I Might Just Know What I'm Talking About
Join Date: Mar 2000
Location: New Jersey
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Re: Mechanical oil pressure gauge
As was said, just screw it on the back of the gauge and start her up. You will always have air in there. Say you purge all the air and start her up. Everything is fine and dandy and you have a big satisfied grin on. Now shut her down overnight and come to find out that the oil that was nice and airless in the line has since drained back down. Start it up again and you now have air..... Sorry for the sarcasm, just one of those days.