Grand Wagoneer fuel supply problem?
02-05-2006, 09:44 AM
#11
Guest
Posts: n/a
Re: Grand Wagoneer fuel supply problem?
Either a fuel filter going bad or a plugged up air filter on the gas
tank vent would be my guesses.
When was the last time you changed the air filter on the gas tank vent?
When plugged it makes the vehicle act like it runs out of gas. Prime it
or let it sit for a while and the vacuum goes away and you are good to
go for a bit.
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
Canadian Off Road Trips Photos: Non members can still view!
Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
(More Off Road album links at bottom of the view page)
"F. J. Townsend, III" wrote:
>
> Advice from the NG would be most appreciated for the following.
>
> 1989 Grand Wagoneer drives and starts well, but on occasion, will
> stop as if it were out of gas. Cranking does nothing.
>
> What does work is to pour gas into the carb then restart. With
> one or two tries and some pumping the accelerator the Jeep will
> then start and run normally until the next time - days or weeks
> later.
>
> I suspected problems with fuel tank baffles, but adding gas as I
> described shouldn't alleviate that.
>
> Could this be a symptom of a dying fuel pump?
>
> Opinions eagerly solicited!
>
> Thanks,
>
> Frank
tank vent would be my guesses.
When was the last time you changed the air filter on the gas tank vent?
When plugged it makes the vehicle act like it runs out of gas. Prime it
or let it sit for a while and the vacuum goes away and you are good to
go for a bit.
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
Canadian Off Road Trips Photos: Non members can still view!
Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
(More Off Road album links at bottom of the view page)
"F. J. Townsend, III" wrote:
>
> Advice from the NG would be most appreciated for the following.
>
> 1989 Grand Wagoneer drives and starts well, but on occasion, will
> stop as if it were out of gas. Cranking does nothing.
>
> What does work is to pour gas into the carb then restart. With
> one or two tries and some pumping the accelerator the Jeep will
> then start and run normally until the next time - days or weeks
> later.
>
> I suspected problems with fuel tank baffles, but adding gas as I
> described shouldn't alleviate that.
>
> Could this be a symptom of a dying fuel pump?
>
> Opinions eagerly solicited!
>
> Thanks,
>
> Frank
02-05-2006, 09:44 AM
#12
Guest
Posts: n/a
Re: Grand Wagoneer fuel supply problem?
Either a fuel filter going bad or a plugged up air filter on the gas
tank vent would be my guesses.
When was the last time you changed the air filter on the gas tank vent?
When plugged it makes the vehicle act like it runs out of gas. Prime it
or let it sit for a while and the vacuum goes away and you are good to
go for a bit.
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
Canadian Off Road Trips Photos: Non members can still view!
Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
(More Off Road album links at bottom of the view page)
"F. J. Townsend, III" wrote:
>
> Advice from the NG would be most appreciated for the following.
>
> 1989 Grand Wagoneer drives and starts well, but on occasion, will
> stop as if it were out of gas. Cranking does nothing.
>
> What does work is to pour gas into the carb then restart. With
> one or two tries and some pumping the accelerator the Jeep will
> then start and run normally until the next time - days or weeks
> later.
>
> I suspected problems with fuel tank baffles, but adding gas as I
> described shouldn't alleviate that.
>
> Could this be a symptom of a dying fuel pump?
>
> Opinions eagerly solicited!
>
> Thanks,
>
> Frank
tank vent would be my guesses.
When was the last time you changed the air filter on the gas tank vent?
When plugged it makes the vehicle act like it runs out of gas. Prime it
or let it sit for a while and the vacuum goes away and you are good to
go for a bit.
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
Canadian Off Road Trips Photos: Non members can still view!
Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
(More Off Road album links at bottom of the view page)
"F. J. Townsend, III" wrote:
>
> Advice from the NG would be most appreciated for the following.
>
> 1989 Grand Wagoneer drives and starts well, but on occasion, will
> stop as if it were out of gas. Cranking does nothing.
