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Old 09-27-2015, 09:18 AM   #1
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Fuel pump for 1984 Ford 460

Hi all
I am having some problems with the fuel pumps on a 84 27ft Ford Cobra motorhome with a 460. It has the external fuel pumps attached inside the frame.

After some checking I realized that the pumps run but will not actually pump the fuel. I took them off and hooked a piece of hose to the pump, then dropped the hose into a samll gas can. I can hear and feel the pump motor working but they just wont move any fuel. It seems odd to me that both pumps would have the same problem at the same time, plus they are both fairly new. They are Napa brand pumps.

So I am looking to replace them, what would you recommend as a reliable replacement that is around $100 each?



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Old 09-27-2015, 01:06 PM   #2
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I have had great luck with Carter electric fuel pump s. Part number 180-p4070.jegs sells them $69.99.Pep boys can get them.regulator not needed. Ken

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Old 09-27-2015, 01:12 PM   #3
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Have you actually disconnected the fuel line between the pump and the carburetor and then run the pump (putting the disconnected fuel line in another container) to rule out the possibility of a problem either in your fuel line or carburetor (such as a collapsed fuel line, clogged float valve or fuel filter). Sometimes its the simple answers we overlook.
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Old 09-27-2015, 02:28 PM   #4
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On other check is look in the intake side of the pump. It may have a screen in it, that gets plugged with rust from the tank.
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Old 10-01-2015, 09:00 AM   #5
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I did put a piece of new fuel line on the pump and put it into a gas can and they would not pump. The filters are clean and the pumps will let gas low through them from a full hose. I am just suspcious that both pumps that are about a year old would have the same problem at the same time.

thanks for yor replys any info helps

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Old 10-02-2015, 08:02 PM   #6
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If you have some cheap type pumps, many times the impeller blades will strip on the motor shaft due to fuel varnish from just sitting for long periods of time. Motor turns, but impeller is stuck/stripped in housing.

You also probably have pusher fuel pumps. One is near gas tank and other is further up the line due to distance, to hold up fuel pressures to carburetor.

With no fuel coming out of either pump, you first need to determine if the fuel filter sock in tank didn't disenagrate and plug up the fuel line. It's possible you may have a plugged fuel line at the tank and tank needs cleaned out.
Del & Jerre w/Isis our English Bull Terrier
The Cougar's Den
1984 Fleetwood Prowler "E"
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Old 10-03-2015, 09:00 AM   #7
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Self priming?

Maybe failed due to long standing or cheap pumps.

Why were both changed?

May be pumps were not bad...

Use oil pump squirter to push oil through the pump and see what it does with that.

Before you replace drop the tank and clean it out.

If yiu have a drain then drain and see what it looks like.

Tony & Lori
1989 Country Coach Savannah SE
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ford, fuel

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