Why is there no detergent coming out? Cause Solution Detergent container is empty. Add more detergent. Detergent bottle or suction tube not properly connected. Check connections. Detergent is too thick. Dilute detergent. Clogged detergent tube. Remove obstruction or run distilled white vinegar through detergent tank. Discharge nozzle is obstructed. Blow out or remove debris with the needle clean out tool. Using a 3rd-party nozzle. Use black soap nozzle found in our Sun Joe Electric Pressure Washer Quick-Connect Spray Tip Set (SPX3000-TPS). Related articles Why is there no detergent coming out of my SPX-FC34? Why is my SPX-FC34-MAX not dispensing detergent? Can I use any detergent with my SPX160E-MAX pressure washer? Can I Use Disinfectant with this Chemical Sprayer? Sun Joe High-Pressure Washer Hose Compatibility Guide