Worlds most accurate oil pressure gauge? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**HO455** · 08-28-2022, 09:26 AM

Did this phenomenon start happening out of the blue?

It could be caused by the oil pump pumping air. Is the oil level correct? Does the oil look like it's full of small air bubbles. As Steeveedee said you could have an internal leak that is aerating the oil.

You might pull the distributor to inspect the drive gear and the oil pump drive for wear.

It may not be the problem but, changing the oil filter is easy and it's not impossible that it could be the issue.

I don't believe that the small brass gears in the guage will last very long with that much movement.

Good luck and keep us posted.

08-28-2022, 09:26 AM	#8
HO455 Post Whore Join Date: Feb 2016 Location: Portland Oregon Posts: 11,220	Re: Worlds most accurate oil pressure gauge? Did this phenomenon start happening out of the blue? It could be caused by the oil pump pumping air. Is the oil level correct? Does the oil look like it's full of small air bubbles. As Steeveedee said you could have an internal leak that is aerating the oil. You might pull the distributor to inspect the drive gear and the oil pump drive for wear. It may not be the problem but, changing the oil filter is easy and it's not impossible that it could be the issue. I don't believe that the small brass gears in the guage will last very long with that much movement. Good luck and keep us posted. __________________ Thanks to Bob and Jeanie and everyone else at Superior Performance for all their great help. RIP Bob Parks. 1967 Burban (the WMB),1988 S10 Blazer (the Stink10 II),1969 GTO (the Goat), 1970 Javelin, 1952 F2 Ford OHC six 4X4, 29 Model A, 72 Firebird (the DBP Bird). 85 Alfa Romeo If it breaks I didn't want it in the first place The WMB repair thread http://67-72chevytrucks.com/vboard/s...d.php?t=698377



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