I replaced my sea water pump impeller and one of the blades was missing. Where could it have gone?
It is not uncommon for the bits and pieces of damaged impeller to become lodged in the end of the heat exchanger or possibly in the fittings between the sea water pump and the exchanger. Periodic cleaning of the heat exchanger by means of removing the end caps should be done to remove debris. The exchanger is designed with removable end caps specifically for purpose of cleaning it out. It’s very important to make sure all of the debris is cleaned-out in order to prevent possible engine overheating.