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  #11  
Old 06-23-2016, 04:19 AM
Lynn Lynn is offline
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Default Re: Carburetors and fuel pressure: Please read

Agree 100%. Easy fix for non original cars. Don't know what I will do if the one on my 69 Z goes south.
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  #12  
Old 06-23-2016, 10:27 AM
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Default Re: Carburetors and fuel pressure: Please read

Somebody must test fuel pumps?

One would think the manufacturer would test on a regular basis?

Ryan
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Old 06-23-2016, 06:49 PM
earntaz earntaz is offline
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Default Re: Carburetors and fuel pressure: Please read

Again -- QA/QC asleep at the wheel ... TAZ [img]<<GRAEMLIN_URL>>/headbang.gif[/img]
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Old 06-23-2016, 07:22 PM
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Default Re: Carburetors and fuel pressure: Please read

If one had access to the appropriate tooling to un-crimp/crimp the steel housings to the cast bodies, it wouldn't be that hard to rebuild/restore these things. Same thing goes for diverter valves.

Just thinking out loud...
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  #15  
Old 07-10-2016, 11:30 PM
Mr.Nickey Nova Mr.Nickey Nova is offline
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Default Re: Carburetors and fuel pressure: Please read

I must have good luck with AC Delco replacement pumps. Installed a 40987 on my 69 Z over 10 years ago with no issues yet. Installed a 40727 on my L34 Nova a couple years ago and so far, no issues. All the boxes have a 1995 date on them. So, i even bought some for spares off e-bay to have around. The OEM fuel pump on my L34 began leaking a couple years ago in part to the crap fuel we are using today, i think. I can see this being a problem in the future with the type of fuel we are forced to use today, so i thought i would stock up on a few AC Delco replacement pumps, long before reading this thread.
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Old 07-13-2016, 12:20 PM
Big Block Bill Big Block Bill is offline
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Default Re: Carburetors and fuel pressure: Please read

Mark,

That's exactly what I did to repair the 1969 Z-28. I used one of my older (early 90's) NOS 40987 AC Delco pumps I had in my stock. Didn't want to let it go, but it's what I needed to do.

Bill
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  #17  
Old 03-22-2017, 12:04 AM
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Just had another customer go through this with a rebuilt/restored OEM fuel pump on a `66 Corvette.

Hopefully he'll post up his findings in this thread.
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  #18  
Old 03-22-2017, 12:25 PM
KENNY PASCOE KENNY PASCOE is offline
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Spoke with Eric yesterday about this . Went to fire my L79 Vette for the first time and watched the fuel push right past needle and seat and immediately shut it off . I pinched off fuel line and re fired to let carb run out of fuel . Checked fuel pressure and it hit the gauge at 10lbs ! Fuel pump is out and back to vendor who rebuilt for inspection .
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Old 03-22-2017, 05:55 PM
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Angry

Are these out of spec over-pressure fuel pumps from the same vendor?
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  #20  
Old 05-29-2017, 10:02 PM
dannystarr dannystarr is offline
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I couldn't believe what the pressure was on my car. I wanted to leave an original " AC " embossed pump on my car for the Vintage cert at 2015 MCACN. I rebuilt my dist and carb several times searching for the problem. Spent hundreds of dollars and probably 100 hours! Had 10 people look at it. Bought $650 carb and it did the same thing. Nobody online at any of the Camaro sites ever told me to check my fuel pressure. Maybe they did, I really don't remember, but I don't think so. Everything else was mentioned. I bought the pump from heartbeat city. Searched for the issue for a couple of years. Tons of white smoke at start up and at idle, died at EVERY stop sign, fouling plugs etc etc... It was un-metered fuel pushing past the needle and seat. SO frustrating !! .. Installed pressure regulator in the front of the frame. Hid the lines under the bottom rad hose and BINGO!! Don't have to run a line back to the tank. Took an hour and cost $35! See videos below. Car NEVER ran so well. Thank goodness my friend told me to check it. Danny
https://www.youtube.com/watch?v=UqAz0koDSpQ
https://www.youtube.com/watch?v=QdEhsJqryNc
https://www.youtube.com/watch?v=JwxHpvT9vP0
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