LOL! No.

The gaskets are synthetic rubber and our 88's was still fine to use with
a new tank.

It sounds like you are going to have to drop the tank for a look.

Mike


zarro wrote:
>
> Hi. thanks for the reply
>
> I crawled under the car and the leak definitly comes form either the
> fuel pump cover or the valve. The pump is mounted in a indentaion in
> the top of the tank and the gas funnels out from that., If the filler
> hose was leaking the fuel would pour down from it, down the side that
> wouldn't it? "My leak" pours down the front of the tank just behind
> the differential. Also the leak stopped very quickly - my guess is
> that it was only the fuel in the filler hose the driained awy. Efter
> the leak had stopped the fuel gauge stull read full. My mechaniv
> suggested that due to my habit of not filling the tank all the way up
> the gasket on the fuel pump cover might have dried up and cracked. Is
> that likely?
>
> Regards Snowman
>
> Mike Romain <romainm@sympatico.ca> wrote in message news:<422DAEB9.8744253F@sympatico.ca>...
> > Did you see the leak or are you guessing?
> >
> > I have heard of more filler hose leaks than pump gasket leaks. The
> > filler hose has a clamp on the tank that gets a bit loose. I don't know
> > where your pump is, but on our Cherokee we would have to get down to 3/4
> > or lower to stop it's gasket from leaking and the pressure vent is dead
> > top center so only the fuel that goes up the filler pipe can leak out of
> > it, once the filler has emptied no more top leak.
> >
> > I have never heard of the pressure relief valve leaking, but....
> >
> > Mike
> > 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> > 88 Cherokee 235 BFG AT's
> >
> > zarro wrote:
> > >
> > > Hi
> > > When filling up my ´94 Gr. Cherokee the other day I discovered it was
> > > leaking fuel. The leak seems to originate from either the fuel pump
> > > mounting or the pressure release velve on the the top of the tank. (So
> > > when those first few liters in the top of the tank had drained away,
> > > it stopped..) I've understood that the gasket on the fuel punmp cover
> > > can start to leak which means i'll have to change it. What i'm
> > > woondering is if anyone has any experience with the pressure release
> > > valve leaking? We'we had very cold weather (- 20 C) for several days
> > > preceding me discovering the leak. Might this have anything to do with
> > > it?
> > >
> > > Regards - Snowman

 

LOL! No.

The gaskets are synthetic rubber and our 88's was still fine to use with
a new tank.

It sounds like you are going to have to drop the tank for a look.

Mike


zarro wrote:
>
> Hi. thanks for the reply
>
> I crawled under the car and the leak definitly comes form either the
> fuel pump cover or the valve. The pump is mounted in a indentaion in
> the top of the tank and the gas funnels out from that., If the filler
> hose was leaking the fuel would pour down from it, down the side that
> wouldn't it? "My leak" pours down the front of the tank just behind
> the differential. Also the leak stopped very quickly - my guess is
> that it was only the fuel in the filler hose the driained awy. Efter
> the leak had stopped the fuel gauge stull read full. My mechaniv
> suggested that due to my habit of not filling the tank all the way up
> the gasket on the fuel pump cover might have dried up and cracked. Is
> that likely?
>
> Regards Snowman
>
> Mike Romain <romainm@sympatico.ca> wrote in message news:<422DAEB9.8744253F@sympatico.ca>...
> > Did you see the leak or are you guessing?
> >
> > I have heard of more filler hose leaks than pump gasket leaks. The
> > filler hose has a clamp on the tank that gets a bit loose. I don't know
> > where your pump is, but on our Cherokee we would have to get down to 3/4
> > or lower to stop it's gasket from leaking and the pressure vent is dead
> > top center so only the fuel that goes up the filler pipe can leak out of
> > it, once the filler has emptied no more top leak.
> >
> > I have never heard of the pressure relief valve leaking, but....
> >
> > Mike
> > 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> > 88 Cherokee 235 BFG AT's
> >
> > zarro wrote:
> > >
> > > Hi
> > > When filling up my ´94 Gr. Cherokee the other day I discovered it was
> > > leaking fuel. The leak seems to originate from either the fuel pump
> > > mounting or the pressure release velve on the the top of the tank. (So
> > > when those first few liters in the top of the tank had drained away,
> > > it stopped..) I've understood that the gasket on the fuel punmp cover
> > > can start to leak which means i'll have to change it. What i'm
> > > woondering is if anyone has any experience with the pressure release
> > > valve leaking? We'we had very cold weather (- 20 C) for several days
> > > preceding me discovering the leak. Might this have anything to do with
> > > it?
> > >
> > > Regards - Snowman

 

LOL! No.

The gaskets are synthetic rubber and our 88's was still fine to use with
a new tank.

It sounds like you are going to have to drop the tank for a look.

