Hi, this is the pump I have: https://www.google.com/search?um=1&hl=en&safe=off&biw=1024&bih=653&tbm=is ch&oq=utilitech+utp15p1+&gs_l=img.3... 3046.3046.0.3474.1.1.0.0.0.0.85.85.1.1.0... 0.0... 1c.1.6.img._K_JVExW12c&q=utilitech%20utp15p1#imgrc =WIKZxMc_SwFMeM%3A%3BuWNZdda0-q3NDM%3Bhttp%253A%252F%252Fimages.lowes.com%252Fpr oduct%252Fconverted%252F054757%252F054757083410.jp g%3Bhttp%253A%252F%252Fwww.lowes.com%252Fpd_313833-57366-UTP15P1_4294820778_429493%3B900%3B900 It is actuall 1 1/2 HP not 1. I believe the priming plug is where the pressure gauge is and I've tried to put water into it multiple times but when I put it back on, I can see the water level in the clear filter tube drop then starts "slurping upward" but can't start a flow of water. What should I do?