I have a Whirlpoo Side by Side w/ a loud motor

Normally a loud sound coming from a compressor is due to a blockage in the gas line, When you have a small leak, the sound is very quiet as there is no gas to compress. You Need to get a technician to confirm and then rectify problem. Tools and components are to specific for the house holder to attempt. If per chance you do have R134 gas and a 20mm drier plus line tap valve. (Includes a vacuum pump plus gauges) please let me know. I will then go through the complete procedure with you.