Mike


zarro wrote:
>
> Hi. thanks for the reply
>
> I crawled under the car and the leak definitly comes form either the
> fuel pump cover or the valve. The pump is mounted in a indentaion in
> the top of the tank and the gas funnels out from that., If the filler
> hose was leaking the fuel would pour down from it, down the side that
> wouldn't it? "My leak" pours down the front of the tank just behind
> the differential. Also the leak stopped very quickly - my guess is
> that it was only the fuel in the filler hose the driained awy. Efter
> the leak had stopped the fuel gauge stull read full. My mechaniv
> suggested that due to my habit of not filling the tank all the way up
> the gasket on the fuel pump cover might have dried up and cracked. Is
> that likely?
>
> Regards Snowman
>
> Mike Romain <romainm@sympatico.ca> wrote in message news:<422DAEB9.8744253F@sympatico.ca>...
> > Did you see the leak or are you guessing?
> >
> > I have heard of more filler hose leaks than pump gasket leaks. The
> > filler hose has a clamp on the tank that gets a bit loose. I don't know
> > where your pump is, but on our Cherokee we would have to get down to 3/4
> > or lower to stop it's gasket from leaking and the pressure vent is dead
> > top center so only the fuel that goes up the filler pipe can leak out of
> > it, once the filler has emptied no more top leak.
> >
> > I have never heard of the pressure relief valve leaking, but....
> >
> > Mike
> > 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> > 88 Cherokee 235 BFG AT's
> >
> > zarro wrote:
> > >
> > > Hi
> > > When filling up my ´94 Gr. Cherokee the other day I discovered it was
> > > leaking fuel. The leak seems to originate from either the fuel pump
> > > mounting or the pressure release velve on the the top of the tank. (So
> > > when those first few liters in the top of the tank had drained away,
> > > it stopped..) I've understood that the gasket on the fuel punmp cover
> > > can start to leak which means i'll have to change it. What i'm
> > > woondering is if anyone has any experience with the pressure release
> > > valve leaking? We'we had very cold weather (- 20 C) for several days
> > > preceding me discovering the leak. Might this have anything to do with
> > > it?
> > >
> > > Regards - Snowman

 

As Doug, and Mike already have said it is very rare for that O ring
to leak once seated, it under no twisting action that may wear them out,
like their use at the Air Conditioning, power steering, and automatic
transmission connection. http://www.----------.com/01XJfuelPump.pdf
God Bless America, ßill O|||||||O
mailto:--------------------

zarro wrote:
>
> Hi. thanks for the reply
>
> I crawled under the car and the leak definitly comes form either the
> fuel pump cover or the valve. The pump is mounted in a indentaion in
> the top of the tank and the gas funnels out from that., If the filler
> hose was leaking the fuel would pour down from it, down the side that
> wouldn't it? "My leak" pours down the front of the tank just behind
> the differential. Also the leak stopped very quickly - my guess is
> that it was only the fuel in the filler hose the driained awy. Efter
> the leak had stopped the fuel gauge stull read full. My mechaniv
> suggested that due to my habit of not filling the tank all the way up
> the gasket on the fuel pump cover might have dried up and cracked. Is
> that likely?
>
> Regards Snowman
>
> Mike Romain <romainm@sympatico.ca> wrote in message news:<422DAEB9.8744253F@sympatico.ca>...
> > Did you see the leak or are you guessing?
> >
> > I have heard of more filler hose leaks than pump gasket leaks. The
> > filler hose has a clamp on the tank that gets a bit loose. I don't know
> > where your pump is, but on our Cherokee we would have to get down to 3/4
> > or lower to stop it's gasket from leaking and the pressure vent is dead
> > top center so only the fuel that goes up the filler pipe can leak out of
> > it, once the filler has emptied no more top leak.
> >
> > I have never heard of the pressure relief valve leaking, but....
> >
> > Mike
> > 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> > 88 Cherokee 235 BFG AT's
> >
> > zarro wrote:
> > >
> > > Hi
> > > When filling up my ´94 Gr. Cherokee the other day I discovered it was
> > > leaking fuel. The leak seems to originate from either the fuel pump
> > > mounting or the pressure release velve on the the top of the tank. (So
> > > when those first few liters in the top of the tank had drained away,
> > > it stopped..) I've understood that the gasket on the fuel punmp cover
> > > can start to leak which means i'll have to change it. What i'm
> > > woondering is if anyone has any experience with the pressure release
> > > valve leaking? We'we had very cold weather (- 20 C) for several days
> > > preceding me discovering the leak. Might this have anything to do with
> > > it?
> > >
> > > Regards - Snowman

 

