Mechanical Fuel Pump Failure

[Tonner]

I just put a brand new mechanical fuel pump on the 350 in my '72. Nothing fancy, just a NAPA OEM type. It ran great for maybe a hundred miles and now it's shooting gas out the weep hole. Would the diaphragm have failed that quickly?

[WhiteCST]

It’s happened to me before on my 53 Kaiser. I’ve had a few bad experiences with mechanical Napa pumps. Still under warranty hopefully?

[Tonner]

If I want to keep it mechanical, what's the best one to get?

[WhiteCST]

I used a precision fuel pump after having 2 failed Napa pumps. Got it from o Reilly’s. Two years and still going strong. Don’t drive the car very much though, too afraid to damage it and parts are almost irreplaceable.

[special-K]

AC Delco

[panhead59]

And don't forget a fuel pressure regulator. Most fuel pumps put out more psi than the 5-6 psi that a typical carb requires. Causes a lot of carb. problems.

[Myoldtruck]

same problem here with a auto zone fuel pump. I installed a a/c delco pump and no more problems.

[Rufas]

I've had great luck with Holley fuel pumps. 7.5 psi no fuel regulator required.



Holley Mechanical Fuel Pumps 12-834

[OregonNed]

Or even an Edelbrock - mine works great - no regulator for the carb.

[4carbcorvair]

Originally Posted by Tonner

NAPA OEM type

You found the problem.

['68OrangeSunshine]

Had the same thing happen to me a few months ago. Old pump [350 V8 in '71 GMC Jimmy] worked about 11 years, then gave out in downtown rush hour traffic. Got towed home. Replaced it with one from O'Reilly's, and got about 100 miles before it was showering the lower engine bay with 93 octane gas! China. Got towed home again, and got my money back from O'RAP, then got a Delphi from AutoZone. They assured me it was made in Troy, Michigan. As I was applying RTV to the gasket, I found the fine print on the box: Korea. But it works OK so far.
They just don't make 'em here anymore. [That may change due to politics, IDK.]
Where they are being made, they ain't making them right, for the most part.
I think it's a plot to make us all drive Priuses.

[Fldawg]

get a carter if you can find them, don,t know if holley or edelbrock bought them out

['68OrangeSunshine]

Originally Posted by Fldawg

get a carter if you can find them, don,t know if holley or edelbrock bought them out

That's what I had -- that lasted 11 years or so. I could not find a new one locally.
Federal Mogul bought Carter out, but still marketed Carter AFB carbs. I looked for a new AFB in 2005, but had to get an Edelbrock. I haven't seen a Carter mechanical pump in years. I hope it's just me and I've been looking in the wrong places. But I dunno.

[Fldawg]

Originally Posted by '68OrangeSunshine

That's what I had -- that lasted 11 years or so. I could not find a new one locally.
Federal Mogul bought Carter out, but still marketed Carter AFB carbs. I looked for a new AFB in 2005, but had to get an Edelbrock. I haven't seen a Carter mechanical pump in years. I hope it's just me and I've been looking in the wrong places. But I dunno.

jegs and summit sell carter fuel pumps just checked, do a google search carter fuel pump

['68OrangeSunshine]

Originally Posted by Fldawg

jegs and summit sell carter fuel pumps just checked, do a google search carter fuel pump

Thanks. I should get one to keep in the between-the-seats-console just in case my Asian one decides to join its most honorable ancestors.

[stsalvage]

Can I say this two word's CHINA/Mexico CHINA/Mexico CHINA/Mexico CHINA/Mexico CHINA/Mexico CHINA/Mexico CHINA/Mexico CHINA/Mexico CHINA/Mexico CHINA/Mexico CHINA/Mexico CHINA/Mexico CHINA/Mexico CHINA/Mexico CHINA/Mexico CHINA/Mexico CHINA/Mexico CHINA/Mexico CHINA/Mexico CHINA/Mexico CHINA/Mexico CHINA/Mexico CHINA/Mexico CHINA/Mexico CHINA/Mexico CHINA/Mexico CHINA/Mexico CHINA/Mexico CHINA/Mexico CHINA/Mexico CHINA/Mexico CHINA/Mexico CHINA/Mexico CHINA/Mexico CHINA/Mexico CHINA/Mexico CHINA/Mexico CHINA/Mexico CHINA/Mexico CHINA/Mexico CHINA/Mexico CHINA/Mexico CHINA/Mexico CHINA/Mexico CHINA/Mexico CHINA/Mexico CHINA/Mexico CHINA/Mexico CHINA/Mexico CHINA/Mexico CHINA/Mexico CHINA/Mexico CHINA/Mexico CHINA/Mexico CHINA/Mexico CHINA/Mexico CHINA/Mexico CHINA/Mexico CHINA/Mexico CHINA/Mexico CHINA/Mexico CHINA/Mexico CHINA/Mexico CHINA/Mexico CHINA/Mexico CHINA/Mexico CHINA/Mexico CHINA/Mexico CHINA/Mexico CHINA/Mexico CHINA/Mexico CHINA/Mexico CHINA/Mexico CHINA/Mexico CHINA/Mexico CHINA/Mexico CHINA/Mexico CHINA/Mexico CHINA/Mexico CHINA/Mexico CHINA/Mexico CHINA/Mexico CHINA/Mexico CHINA/Mexico CHINA/Mexico CHINA/Mexico CHINA/Mexico CHINA/Mexico CHINA/Mexico CHINA/Mexico CHINA/Mexico CHINA/Mexico CHINA/Mexico CHINA/Mexico CHINA/Mexico CHINA/Mexico CHINA/Mexico CHINA/Mexico CHINA/Mexico CHINA/Mexico

[Arnulfo]

I have a electric fuel pump installed inline before the mechanical. I have had the same proplems with the mechanical types.When they die, its always in traffic. So now when that happens, i just flip the switch to the electric and im good to go. Mechanical fuel pumps of today are unreliable.

[mike16]

I bought cheapo pumps from several vendors, 20 bucks they cost and they lasted about 3- 7 months. paid almost 50 dollars and it lasted 6 years......

[jjzepplin]

I use Carter electric. Flip the switch, wait about 10 seconds, Pump the pedal twice and it lights right up with a turn of the key after sitting for weeks. Been using these for 30 years. My old 58 has a mechanical for nostalgic reasons but that is the only car I cannot get to run right. I am having all sorts of issues with pump pressure and the Edelbrock carb.