I just attempted to start the series 5 I have been working on. The car started but showed no oil pressure. Car ran ok for a short time with no nasty noises. I shut it off and started to investigate. Gauge is hooked up. Removed the fline and fitting at the block. Cranked the engine and got no oil out of the port. The po that I bought the car from installed the engine. He pulled it from another car and was purportedly rebuilt, never run and sat for several years. He did give me a receipt from an engine rebuild company that showed the work done on an engine 10 years ago. The engine does look clean and fresh. I don't have any reason to disbelieve the rebuild, however, due to other things I have found on the car, I really don't trust any of the work he has done. So, the question is now how should I proceed to verify adequate oil pressure and circulation? Any suggestions appreciated.