I've got a 3500PSI pressure washer with a Honda motor and Cat pump. It's about 4 years old. I didn't use it last year and had a problem when I tried to use it today. I attached the garden hose, pressure hose and wand and turned on the water. I was waiting for water to exit the wand before starting the motor but no water exited the pump's outlet. I removed the pressure washer hose but nothing was coming from the pump. I cleaned the water hose inlet screen which was not clogged up but nothing happened....not even any noise suggesting the water was circulating within the body of the pump. Naturally, I didn't start the motor. Any ideas or suggestions?