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Author Topic: 69 AC Fuel Pump rebuilder?  (Read 1726 times)
69z28302
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« on: January 02, 2012, 08:52:08 AM »

Does anyone know of anyone who rebuilds these? I bought one put it it on and now it leaks oil.


Thanks CRG

MM
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JohnZ
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« Reply #1 on: January 03, 2012, 11:49:26 AM »

Does anyone know of anyone who rebuilds these? I bought one put it it on and now it leaks oil.


Thanks CRG

MM

The crimped-bottom pumps weren't designed to be rebuilt; ethical rebuilders won't touch them.
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'69 Z/28
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69z28302
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« Reply #2 on: January 03, 2012, 05:04:58 PM »

Thats what I thought to John. I bought an NOS one and its leaking with less than 50 miles on it.

MM
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69Z28-RS
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« Reply #3 on: February 14, 2012, 01:34:27 PM »

I'm curious what kind of oil would be leaking from a fuel pump?  If they have 'sealed oil' inside of them, it couldn't be very much.. I'd have thought any internal lubrication would be a heavier grease, not oil?  typically if there's oil leaking, it would be from the engine oiling system, running down the fuel pump push rod, and leaking from the gaskets on the cover plate or the gasket for pump installation.   Engine oil can also leak from one of the front bolt holes that go into push rod the passage way; that hole needs a short bolt installed with sealer on the threads.   In short, maybe you don't have a leaking fuel pump...  Smiley  but instead a simple problem that you can address yourself...
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Gary W.  /  69Z28-RS, 72 B 720 cowl console rosewood all tint
69 Corvette convertible, silver/black 350 hp,
60 Corvette white/red, 72 Corvette coupe (2), 
90 ZR1 red/red #246, 90 ZR1 white/gray #2466
72 El Camino, '55 Nomad, '57 Nomad, '57 B/A Sedan
69z28302
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« Reply #4 on: February 14, 2012, 07:49:53 PM »

It had a leaking gasket.

 I was thing it was oil that leaked when they went bad but it FUEL that leaks from the seep hole.

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69Z28-RS
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« Reply #5 on: February 15, 2012, 11:22:26 PM »

Thanks....   I was curious becuase there was not a resolution posted...   Smiley
So your rebuilt  AC fuel pump is still working OK?

gary / 69Z28-RS
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Gary W.  /  69Z28-RS, 72 B 720 cowl console rosewood all tint
69 Corvette convertible, silver/black 350 hp,
60 Corvette white/red, 72 Corvette coupe (2), 
90 ZR1 red/red #246, 90 ZR1 white/gray #2466
72 El Camino, '55 Nomad, '57 Nomad, '57 B/A Sedan
69z28302
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« Reply #6 on: February 16, 2012, 06:49:16 AM »

Hi Gary . The pump I have iis a NOS pump . Not rebuilt. It seems fine right now .

Mike
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69Z28-RS
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« Reply #7 on: February 16, 2012, 06:46:42 PM »

Oops...  sorry...   Smiley   an NOS pump is supposed to work isn't it?  Smiley
(I read 'rebuilt' somewhere in that string and got confused...)  Smiley
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Gary W.  /  69Z28-RS, 72 B 720 cowl console rosewood all tint
69 Corvette convertible, silver/black 350 hp,
60 Corvette white/red, 72 Corvette coupe (2), 
90 ZR1 red/red #246, 90 ZR1 white/gray #2466
72 El Camino, '55 Nomad, '57 Nomad, '57 B/A Sedan
flyingfred
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« Reply #8 on: May 26, 2014, 11:16:15 PM »

Does anyone know of anyone who rebuilds these? I bought one put it it on and now it leaks oil.


Thanks CRG

MM

Oil leaking from the fuel pump is caused by the internal seal at the diaphragm spring. When they get old and hard, oil from the oil pan can leak by the seal and it will come out of the breather hole in the fuel pump body. If your diaphragm leaks you will end up with a lot of fuel in your oil pan if it does not leak out of the breather hole first. I have received many pumps for restoration where the breather hole is plugged with anything available at the time the leak was discovered. I have seen sticks, paper compressed into the hole and even small bolts. Of course I do remove this debris in the restoration process. I can only wonder what the person was thinking at the time they discovered the issue.

-Fred-
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