This is the first time opening the pool. I moved into a home and the owner had this above ground pool for ten years. It is a 24 ft pool. It has a sand filter. The first problem i had was the motor. It was shot. I then got another motor and everything was working fine, but now it is randomly turning off. When i turn it back on, dirty water will shoot out of the jet inside the pool for about 30 seconds or so and then clear up. I am a beginner and have no idea what I am doing.