Name that knock- Solved

well , take a wooden broom handle . place one end on the motor as its running and the other end of the handle tight up against your ear . that will transfer the noise straight up to you . now move the motor end of the handle around on the motor , keeping in contact with the motor to find the place were it is loudest . move the motor end all around the block and head . it will help you locate were and what could be hammering . hope its something simple .