Where to begin. I have a Hayward 1.5Hp sand filter that's 4yrs old. I replaced the strainer cover o-ring this Spring. The new o-ring is a smaller diameter. When the pump is off, it leaks water. When it's running, it sucks air in. I can't get any pressure to run my vacuums. So I finally get the pool clean with my on-again, off-again Pool Blaster. Less than a week later, my pool is dirtier than ever. It's a light brown from all the dirt. I was just in it 2 days ago and it was clear. I check it every night and it's all good. I have filter sand in the pool also. I'm ready to tear it down. The pump doesn't work, the filter doesn't work, the pool cleaners don't work. I'm almost done.

Sorry. Had to vent. I don't know what else to do beside buy a whole new pump/filter set and 'hope' that works.

Kevin