The Stovebolt Site Forums The Shop Area Engine Shop replaced the vacuum advance but...

Hey old_blue-

This is a coincidence. The vacuum advance and oil pressure guage don't have anything to do with each other.

As far as the gauge goes, there isn't much of any way you could get it to register by blowing in it. It takes quite a bit more than that. But, I would agree that it is probably the gauge unit. I'm assuming it's the original mechanical unit. If it is, there is no sensor, just a piece of capilary tubing that connects the gauge with the main oil galley. Nothing more than a leak can happen to that end of things.