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Default Strange fuel leak

On 8/10/2014 5:07 PM, Howard Beal wrote:
"Lloyd E. Sponenburgh"lloydspinsidemindspring.com wrote in message
. 3.70...
"Howard fired this volley in news:ls8lkl$ebu$1
@speranza.aioe.org:

Any idea why it only leaks when the engine is running?


Sure. The system slightly pressurizes the tank so that tank vapors are
passed back into the intake system.

Shouldn't BE any leaks; the system is designed to be airtight. If so,
it's
probably a sensor/fuel-pickup gasket problem... but it could be a bad
seam.
That's something that needs attention NOW!

In the meanwhile, run your tank no more than 1/2 full to prevent the leak.

Lloyd


Just went out and removed the gas cap so there is no pressure in the tank
still leaks when engine is running.Unlikley to be a bad seam, this car is in
las vegas and does not have any corrosion issues. Tank looks like factory
new. Only has a 1/4 tank of gas.

Best Regards
Tom.



Wild guess?

Fuel return line from the engine has a small leak.
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Default Strange fuel leak

Car is a 2003 mercury sable GS, V6 engine.

Fuel is leaking from the top of the gas tank only when the
engine is running. With the key in the run position i can
hear the fuel pump turn on and pressurize the system
and there are no leaks. It only leaks when the engine is
running. The fuel pressure is within specs. Only 50k
miles. New fuel filter installed. Using shell regular unleaded gas.
No OBD codes when scanned. Check engine light is off.


Any idea why it only leaks when the engine is running?

I did a google search for this problem, no usefull results.

Best Regards
Tom.



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Default Strange fuel leak

"Howard Beal" fired this volley in news:ls8lkl$ebu$1
@speranza.aioe.org:

Any idea why it only leaks when the engine is running?


Sure. The system slightly pressurizes the tank so that tank vapors are
passed back into the intake system.

Shouldn't BE any leaks; the system is designed to be airtight. If so, it's
probably a sensor/fuel-pickup gasket problem... but it could be a bad seam.
That's something that needs attention NOW!

In the meanwhile, run your tank no more than 1/2 full to prevent the leak.

Lloyd
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Default Strange fuel leak

On Sunday, August 10, 2014 1:45:19 PM UTC-7, Howard Beal wrote:
Car is a 2003 mercury sable GS, V6 engine.



Fuel is leaking from the top of the gas tank only when the

engine is running. With the key in the run position i can

hear the fuel pump turn on and pressurize the system

and there are no leaks. It only leaks when the engine is

running. The fuel pressure is within specs. Only 50k

miles. New fuel filter installed. Using shell regular unleaded gas.

No OBD codes when scanned. Check engine light is off.





Any idea why it only leaks when the engine is running?



I did a google search for this problem, no usefull results.



Best Regards

Tom.



Fuel tank leaks are know/frequent problem with Taurus/Sables. Not sure why your search didn't show useful results. Suggest you try he

http://www.taurusclub.com/forum/
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Default Strange fuel leak


"Lloyd E. Sponenburgh" lloydspinsidemindspring.com wrote in message
. 3.70...
"Howard Beal" fired this volley in news:ls8lkl$ebu$1
@speranza.aioe.org:

Any idea why it only leaks when the engine is running?


Sure. The system slightly pressurizes the tank so that tank vapors are
passed back into the intake system.

Shouldn't BE any leaks; the system is designed to be airtight. If so,
it's
probably a sensor/fuel-pickup gasket problem... but it could be a bad
seam.
That's something that needs attention NOW!

In the meanwhile, run your tank no more than 1/2 full to prevent the leak.

Lloyd


Just went out and removed the gas cap so there is no pressure in the tank
still leaks when engine is running.Unlikley to be a bad seam, this car is in
las vegas and does not have any corrosion issues. Tank looks like factory
new. Only has a 1/4 tank of gas.

Best Regards
Tom.




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Default Strange fuel leak


"jon_banquer" wrote in message
...
On Sunday, August 10, 2014 1:45:19 PM UTC-7, Howard Beal wrote:
Car is a 2003 mercury sable GS, V6 engine.



Fuel is leaking from the top of the gas tank only when the

engine is running. With the key in the run position i can

hear the fuel pump turn on and pressurize the system

and there are no leaks. It only leaks when the engine is

running. The fuel pressure is within specs. Only 50k

miles. New fuel filter installed. Using shell regular unleaded gas.

