Not sure by hearing the compression, but you get closer to one revolution, it gets a tiny bit harder to turn. Then past one revolution the pressure eases up and get slightly easier to turn. But should be easier to spin. If you are using a lot of force to turn the motor, something could be binding
The water pump is a 4ac water pump I encounter this issue before ( auto store gave me wrong model)
I have a question after a rebuild when you are doing the revolutions are you supposed to hear compression?
Not sure by hearing the compression, but you get closer to one revolution, it gets a tiny bit harder to turn. Then past one revolution the pressure eases up and get slightly easier to turn. But should be easier to spin. If you are using a lot of force to turn the motor, something could be binding