eddygeroge12

Thanks for the speedy reply. Yes there is a tank in which the coolant flows over the exhaust and raw water outlet... I don't have a skin tank linked to the coolant system (which I assume works as a radiator??)

Hi all, any help and advice would be so much appreciated. I've been running my BMC 1.5 narrow-boat engine for six months now and I've serviced and replaced quite a few parts...Glow plugs/lift pump/water pump/ thermostat 82 degree Celsius ect. It has been starting and running well for the most part but the calorifier the cooling system it is linked to has never produced any hot water. During my last cruse the engine stated to overheat running over 100 degrees which has not been a problem in cooler weather before now. My first thought was there must be a blocked pipe in the calorifier loop system but having just taken it all apart it all seems to be free flowing. First off can someone tell me what temperature the engine should run at during say a steady 1500 rpm? Is the calorifier essentially the engines radiator? Is the engine water pump (brand new) powerful enough to circulate the coolant through the whole system...or do I need an additional pump for the calorifier? Is the thermostat supposed to kick in at 82 degrees and then allow circulation of the coolant? Any advice or answers to these questions would be really great Thank you Eddy