As Doug, and Mike already have said it is very rare for that O ring
to leak once seated, it under no twisting action that may wear them out,
like their use at the Air Conditioning, power steering, and automatic
transmission connection. http://www.----------.com/01XJfuelPump.pdf
God Bless America, ßill O|||||||O
mailto:--------------------

zarro wrote:
>
> Hi. thanks for the reply
>
> I crawled under the car and the leak definitly comes form either the
> fuel pump cover or the valve. The pump is mounted in a indentaion in
> the top of the tank and the gas funnels out from that., If the filler
> hose was leaking the fuel would pour down from it, down the side that
> wouldn't it? "My leak" pours down the front of the tank just behind
> the differential. Also the leak stopped very quickly - my guess is
> that it was only the fuel in the filler hose the driained awy. Efter
> the leak had stopped the fuel gauge stull read full. My mechaniv
> suggested that due to my habit of not filling the tank all the way up
> the gasket on the fuel pump cover might have dried up and cracked. Is
> that likely?
>
> Regards Snowman
>
> Mike Romain <romainm@sympatico.ca> wrote in message news:<422DAEB9.8744253F@sympatico.ca>...
> > Did you see the leak or are you guessing?
> >
> > I have heard of more filler hose leaks than pump gasket leaks. The
> > filler hose has a clamp on the tank that gets a bit loose. I don't know
> > where your pump is, but on our Cherokee we would have to get down to 3/4
> > or lower to stop it's gasket from leaking and the pressure vent is dead
> > top center so only the fuel that goes up the filler pipe can leak out of
> > it, once the filler has emptied no more top leak.
> >
> > I have never heard of the pressure relief valve leaking, but....
> >
> > Mike
> > 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> > 88 Cherokee 235 BFG AT's
> >
> > zarro wrote:
> > >
> > > Hi
> > > When filling up my ´94 Gr. Cherokee the other day I discovered it was
> > > leaking fuel. The leak seems to originate from either the fuel pump
> > > mounting or the pressure release velve on the the top of the tank. (So
> > > when those first few liters in the top of the tank had drained away,
> > > it stopped..) I've understood that the gasket on the fuel punmp cover
> > > can start to leak which means i'll have to change it. What i'm
> > > woondering is if anyone has any experience with the pressure release
> > > valve leaking? We'we had very cold weather (- 20 C) for several days
> > > preceding me discovering the leak. Might this have anything to do with
> > > it?
> > >
> > > Regards - Snowman

 

As Doug, and Mike already have said it is very rare for that O ring
to leak once seated, it under no twisting action that may wear them out,
like their use at the Air Conditioning, power steering, and automatic
transmission connection. http://www.----------.com/01XJfuelPump.pdf
God Bless America, ßill O|||||||O
mailto:--------------------

zarro wrote:
>
> Hi. thanks for the reply
>
> I crawled under the car and the leak definitly comes form either the
> fuel pump cover or the valve. The pump is mounted in a indentaion in
> the top of the tank and the gas funnels out from that., If the filler
> hose was leaking the fuel would pour down from it, down the side that
> wouldn't it? "My leak" pours down the front of the tank just behind
> the differential. Also the leak stopped very quickly - my guess is
> that it was only the fuel in the filler hose the driained awy. Efter
> the leak had stopped the fuel gauge stull read full. My mechaniv
> suggested that due to my habit of not filling the tank all the way up
> the gasket on the fuel pump cover might have dried up and cracked. Is
> that likely?
>
> Regards Snowman
>
> Mike Romain <romainm@sympatico.ca> wrote in message news:<422DAEB9.8744253F@sympatico.ca>...
> > Did you see the leak or are you guessing?
> >
> > I have heard of more filler hose leaks than pump gasket leaks. The
> > filler hose has a clamp on the tank that gets a bit loose. I don't know
> > where your pump is, but on our Cherokee we would have to get down to 3/4
> > or lower to stop it's gasket from leaking and the pressure vent is dead
> > top center so only the fuel that goes up the filler pipe can leak out of
> > it, once the filler has emptied no more top leak.
> >
> > I have never heard of the pressure relief valve leaking, but....
> >
> > Mike
> > 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> > 88 Cherokee 235 BFG AT's
> >
> > zarro wrote:
> > >
> > > Hi
> > > When filling up my ´94 Gr. Cherokee the other day I discovered it was
> > > leaking fuel. The leak seems to originate from either the fuel pump
> > > mounting or the pressure release velve on the the top of the tank. (So
> > > when those first few liters in the top of the tank had drained away,
> > > it stopped..) I've understood that the gasket on the fuel punmp cover
> > > can start to leak which means i'll have to change it. What i'm
> > > woondering is if anyone has any experience with the pressure release
> > > valve leaking? We'we had very cold weather (- 20 C) for several days
> > > preceding me discovering the leak. Might this have anything to do with
> > > it?
> > >
> > > Regards - Snowman