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Run fuel tank dry, overheat fuel pump?

 

I'm told that in the 1991 Winnebago Warrior toyhouse, the fuel pump is immersed in the gas inside the gas tank (????) and that's how it gets its cooling.? So, if I run the fuel tank dry
or nearly so, I run the risk of overheating and burning out the fuel pump.

That sounds like an OWT to me but anything is possible I guess, so is it true?

(I'm aware of the other, and more realistic, issue of aspirating junk into the fuel pump if the gas runs too low.)

Eric in NH
 

I should clarify... I'm aware that the fuel pump is inside the tank, what I'm having trouble with is the concept that the pump might overheat and burn up if you run the tank dry.
 

I've never heard of a fuel pump overheating. They just don't generate that kind of heat. Think about it. It's in a tank of flammable liquid. Even when it's empty that tank is still full of flammable gas which is even more volatile.
Vehicles exploding is not something manufacturers want to be responsible for. No, you're just going to run out of gas and the fuel pump will stop running when the engine does. The gunk is really the only thing to worry about. And getting stuck in the middle of nowhere of course.
Linda S
 

Thanks, Linda.

About the fuel pump picking up gunk... I found this:



About 2/3 of the way thru that video it shows pulling the fuel pump assembly out of the gas tank.? The fuel pickoff point is at the bottom and looks like a foot.? So it seems that fuel is always drawn from the bottom of the tank, and not some kind of floating pickoff that takes the fuel from near the top of the level.? So how does running the tank dry contribute to picking up gunk if the fuel pickoff point is near the bottom?

Hopefully I can insert a photo here, taken from that video...
 

I don't get the idea of.... When running low on fuel the pump will suck up gunk from the fuel tank... If there is gunk in the tank it will be there all the time... suspended in the liquid gas and consumed by the motor.


On Sat, Oct 28, 2023 at 10:41 AM, Linda S via groups.io
<fly12fire@...> wrote:
I've never heard of a fuel pump overheating. They just don't generate that kind of heat. Think about it. It's in a tank of flammable liquid. Even when it's empty that tank is still full of flammable gas which is even more volatile.
Vehicles exploding is not something manufacturers want to be responsible for. No, you're just going to run out of gas and the fuel pump will stop running when the engine does. The gunk is really the only thing to worry about. And getting stuck in the middle of nowhere of course.
Linda S

 

You didn't do the pump any good, but if the engine was still running the pump was getting some cooling.
IMHO fill up the tank and go for it, but don't do it again.

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