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Old 11-06-2005, 21:01   #1 (permalink)
Backyard Mechanic
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Info: The 1/4 tank to cool your fuel pump myth

Contrary to what some believe, it's not necessary to keep your tank at
any given level to prevent your fuel pump from "burning out".

Inspection of any pump/sender assy will bear this out. If such were the
case, the pump would be shaped like a large flat can and be right at the
bottom of the tank.

In fact, you are FAR more likely to burn your pump out prematurely if you
have a clogged fuel filter.

It's gas flowing THROUGH the pump that provides the cooling... and on EFI
systems that use fuel rail regulators and return lines, the flow can
diminish enough to allow the pump to overheat while there is still enough
flow to run the engine.

http://tinyurl.com/bne3m



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Old 11-06-2005, 21:01   #2 (permalink)
Spike
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Re: Info: The 1/4 tank to cool your fuel pump myth

On Mon, 07 Nov 2005 04:11:13 GMT, Backyard Mechanic
<pettyfog@yaywho.com> wrote:

>Contrary to what some believe, it's not necessary to keep your tank at
>any given level to prevent your fuel pump from "burning out".
>
>Inspection of any pump/sender assy will bear this out. If such were the
>case, the pump would be shaped like a large flat can and be right at the
>bottom of the tank.
>
>In fact, you are FAR more likely to burn your pump out prematurely if you
>have a clogged fuel filter.


Which is a distinct possibility if the "pump would be shaped like a
large flat can and be right at the bottom of the tank." in most
people's cars.
>
>It's gas flowing THROUGH the pump that provides the cooling... and on EFI
>systems that use fuel rail regulators and return lines, the flow can
>diminish enough to allow the pump to overheat while there is still enough
>flow to run the engine.
>
>http://tinyurl.com/bne3m

--
Spike
1965 Ford Mustang Fastback 2+2, Vintage Burgundy
w/Black Std Interior, A Code 289 C4 Trac-Lok;
Vintage 40 16" rims w/225/50ZR16 KDWS BF Goodrich
gForce Radial T/As, Cobra drop; surround sound
audio-video...
See my ride at....
Feb 2004- http://207.36.208.198/albums/86810/003_May_21_3004.jpg
Feb 2004- http://207.36.208.198/albums/86810/005_May_21_2004.jpg
Jul 2005- http://207.36.208.198/albums/86810/d..._11_05_002.jpg
Jul 2005- http://207.36.208.198/albums/86810/E...ebuild_006.jpg
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Old 11-06-2005, 21:01   #3 (permalink)
Backyard Mechanic
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The 1/4 tank to cool your fuel pump myth

Backyard Mechanic <pettyfog@yaywho.com> wrote:

> The 1/4 tank to cool your fuel pump myth
>


Just checking to see if THIS will show on TAA
- - - - - - -
Contrary to what some believe, it's not necessary to keep your tank at
any given level to prevent your fuel pump from "burning out".

Inspection of any pump/sender assy will bear this out. If such were the
case, the pump would be shaped like a large flat can and be right at the
bottom of the tank.

In fact, you are FAR more likely to burn your pump out prematurely if you
have a clogged fuel filter.

It's gas flowing THROUGH the pump that provides the cooling... and on EFI
systems that use fuel rail regulators and return lines, the flow can
diminish enough to allow the pump to overheat while there is still enough
flow to run the engine.


--
Yeh, I'm a Krusty old Geezer, staving off dementia here..DEAL with it!
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Old 11-06-2005, 21:01   #4 (permalink)
Kevin Bottorff
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Re: Info: The 1/4 tank to cool your fuel pump myth

Spike <jma@snowcrest.net> wrote in
news:55ltm1heq4vo64v70q5v1epp57m38fke40@4ax.com:

> On Mon, 07 Nov 2005 04:11:13 GMT, Backyard Mechanic
> <pettyfog@yaywho.com> wrote:
>
>>Contrary to what some believe, it's not necessary to keep your tank at
>>any given level to prevent your fuel pump from "burning out".
>>
>>Inspection of any pump/sender assy will bear this out. If such were
>>the case, the pump would be shaped like a large flat can and be right
>>at the bottom of the tank.
>>
>>In fact, you are FAR more likely to burn your pump out prematurely if
>>you have a clogged fuel filter.

>
> Which is a distinct possibility if the "pump would be shaped like a
> large flat can and be right at the bottom of the tank." in most
> people's cars.
>>
>>It's gas flowing THROUGH the pump that provides the cooling... and on
>>EFI systems that use fuel rail regulators and return lines, the flow
>>can diminish enough to allow the pump to overheat while there is still
>>enough flow to run the engine.
>>
>>http://tinyurl.com/bne3m


I can guarantie that 80% of the ones I replace when asked, tell me they
run low on fuel much of the time, as in below a quarter tank. The ones
that don`t have far fewer pump problems. Remember the less fuel in the
tank the lower volume to shed heat in the summer wether bypassing or not.
KB

--
ThunderSnake #9 Warn once, shoot twice
460 in the pkup, 460 on the stand for another pkup
and one in the shed for a fun project to yet be decided on
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Old 11-06-2005, 21:01   #5 (permalink)
Backyard Mechanic
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Re: Info: The 1/4 tank to cool your fuel pump myth

Spike <jma@snowcrest.net> wrote:

> Which is a distinct possibility if the "pump would be shaped like a
> large flat can and be right at the bottom of the tank." in most
> people's car


uh.... I would reckon it would still have a boot on the pickup... and the
pickup IS at the bottom, now.

