dickie...

Posted: Tue Aug 26, 2008 8:01pm
Post Subject: over heatingmy mother and father have just bought a cruiser with a 1.5 bmc engine which keeps over heating,its had a new water pump and thermostat but still overheats.what i thought was a heat exchanger just seems to be a exspansion tank bolted on to the manifold,the raw water pump works fine but this only goes to the exit of the exhaust via a small copper pipe,i can't work out how the engine maintains it's running temp with nothing to cool the engine water,i'm very very new to all this a would really appreciate some help as i'm starting to pull my hair out!