replacing the ancient cooling hose, topping up the coolant on my fresh-water cooled MD2040 and heading out for a sail last weekend I discovered a not-insignificant amount of coolant in the bilge. I instinctively blamed a loose hose-clamp, but on closer inspection it seems the coolant sprayed out of the side of the heat exchanger 'radiator cap' at the top of the engine through the fitting where an overflow tank would be if one were fitted.
With apologies for being somewhat mechanically inept, the coolant level is(was) correct and far below the cap and it's my understanding the engine will run quite happily without the radiator cap even on (it's not like the system is pressurised) - so how is it even possible for the coolant level to get high enough to come out of the cap? The clamps are tight - am I getting air in somewhere??
Thanks,
Cameron
With apologies for being somewhat mechanically inept, the coolant level is(was) correct and far below the cap and it's my understanding the engine will run quite happily without the radiator cap even on (it's not like the system is pressurised) - so how is it even possible for the coolant level to get high enough to come out of the cap? The clamps are tight - am I getting air in somewhere??
Thanks,
Cameron