Agriculture and Farm Equipment
Agriculture and Farm Equipment Repair Questions? Ask a Mechanic.
More than likely you have damaged the pump. When the pump runs dry, it will quickly score the tight clearance areas due to cavitation, heat, and lack of lubrication. You could remove the pressure hose from the pump and place it in a bucket with one end still connected to pump output. Turn the engine over for a few seconds and then observe the contecnts in bucket. Most likely the bucket will be dry indicating the pump needs to come out. I have had some air bound though that doing this allowed them to purge themselves so its a last resort. Alternativley you can just run the pressure check point connection using a hose in a bucket to purge air that way too.