No OBD codes when scanned. Check engine light is off.





Any idea why it only leaks when the engine is running?



I did a google search for this problem, no usefull results.



Best Regards

Tom.



Fuel tank leaks are know/frequent problem with Taurus/Sables. Not sure why
your search didn't show useful results. Suggest you try he

http://www.taurusclub.com/forum/


Thanks for the link. A very good knowledge base for taurus/sable owners.
Saved to my favorites.

Best Regards
Tom.


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Default Strange fuel leak

On Sunday, August 10, 2014 3:11:25 PM UTC-7, Howard Beal wrote:
"jon_banquer" wrote in message

...

On Sunday, August 10, 2014 1:45:19 PM UTC-7, Howard Beal wrote:


Car is a 2003 mercury sable GS, V6 engine.








Fuel is leaking from the top of the gas tank only when the




engine is running. With the key in the run position i can




hear the fuel pump turn on and pressurize the system




and there are no leaks. It only leaks when the engine is




running. The fuel pressure is within specs. Only 50k




miles. New fuel filter installed. Using shell regular unleaded gas.




No OBD codes when scanned. Check engine light is off.












Any idea why it only leaks when the engine is running?








I did a google search for this problem, no usefull results.








Best Regards




Tom.






Fuel tank leaks are know/frequent problem with Taurus/Sables. Not sure why


your search didn't show useful results. Suggest you try he




http://www.taurusclub.com/forum/




Thanks for the link. A very good knowledge base for taurus/sable owners.

Saved to my favorites.



Best Regards

Tom.



Glad I could help.
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Default Strange fuel leak

"Howard Beal" fired this volley in news:ls8qdv$r15$1
@speranza.aioe.org:

Tank looks like factory
new. Only has a 1/4 tank of gas.


You said it was leaking from the TOP. If no pressure, and only 1/4 tank,
then it's got to be the recirculation hose leaking. Excess fuel from the
injector rack goes back to the tank.

LLoyd
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Default Strange fuel leak

On 8/10/2014 6:47 PM, Howard Beal wrote:
"Lloyd E. Sponenburgh"lloydspinsidemindspring.com wrote in message
. 3.70...
"Howard fired this volley in news:ls8qdv$r15$1
@speranza.aioe.org:

Tank looks like factory
new. Only has a 1/4 tank of gas.


You said it was leaking from the TOP. If no pressure, and only 1/4 tank,
then it's got to be the recirculation hose leaking. Excess fuel from the
injector rack goes back to the tank.

LLoyd


I tend to agree, still gonna have to drop the fuel tank to fix it. Gonna
rerout
the fuel return line into a gas can and see if the leak stops. I just hope
its not
a cracked or broken fuel pump output port. New fuel pump is $250.00 Damn
things are all plastic, i don't think they are repairable.


Best Regards
Tom.



There ya go buying those cheap after-market parts.

The fuel pump in my Blazer failed (at 180k).
Right at $1000 from Chevrolet.


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Default Strange fuel leak


"Lloyd E. Sponenburgh" lloydspinsidemindspring.com wrote in message
. 3.70...
"Howard Beal" fired this volley in news:ls8qdv$r15$1
@speranza.aioe.org:

Tank looks like factory
new. Only has a 1/4 tank of gas.


You said it was leaking from the TOP. If no pressure, and only 1/4 tank,
then it's got to be the recirculation hose leaking. Excess fuel from the
injector rack goes back to the tank.

LLoyd


I tend to agree, still gonna have to drop the fuel tank to fix it. Gonna
rerout
the fuel return line into a gas can and see if the leak stops. I just hope
its not
a cracked or broken fuel pump output port. New fuel pump is $250.00 Damn
things are all plastic, i don't think they are repairable.


Best Regards
Tom.




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Default Strange fuel leak


"Richard" wrote in message
...
On 8/10/2014 5:07 PM, Howard Beal wrote:
"Lloyd E. Sponenburgh"lloydspinsidemindspring.com wrote in message
. 3.70...
"Howard fired this volley in
news:ls8lkl$ebu$1
@speranza.aioe.org:

Any idea why it only leaks when the engine is running?

Sure. The system slightly pressurizes the tank so that tank vapors are
passed back into the intake system.

Shouldn't BE any leaks; the system is designed to be airtight. If so,
it's
probably a sensor/fuel-pickup gasket problem... but it could be a bad
seam.
That's something that needs attention NOW!

