Hello, I've been working on a 2001 that been sitting for many years. I recently removed the oil sender, installed a T with a oil pressure tester and a barb fitting and pumped in oil, but when the gauge didn't move, I thought nothing happened and was prepared to remove the filter, and pump oil though the off center hole in the oil filter adapter (this is what a leading manufacturer says to do) but when I just cracked it loose, oil start dripping out, I then spun it back on tight. This would tell me that the oil filter is filled and the engine is primed. Right? I then removed the barb fitting, when I did this some oil came out and then I put the sender back on the T. But on cranking it, the needle on the gauge still didn't move. In thinking that the oil that came out was to much (?), I added an 90 degree elbow with a valve with the barb fitting. When I pumped in the same amount of oil I turned the valve off. I did this each time without overfilling. Still the needle doesn't move. Is this engine primed? Will the engine have to start and run for the gauge to move? Could it be the gauge? Thanks in advance.