When opening my pool I realized that the skimmer to my pool was not sucking - we are talking 0 suction, nada. I assumed I had a clogged line. I confirmed this by closing off the valve to the main drain so it was not pulling water, and sure enough there was no water being pulled into the pump through the skimmer line. I went and purchased a drain bladder and inserted it into the skimmer line through the pump to try to flush the clogged material out. At this point water was observed bubbling up into the skimmer and I could feel the water flow out when I put my hand in the skimmer hole. However, there was no observable debris that was pushed out. When I restarted the pump I did get suction from the skimmer. The pump primes fine when the valve is set to main drain only, or main drain and skimmer, but when I set it to skimmer only there is now some water flow into the pump (before I used the drain bladder there was none) but the pump won't hold its prime.
I need help. Is there still a partial blockage (remember no debris was observed washing back up) or is it more likely that my pipes froze and cracked over the winter when we had some cold weather???
Edit: My pool is not losing any water when I operate the pump