I saw a slight pressure reading on mine when cranking w/out plugs. It's hard to see, it doesn't build up much pressure, but it definitely did it. One time I put the pump back on without the spring and it wouldn't hold pressure, but if you rebuilt yours you would probably not be as inempt mechanic as I.

For Sale or Trade
33" AT Winston Wheelers. Nearly New.
all stock except for 4.88s...