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Old 11-06-2005, 21:01   #6 (permalink)
Shoe Salesman
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Re: The 1/4 tank to cool your fuel pump myth


"Backyard Mechanic" <pettyfog@yaywho.com> wrote in message
news:Xns9706ECFEE746Epettyfogery@207.115.63.158...
> Contrary to what some believe, it's not necessary to keep your tank at
> any given level to prevent your fuel pump from "burning out".
>
> Inspection of any pump/sender assy will bear this out. If such were the
> case, the pump would be shaped like a large flat can and be right at the
> bottom of the tank.
>
> In fact, you are FAR more likely to burn your pump out prematurely if you
> have a clogged fuel filter.
>
> It's gas flowing THROUGH the pump that provides the cooling... and on EFI
> systems that use fuel rail regulators and return lines, the flow can
> diminish enough to allow the pump to overheat while there is still enough
> flow to run the engine.
>
> http://tinyurl.com/bne3m


Your gonna start a fight on this one BM. I think its the "suck air and then
all of a sudden fuel syndrome" that kills the pump if you run it way low.
Think about it, you make a turn the pump sucks air, then you straighten out
and it catches fuel again.(lots of strain on impellers.) Its like revving
your boat with the prop out of water and then suddenly dropping it in the
lake. The prop shear pin will break I bet. (haven't tried it) :)

I do think your right about it not being heat (although I've seen lots of
burned wires on bad in-tank pumps. (on GMs).Come to think of it, I don't
recall the last Ford pump that's has failed, lots of Chevy's though.


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Old 11-06-2005, 22:01   #7 (permalink)
oldkid
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Re: The 1/4 tank to cool your fuel pump myth

well hell nell....explain to me with all this heat and burnin up the
tank just dont EXPLODE!i never understood and still dont how you can
run an electric motor in a gas tank!!??!!especially on FUMES!!

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Old 11-06-2005, 22:01   #8 (permalink)
Backyard Mechanic
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Re: The 1/4 tank to cool your fuel pump myth

"Shoe Salesman" <someone@microsoft.com> wrote:

>
> "Backyard Mechanic" <pettyfog@yaywho.com> wrote in message
> news:Xns9706ECFEE746Epettyfogery@207.115.63.158...
>> Contrary to what some believe, it's not necessary to keep your tank
>> at any given level to prevent your fuel pump from "burning out".
>>
>> Inspection of any pump/sender assy will bear this out. If such were
>> the case, the pump would be shaped like a large flat can and be right
>> at the bottom of the tank.
>>
>> In fact, you are FAR more likely to burn your pump out prematurely if
>> you have a clogged fuel filter.
>>
>> It's gas flowing THROUGH the pump that provides the cooling... and on
>> EFI systems that use fuel rail regulators and return lines, the flow
>> can diminish enough to allow the pump to overheat while there is
>> still enough flow to run the engine.
>>
>> http://tinyurl.com/bne3m

>
> Your gonna start a fight on this one BM. I think its the "suck air and
> then all of a sudden fuel syndrome" that kills the pump if you run it
> way low. Think about it, you make a turn the pump sucks air, then you
> straighten out and it catches fuel again.(lots of strain on
> impellers.) Its like revving your boat with the prop out of water and
> then suddenly dropping it in the lake. The prop shear pin will break I
> bet. (haven't tried it) :)
>
> I do think your right about it not being heat (although I've seen lots
> of burned wires on bad in-tank pumps. (on GMs).Come to think of it, I
> don't recall the last Ford pump that's has failed, lots of Chevy's
> though.


What i SAID was the fuel running through it cools it, doesnt have to have
fuel around it.

Obviously running it dry is NOT good for it.

And no the shear pin on a boat prop doesnt break that easy.



--
Yeh, I'm a Krusty old Geezer, staving off dementia here..DEAL with it!
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Old 11-06-2005, 22:01   #9 (permalink)
Backyard Mechanic
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Re: The 1/4 tank to cool your fuel pump myth

"oldkid" <o2pz5y402@sneakemail.com> wrote:

> well hell nell....explain to me with all this heat and burnin up the
> tank just dont EXPLODE!i never understood and still dont how you can
> run an electric motor in a gas tank!!??!!especially on FUMES!!
>


Well, if you cant figger that out, I prolly cant explain it... unless you
understand why an engine wont fire when it's flooded.

Didnt you ever see a ... never mind,, if I describe it, someone will "jack-
ass" it.

;)

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Old 11-06-2005, 23:01   #10 (permalink)
Spike
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Re: Info: The 1/4 tank to cool your fuel pump myth

On Mon, 07 Nov 2005 04:25:28 GMT, Backyard Mechanic
<pettyfog@yaywho.com> wrote:

>Spike <jma@snowcrest.net> wrote:
>
>> Which is a distinct possibility if the "pump would be shaped like a
>> large flat can and be right at the bottom of the tank." in most
>> people's car

>
>uh.... I would reckon it would still have a boot on the pickup... and the
>pickup IS at the bottom, now.

LOL Well if you're gonna be picky about it... : 0 )
--
Spike
1965 Ford Mustang Fastback 2+2, Vintage Burgundy
w/Black Std Interior, A Code 289 C4 Trac-Lok;
Vintage 40 16" rims w/225/50ZR16 KDWS BF Goodrich
gForce Radial T/As, Cobra drop; surround sound
audio-video...
See my ride at....
Feb 2004- http://207.36.208.198/albums/86810/003_May_21_3004.jpg
Feb 2004- http://207.36.208.198/albums/86810/005_May_21_2004.jpg
Jul 2005- http://207.36.208.198/albums/86810/d..._11_05_002.jpg
Jul 2005- http://207.36.208.198/albums/86810/E...ebuild_006.jpg
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