If you bought it used, you should disassemble the pump to clean it. Make sure that the impeller is not stuck to the ceramic shaft. If it is, take out the shaft carefully and soak both in vinegar. Also check the venturi to make sure the air intake hole is not blocked with salt creeps.
Yea It Was The Venturi. I Lifted It A Little From The Holder And It Began To Make Bubbles. Thanks Regal! How About The Gate Valve Do You Think It Is A Good Addition?