My Oil pressure gauge isnt working. When i turn the key all the way w/o starting, the needle moves to about halfway on the gauge. But when i start the car the needle drops down and doesnt read. I read through the oil pressure threads on here and cant figure out whether the issue is the gauge...

So i attempted to rebuild my fwd 96 but it is leaking out of the oil sensor and i am not sure why or how to repair it. I had the crank polished and new main bearings oversized. I should be able to run with more pressure i guess is the problem. It seems to be flowing oil through properly. Is...