... 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 ...