I have an inground pool, 18 x 36, roughly 9 ft deep at the deep end. the numbskulls that put it in put the pump 6 feet higher than the pool itself with only a 3/4 hp pump. so I decided to buy a 1.5 hp motor and I put it in and everything is correct on it I've been through it a hundred times, fired up the first time just fine and pulled a prime perfect but I noticed a leak at my chlorinator so I shut it down, and then restarted it and now it won't pull a prime, I have been tinkering with the thing for days and I need suggestions, thank you in advance for any help you extented to me