Normally if it does not sound right, it is not right. By your discription it sounds like your compressor is having a problem with flood back caused by a txv not metering properly, or an overcharged system. You will need a tech who can determine superheat and subcool for your refrigerant system. Find a tech who can determine these values. Superheat and subcool is normally around 8 -12 degrees. Superheat is the amount of additional heat the refrigerant picks up in the evaporator once it is turned to gas and is needed to keep liquid refrigerant from flooding back to the compressor. Compressor are designed to compress gas not liquid. Subcool is the additional cooling refrigerant undergoes once the refrigerant turns back into into liquid in the conderser. Subcool ensures the refrigerant remains in liquid form until it reaches the metering device. Only liquid suppied metering devices will pass the required amount of refrigerant to achieve the rated cooing or heating rates. If it is liquid flood back, your compressor will be damaged and will need to be replaced. Hope this helps