Vintage Oldsmobiles Curved Dash, Limited Touring, Models 40, 53, 66; Series 60, 70, 90

1957 Oldsmobile fuel pump woes

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Old Jul 16, 2025 | 05:20 PM
  #41  
GLDN88's Avatar
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From: Dexter, MI
Originally Posted by GLDN88
With my earlier post I forgot to mention that I 'test assembled' the vacuum side of my pump and bench tested it and it has in and out pressures as expected (confirmed by Mike). I'm supposed to get the replacement diaphragm on Monday - more follow. Thanks, David
I am happy to report that I installed the new diaphragm, bench tested it, reinstalled the pump and its doing everything should. Engine vacuum is 17 mm hg and wiper vacuum is 22 mm hg. Time to focus on other things and get ready for a couple of events. Thanks, David
Old Jul 16, 2025 | 06:37 PM
  #42  
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I’ve enjoyed following this thread from the sidelines, but have a question. David, you’re reading 17 mm Hg or 17 inches Hg?

Last edited by Vintage Chief; Jul 16, 2025 at 06:54 PM.
Old Jul 16, 2025 | 07:29 PM
  #43  
GLDN88's Avatar
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From: Dexter, MI
Originally Posted by Vintage Chief
I’ve enjoyed following this thread from the sidelines, but have a question. David, you’re reading 17 mm Hg or 17 inches Hg?
Norm, sorry it was inches of mercury. I was thinking blood pressure. Thanks for catching that, David
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