In the meanwhile, run your tank no more than 1/2 full to prevent the
leak.

Lloyd


Just went out and removed the gas cap so there is no pressure in the tank
still leaks when engine is running.Unlikley to be a bad seam, this car is
in
las vegas and does not have any corrosion issues. Tank looks like factory
new. Only has a 1/4 tank of gas.

Best Regards
Tom.



Wild guess?

Fuel return line from the engine has a small leak.


Thats what i am thinking. Still a big PIA to fix, gotta
drop the gas tank. Luckly it's only gonna be 110
in the shade tomorrow. Its about a 3 hour job according
to reports from people who done it.

Best Regards
Tom.


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Default Strange fuel leak

On Sun, 10 Aug 2014 15:07:01 -0700, "Howard Beal"
wrote:


"Lloyd E. Sponenburgh" lloydspinsidemindspring.com wrote in message
.3.70...
"Howard Beal" fired this volley in news:ls8lkl$ebu$1
@speranza.aioe.org:

Any idea why it only leaks when the engine is running?


Sure. The system slightly pressurizes the tank so that tank vapors are
passed back into the intake system.

Shouldn't BE any leaks; the system is designed to be airtight. If so,
it's
probably a sensor/fuel-pickup gasket problem... but it could be a bad
seam.
That's something that needs attention NOW!

In the meanwhile, run your tank no more than 1/2 full to prevent the leak.

Lloyd


Just went out and removed the gas cap so there is no pressure in the tank
still leaks when engine is running.Unlikley to be a bad seam, this car is in
las vegas and does not have any corrosion issues. Tank looks like factory
new. Only has a 1/4 tank of gas.

Best Regards
Tom.


You have a fuel injector line or attachment that is leaking at one of
the cylinders


--
"Living in the United States now is like being a Tampon.
We're in a great place, just at a bad time."
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Default Strange fuel leak

On Sun, 10 Aug 2014 13:45:19 -0700, "Howard Beal"
wrote:

Car is a 2003 mercury sable GS, V6 engine.

Fuel is leaking from the top of the gas tank only when the
engine is running. With the key in the run position i can
hear the fuel pump turn on and pressurize the system
and there are no leaks. It only leaks when the engine is
running. The fuel pressure is within specs. Only 50k
miles. New fuel filter installed. Using shell regular unleaded gas.
No OBD codes when scanned. Check engine light is off.


Any idea why it only leaks when the engine is running?


Many EFI systems use a fuel return line to route excess fuel from the
pump back to the tank. You probably have a bad line at the tank,
where it switches from steel/copper to rubber to mate with the tank.

I suggest dropping the tank and replacing all lines there, as well as
any other fuel line rubber on the vehicle.



--
Aim for success, not perfection. Never give up your right
to be wrong, because then you will lose the ability to
learn new things and move forward with your life.
-- Dr. David M. Burns
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Default Strange fuel leak


"Larry Jaques" wrote in message
...
On Sun, 10 Aug 2014 13:45:19 -0700, "Howard Beal"
wrote:

Car is a 2003 mercury sable GS, V6 engine.

Fuel is leaking from the top of the gas tank only when the
engine is running. With the key in the run position i can
hear the fuel pump turn on and pressurize the system
and there are no leaks. It only leaks when the engine is
running. The fuel pressure is within specs. Only 50k
miles. New fuel filter installed. Using shell regular unleaded gas.
No OBD codes when scanned. Check engine light is off.


Any idea why it only leaks when the engine is running?


Many EFI systems use a fuel return line to route excess fuel from the
pump back to the tank. You probably have a bad line at the tank,
where it switches from steel/copper to rubber to mate with the tank.

I suggest dropping the tank and replacing all lines there, as well as
any other fuel line rubber on the vehicle.


Yep goona replace all the old lines on the gas tank. I have to drop
the gas tank to see whats going on, might as well replace those 11 year
old hoses.

Best Regards
Tom.


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Default Strange fuel leak


"Richard" wrote in message
m...
On 8/10/2014 6:47 PM, Howard Beal wrote:
"Lloyd E. Sponenburgh"lloydspinsidemindspring.com wrote in message
. 3.70...
"Howard fired this volley in
news:ls8qdv$r15$1
@speranza.aioe.org:

Tank looks like factory
new. Only has a 1/4 tank of gas.


You said it was leaking from the TOP. If no pressure, and only 1/4
tank,
then it's got to be the recirculation hose leaking. Excess fuel from
the
injector rack goes back to the tank.

