Trying to obtain oil pressure in my 8n and I am looking for advice. I have inserted oil in both plug on the front near the distributed as well as the oil pressure gauge tube. Filter us full. I have installed new pump and gears to include the entire pump housing. Got no pressure. I have removed the plug at the front and started the engine. Oil squirts everywhere out of the hole. Where is the problem. I have run this engine with gage off to bleed air in the line but no luck. This engine has been completely rebuilt. What did I miss.