Ford F53 Fuel pump addition to consider

Joined
Dec 11, 2019
Messages
7
Location
Peachtree City, Georgia
RV Year
1997
RV Make
Coachmen
RV Model
Catalina Class A Motorhome
RV Length
34'
TOW/TOAD
Honda Pilot
We were left stranded due to a fuel pump failure. We had to have it towed 99 miles home. AAA covers 100 miles, so we were lucky it happened where it did.

I learned that the holding tanks are mounted above the fuel tank, so access from the top was not an option. I bought a low pressure electric fuel pump to empty the tank into numerous gas cans and removed the tank. I had the tank cleaned and relined before replacing the pump. I also added an external pump fed off of a port at the bottom of the tank, then ran it to a T fitting I added in the main fuel line. I added two switches in the dash to select either the in tank or external pump. I cycle them occasionally to avoid having fuel go stale in the external pump.

From what I have read on numerous forums, the F53 chassis is prone to the fuel pump failure. I highly recommend adding a backup external pump to avoid being stranded as we were.
 
Joined
Nov 3, 2019
Messages
244
Location
Florida
RV Year
2018
RV Make
Newmar
RV Model
CanyonStar
RV Length
39' 11"
TOW/TOAD
Demco KarKaddy 460SS and VW Passat
Curious, do you run the fuel tank below a 1/4 before refilling it? I have heard several reports from various sources that if you run the tank low the pump tends to overheat?

From link below "To cool and lubricate the internal components, fuel must flow continuously through the fuel pump. Insufficient flow limits cooling and lubrication of the pump. A leading cause of fuel pump failure is running the fuel tank low. This is particularly critical on late model vehicles without a fuel pressure return system. Running such a vehicle out of fuel once can permanently damage the fuel pump. "


 
Joined
Dec 11, 2019
Messages
7
Location
Peachtree City, Georgia
RV Year
1997
RV Make
Coachmen
RV Model
Catalina Class A Motorhome
RV Length
34'
TOW/TOAD
Honda Pilot
I never run it much below half, for that very reason. I learned that the hard way on one of the earlier fuel injected cars I owned. Also, the generator pickup is 1/4 tank off the bottom. We are usually running the generator for the roof top air conditioners. I usually start looking for a suitable gas station when it gets down to 1/2.

In our case, the failure was caused from being stored too long with ethanol fuel. I found the fuel pump intake screen completely plugged with sludge. That is why I had the tank cleaned and relined before I reinstalled it. I pay extra for non ethanol fuel and add Seafoam when I winterize it. Even then I try to drive it around once a month to keep things moving.
 
Joined
Nov 3, 2019
Messages
244
Location
Florida
RV Year
2018
RV Make
Newmar
RV Model
CanyonStar
RV Length
39' 11"
TOW/TOAD
Demco KarKaddy 460SS and VW Passat
Ethanol is a problem. We run highest grade fuel available in an attempt to avoid issues. An aside, the Ford User manual indicates that best performance requires highest grade available and it is "required" when towing. Typically we are at Max GCWR of 30K so we feel it is necessary to use the more expensive fuel.
 
Joined
Nov 3, 2019
Messages
244
Location
Florida
RV Year
2018
RV Make
Newmar
RV Model
CanyonStar
RV Length
39' 11"
TOW/TOAD
Demco KarKaddy 460SS and VW Passat
More info on Ethanol. I didn't realize if the Ethanol separates and mixes with water, as it is hydroscopic, it will NOT recombine with gasoline. I see why you drained and cleaned the tank now.

 
Joined
Nov 15, 2019
Messages
338
Location
DFW, TX
RV Year
2020
RV Make
Newmar
RV Model
New Aire 3543
RV Length
35
TOW/TOAD
2020 Jeep Gladiator
I, too, hate the ethanol. it is particularly hard on small engines. I’ve got a couple of acres, and have to run Sta-Bil in the gas all the time in the zero-turn mower to keep it running well.
 
Joined
Dec 11, 2019
Messages
7
Location
Peachtree City, Georgia
RV Year
1997
RV Make
Coachmen
RV Model
Catalina Class A Motorhome
RV Length
34'
TOW/TOAD
Honda Pilot
More info on Ethanol. I didn't realize if the Ethanol separates and mixes with water, as it is hydroscopic, it will NOT recombine with gasoline. I see why you drained and cleaned the tank now.

Thanks for that link. This is information we need to know!
 
Joined
Nov 9, 2019
Messages
151
Location
Rockville, Va.
RV Year
2020
RV Make
Newmar
RV Model
Canyon Star 3710
RV Length
38
TOW/TOAD
2017 Gmc Terrain & 2017 Chevrolet Colorado ZR-2
For my coach, i always add "Sea Foam" at each fill up. Depending on amount of fuel, 1-3 cans. A bit expensive, but hopefully will eliminate the "fuel separation" potential.
In my lawn mower, chain saws, blower, weed eater, & side by side, I use "non-ethanol" gas. It's much more expensive, but certainly worth it.
 
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