LLoyd


I tend to agree, still gonna have to drop the fuel tank to fix it. Gonna
rerout
the fuel return line into a gas can and see if the leak stops. I just
hope
its not
a cracked or broken fuel pump output port. New fuel pump is $250.00 Damn
things are all plastic, i don't think they are repairable.


Best Regards
Tom.



There ya go buying those cheap after-market parts.

The fuel pump in my Blazer failed (at 180k).
Right at $1000 from Chevrolet.


Wow thats a pricey fuel pump.

Best Regards
Tom.




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Default Strange fuel leak

On Sun, 10 Aug 2014 10:45:31 -0500, Richard
wrote:

On 8/10/2014 5:07 PM, Howard Beal wrote:
"Lloyd E. Sponenburgh"lloydspinsidemindspring.com wrote in message
. 3.70...
"Howard fired this volley in news:ls8lkl$ebu$1
@speranza.aioe.org:

Any idea why it only leaks when the engine is running?

Sure. The system slightly pressurizes the tank so that tank vapors are
passed back into the intake system.

Shouldn't BE any leaks; the system is designed to be airtight. If so,
it's
probably a sensor/fuel-pickup gasket problem... but it could be a bad
seam.
That's something that needs attention NOW!

In the meanwhile, run your tank no more than 1/2 full to prevent the leak.

Lloyd


Just went out and removed the gas cap so there is no pressure in the tank
still leaks when engine is running.Unlikley to be a bad seam, this car is in
las vegas and does not have any corrosion issues. Tank looks like factory
new. Only has a 1/4 tank of gas.

Best Regards
Tom.



Wild guess?

Fuel return line from the engine has a small leak.

Particularly if there is a rubber hose involved in the return line.
Hot nevada temps - cracked rubber hose - leak when running.
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Default Strange fuel leak

On Sun, 10 Aug 2014 16:53:41 -0700, "Howard Beal"
wrote:


"Richard" wrote in message
...
On 8/10/2014 5:07 PM, Howard Beal wrote:
"Lloyd E. Sponenburgh"lloydspinsidemindspring.com wrote in message
. 3.70...
"Howard fired this volley in
news:ls8lkl$ebu$1
@speranza.aioe.org:

Any idea why it only leaks when the engine is running?

Sure. The system slightly pressurizes the tank so that tank vapors are
passed back into the intake system.

Shouldn't BE any leaks; the system is designed to be airtight. If so,
it's
probably a sensor/fuel-pickup gasket problem... but it could be a bad
seam.
That's something that needs attention NOW!

In the meanwhile, run your tank no more than 1/2 full to prevent the
leak.

Lloyd

Just went out and removed the gas cap so there is no pressure in the tank
still leaks when engine is running.Unlikley to be a bad seam, this car is
in
las vegas and does not have any corrosion issues. Tank looks like factory
new. Only has a 1/4 tank of gas.

Best Regards
Tom.



Wild guess?

Fuel return line from the engine has a small leak.


Thats what i am thinking. Still a big PIA to fix, gotta
drop the gas tank. Luckly it's only gonna be 110
in the shade tomorrow. Its about a 3 hour job according
to reports from people who done it.

Best Regards
Tom.


I dropped the gas tank on my Ranger a couple months ago. Took about 2
hours each way. If I didnt have a work shell on it..Id have lifted
the bed. Next time..Ill left the work shell and then the bed. It will
be quicker


--
"Living in the United States now is like being a Tampon.
We're in a great place, just at a bad time."
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Default Strange fuel leak

On Sun, 10 Aug 2014 16:47:06 -0700, "Howard Beal"
wrote:


"Lloyd E. Sponenburgh" lloydspinsidemindspring.com wrote in message
.3.70...
"Howard Beal" fired this volley in news:ls8qdv$r15$1
@speranza.aioe.org:

Tank looks like factory
new. Only has a 1/4 tank of gas.


You said it was leaking from the TOP. If no pressure, and only 1/4 tank,
then it's got to be the recirculation hose leaking. Excess fuel from the
injector rack goes back to the tank.

LLoyd


I tend to agree, still gonna have to drop the fuel tank to fix it. Gonna
rerout
the fuel return line into a gas can and see if the leak stops. I just hope
its not
a cracked or broken fuel pump output port. New fuel pump is $250.00 Damn
things are all plastic, i don't think they are repairable.


Best Regards
Tom.


