Hi, I am trying to diagnose a fluctuating oil pressure problem:
1) Does anyone know of an easy way to connect an oil pressure tester? I have this fancy oil pressure gauge made by K-D Tools, but you need to screw the end with the adaptors into the crankcase, in place of the sending unit. But there is a 6' long neoprene hose with dial gauge attached to the adaptors, so it's going to be kind of awkward screwing in the adapter while all that stuff is still attached, especially in the tight confines I will be working in (back of engine from underneath, under the intake manifold, above drive axle), all without managing to slam the gauge into something while it is turning clockwise with the hose.2) I can't find a torque listed anywhere for the oil pressure sending unit, even in the official GM shop manual.
3) The correct pressure for my car is supposed to be 56 PSI at 150 degrees F (3000 RPM). How do I know when my engine has hit 3,000 RPM if I don't have a tachometer in my dash? I do have a separate testing tachometer, but do I really need to hook that up too just to test oil pressure?4) If I leave the gauge on for too long while my engine is running, is oil going to creep up the inside of the hose and contaminate the dial gauge?
5) IF the oil pressure checks out, then the problem must be either with the in-dash gauge or the sending unit. Can I rule out the in-dash gauge by simply connecting the prongs of its electrical connector, and see if the gauge goes to full?Thanks for any help!
Julie