Hello it's been a few months but things have been going well. To serve memory its a 76 f100 460 that had been parked almost 20-years. Everything has been rebuilt and replaced under the hood.. a few motnhs after finishing the rebuild the fuel NEW pump started leaking at the seam. I replaced it and all was well, parked it for a couple months or so but I would always start it 1-2 a week. Yesterday I started it and it started and ran good but then started starving for fuel and eventually died. I didn't have time to check it but it appears to be leaking fuel again, I'll check today, it's 0350 hrs when writing this.

Anyhow:
1. What could cause the pumps to go bad, these are pretty pricey from Napa
2. I'm thinking I might transition to and electric fuel pump. I have a eddlebrock 4-brl on it. If I go electrci what LB pressure would you suggest? 460 engine, it has 4 fuel tanks but I'm only using the seat tank, the others are disconnected.
3. I'll be putting this up for sale soon after getting it all polished up.
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Thanks,

 

It seems that most all of the new fuel pumps being sold are garbage, right out of the box. It doesn't matter the brand name on the box the pump is in, or the brand of engine the pump is on. Hopefully Napa has a warranty, keep taking the junk pumps back to them for replacement, eventually you may get one that lasts. The reason the pumps go bad is the chinese build garbage pumps with no quality control, & foolish American companies buy them because they are cheap.

One of these may work for you, & could be easier to install than an electric pump. https://www.edelbrock.com/performer-...-gph-1726.html

 

Gotcha Thnx

 

Prior to1997 ... I carried a spare on trips, etc ... but one day in 1997 I needed it here at home in my driveway. I pulled the still new spare (likely NAPA) one out of the box from behind my seat, installed it ... it lasted a day or so. I figure the diaphragm was a rubber and aged not well behind the seat.

My last ... and still working today ... fuel pump on my '77 is over 25 years in use now, it was bought at NAPA is all I know now.

I bought a new Carter fuel pump last year, it came sealed air tight in a bag inside the box, it is said to have a new polymer diaphragm suitable for modern fuels. I haven't put it in yet. It is stored on a shelf in my basement. I have a electric pump too, plan is to use both or carry the electric as a spare emergency option to maybe place in a bypass set up. I did see that Carter says maximum pressure is 9 psi, minimum was shown as 6 or 6.5 psi, so I kept my FPR in place before the carburetor, set at 6.5. The pump might pump 9 psi against a blocked fuel outlet, but if the engine is running, it's using fuel, so pressure would drop some, nearer spec 7 psi ... and if not running, neither is the fuel pump.

Mine is a 351M, but they list one for 460s too.

 

Check.
@tbear853 is real close to right-on with his Carter mech pump pressures. I have a Carter on my 460 currently.
It sucks 20-inches and pushes 7-inches using a pressure gauge. Seems to be fine and several year old.

If the new Carters continue to fail, then I would certainly consider the Edelbrock mech pump.

 

Join the club I’ve had 3 mechanical fuel pumps leak and two put out so much pressure the truck wouldn’t idle, all within the past year. At least the first one was old so it had an excuse to fail.
My new ones are coming from O’Reilly, a Precision box with a Carter part number on them made in Mexico.

 

All the reports of new parts being junk is basically true. Exceptionally so for Ford starter relays and any brand replacement fuel pump!
But the key here, to my mind anyway, is that your vehicle sits for extended periods of time. In the last literally 20 years, I have not experienced one single fuel pump on one single brand of vehicle last through an extended sit, after having been run with fuel.
I’ve had quite a few last years on the shelf, but once they have been used, some of them fail after having sat for only a month. Some even sooner, but most within three months.
It’s the same scenario. A few years ago, one on a bronco had only run the vehicle at idle for about 10 minutes. Then it sat for about three months.
Never worked again…

Where did you find the New Jersey built pump? Did it just happen to be the one you bought? Or were you able to search it out specifically by model number?

 

Well, I read it a couple places in a search, but since you asked, I went down and looked all over the box, and it clearly in several languages ... says made in China on the box. It shows a 2020 date too, but that may just be when the box was designed? My bad, I'll have to correct that.

 

Well, bummer in the summer! But, at least it’s still working. So overseas import or not, you may have gotten a good one.
Or am I mixing it up, and that’s the one that is that’s still on the shelf?

 

Yes, the Carter is in a box, sealed in plastic zip lock bag.

The runner in the truck is from about 1997, it was from NAPA is all I know.

 

If you are serious about converting to an electric fuel pump, I would recommend it (and have done it on several cars/trucks). It's not hard, but a little more involved than most might think:
1). You'll need a 12V KEY on power source. Unless you have a new harness (like I do), you'll want to run a waterproof relay.
2). Inertia switch for power which will kill the power if you roll over. I mounted mine on the frame. Power goes to it, then the fuel pump.
3). Fuel pressure regulator closer to the carb. Mine is mounted where 1/2 of the washer fluid container used to be. I say one half because I mounted a 70 mustang fluid reservoir in it's place (same high, 1/2 the width).
4). Fuel filter before and after the fuel pump. I put a 100 micron filter before my pump which is on the frame a little behind the door. 10/20/40 micron fuel filter is on the carb fuel arm.
5). I removed the steel fuel line from the tank to the halfway mark to where I mounted my fuel pump. I used the remainder of the steel line to go to under the hood to the fuel pressure regulator.

Makes starting a carbureted vehicle MUCH easier.

 

Thank you guys lots to thing about. I think I will be putting it up for sale, perhaps Hal’s the easiest is to replace the pump again and cross my fingers it works. I don’t want to see anyone that isn’t right.

buddy is having heart surgery out of state this morning, so when I get home I’ll check it n see what’s what

apprec all the suggestions

 

I purchase a rebuild kit for my Carter fuel pump from Then and Now Automotive in MA. Works perfect and he builds them with materials that can withstand ethanol fuel.


https://www.then-now-auto.com/