... check as follows: 1) Water pump (such as QB series, CPM series, JET series, HFM series, QGD,4SKM, Submersible pump QJ series etc.), 2) Gasoline engine ... water pumps (all type, such as YC series , ... Diesel engine water pumps (all type,such as YC series SHP20,TT40/50/60,DWP20/30E/40,DHP15E/20/30 ...