Mariner will not pee

[rcmickey]

Gent's I need your help!!! I have 100HP 1991 4 cylinder Mariner that does not pee. I have pulled out the thermostat and replaced the impeller and still no pee. I even pulled out the pop-it valve and ran it with out it. Still no pee. The motor runs cool on the muffs and idles all day without getting hot, but no pee ever comes out. I did get it to pee out the little hole in the pop-it valve, thermostat cover when they were not in, but the cover was on. So what gives????