Pressure problem
ps- in forum search doesnt work
Did you replace the oil sender? Maybe pull it and see if it's blocked. he guage could have gone south aswell.
Just be careful. Dont run it for any length of time if it might not have pressure. Those mains love to spin quick style without oil.
Also, oil pressure wont show on the guage when you crank it. After you start it, pressure should build within two seconds. If not, then there is a problem.