Tom...Id certainly check Ebay. They run from $90 up for the entire
assembly. But its probably a busted hose.

Gunner

--
"Living in the United States now is like being a Tampon.
We're in a great place, just at a bad time."
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Default Strange fuel leak

On Sun, 10 Aug 2014 18:25:55 -0500, Richard
wrote:

On 8/10/2014 6:47 PM, Howard Beal wrote:
"Lloyd E. Sponenburgh"lloydspinsidemindspring.com wrote in message
. 3.70...
"Howard fired this volley in news:ls8qdv$r15$1
@speranza.aioe.org:

Tank looks like factory
new. Only has a 1/4 tank of gas.


You said it was leaking from the TOP. If no pressure, and only 1/4 tank,
then it's got to be the recirculation hose leaking. Excess fuel from the
injector rack goes back to the tank.

LLoyd


I tend to agree, still gonna have to drop the fuel tank to fix it. Gonna
rerout
the fuel return line into a gas can and see if the leak stops. I just hope
its not
a cracked or broken fuel pump output port. New fuel pump is $250.00 Damn
things are all plastic, i don't think they are repairable.


Best Regards
Tom.



There ya go buying those cheap after-market parts.

The fuel pump in my Blazer failed (at 180k).
Right at $1000 from Chevrolet.

http://www.ebay.com/itm/FUEL-PUMP-MO...-/400703566243

$35.98

Fuel pump rebuild kit..AC/Delco
http://www.ebay.com/itm/New-ACDelco-.../130940200794?

$44.95

etc etc etc


--
"Living in the United States now is like being a Tampon.
We're in a great place, just at a bad time."
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Default Strange fuel leak

"Gunner Asch" wrote in message
...
On Sun, 10 Aug 2014 16:53:41 -0700, "Howard Beal"

wrote:

I dropped the gas tank on my Ranger a couple months ago. Took about
2
hours each way. If I didnt have a work shell on it..Id have lifted
the bed. Next time..Ill left the work shell and then the bed. It
will
be quicker


The 7' bed comes off my '91 easily, thanks to LPS-3.

Insert a plank or plywood between the bed and the cab to avoid
scratches.

Cut a knot-free 2x6 long enough to catch the lips at the top of the
sides. Put an eye bolt (not screw) in the middle. Set it across the
fender wells.
The lift eye reminds me not to cut it up for something else. The
pullout rating of a 3/8" eye -screw- in pine is marginal for this.

Unplug the electrical connector below the tailgate and remove the
three screws behind the gas cap that hold the filler tube.

Remove the six T-55 bed bolts.

Roll up the shop crane and lift the bed barely clear, then check for
anything missed. I have to remove the gas cap to free the filler
tube. It's easier to pull through or reinsert in the hole when the bed
is slightly raised and swinging free.

Lift the bed above the bumper and roll it away. I leave it upside down
on cribbing to more easily inspect and repair it.

-jsw




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Default Strange fuel leak


Howard Beal wrote:

Car is a 2003 mercury sable GS, V6 engine.

Fuel is leaking from the top of the gas tank only when the
engine is running. With the key in the run position i can
hear the fuel pump turn on and pressurize the system
and there are no leaks. It only leaks when the engine is
running. The fuel pressure is within specs. Only 50k
miles. New fuel filter installed. Using shell regular unleaded gas.
No OBD codes when scanned. Check engine light is off.

Any idea why it only leaks when the engine is running?

I did a google search for this problem, no usefull results.

Best Regards
Tom.


The return line to the tank from the fuel pressure regulator probably
has a leak where it connects to the top of the tank. When the engine is
running there is return flow, when not running no return flow. If you
jumper the fuel pump relay to run the pump with the engine not running
you should see the same leak. When you turn the key on, it only pumps
for a few seconds, not enough to push much if any fuel back through the
return line.
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Default Strange fuel leak

On Sun, 10 Aug 2014 16:47:06 -0700
"Howard Beal" wrote:

snip
its not
a cracked or broken fuel pump output port. New fuel pump is $250.00 Damn
things are all plastic, i don't think they are repairable.


Check prices at Rock Auto:

http://www.rockauto.com/

Just took a quick look and they must have had 20+ different fuel pumps
available with prices starting ~$30. Even if I don't buy from them I
always check pricing to see how bad the local guys are jabbing me...


--
Leon Fisk
Grand Rapids MI/Zone 5b
Remove no.spam for email

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