>
> What does work is to pour gas into the carb then restart. With
> one or two tries and some pumping the accelerator the Jeep will
> then start and run normally until the next time - days or weeks
> later.
>
> I suspected problems with fuel tank baffles, but adding gas as I
> described shouldn't alleviate that.
>
> Could this be a symptom of a dying fuel pump?
>
> Opinions eagerly solicited!
>
> Thanks,
>
> Frank
02-05-2006, 09:44 AM
#13
Guest
Posts: n/a
Re: Grand Wagoneer fuel supply problem?
Either a fuel filter going bad or a plugged up air filter on the gas
tank vent would be my guesses.
When was the last time you changed the air filter on the gas tank vent?
When plugged it makes the vehicle act like it runs out of gas. Prime it
or let it sit for a while and the vacuum goes away and you are good to
go for a bit.
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
Canadian Off Road Trips Photos: Non members can still view!
Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
(More Off Road album links at bottom of the view page)
"F. J. Townsend, III" wrote:
>
> Advice from the NG would be most appreciated for the following.
>
> 1989 Grand Wagoneer drives and starts well, but on occasion, will
> stop as if it were out of gas. Cranking does nothing.
>
> What does work is to pour gas into the carb then restart. With
> one or two tries and some pumping the accelerator the Jeep will
> then start and run normally until the next time - days or weeks
> later.
>
> I suspected problems with fuel tank baffles, but adding gas as I
> described shouldn't alleviate that.
>
> Could this be a symptom of a dying fuel pump?
>
> Opinions eagerly solicited!
>
> Thanks,
>
> Frank
tank vent would be my guesses.
When was the last time you changed the air filter on the gas tank vent?
When plugged it makes the vehicle act like it runs out of gas. Prime it
or let it sit for a while and the vacuum goes away and you are good to
go for a bit.
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
Canadian Off Road Trips Photos: Non members can still view!
Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
(More Off Road album links at bottom of the view page)
"F. J. Townsend, III" wrote:
>
> Advice from the NG would be most appreciated for the following.
>
> 1989 Grand Wagoneer drives and starts well, but on occasion, will
> stop as if it were out of gas. Cranking does nothing.
>
> What does work is to pour gas into the carb then restart. With
> one or two tries and some pumping the accelerator the Jeep will
> then start and run normally until the next time - days or weeks
> later.
>
> I suspected problems with fuel tank baffles, but adding gas as I
> described shouldn't alleviate that.
>
> Could this be a symptom of a dying fuel pump?
>
> Opinions eagerly solicited!
>
> Thanks,
>
> Frank
02-05-2006, 10:26 AM
#14
Guest
Posts: n/a
Re: Grand Wagoneer fuel supply problem?
Could it be the float bowl in the carb? Mine drains out
so it takes a few tries to start it each morning. Maybe yours is worse?
Fred
84 GW 5.9
"Mike Romain" <romainm@sympatico.ca> wrote in message
news:43E60F6B.1526C9BE@sympatico.ca...
> Either a fuel filter going bad or a plugged up air filter on the gas
> tank vent would be my guesses.
>
> When was the last time you changed the air filter on the gas tank vent?
> When plugged it makes the vehicle act like it runs out of gas. Prime it
> or let it sit for a while and the vacuum goes away and you are good to
> go for a bit.
>
> Mike
> 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> 88 Cherokee 235 BFG AT's
> Canadian Off Road Trips Photos: Non members can still view!
> Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
> (More Off Road album links at bottom of the view page)
>
> "F. J. Townsend, III" wrote:
>>
>> Advice from the NG would be most appreciated for the following.
>>
>> 1989 Grand Wagoneer drives and starts well, but on occasion, will
>> stop as if it were out of gas. Cranking does nothing.
>>
>> What does work is to pour gas into the carb then restart. With
>> one or two tries and some pumping the accelerator the Jeep will
>> then start and run normally until the next time - days or weeks
>> later.
>>
>> I suspected problems with fuel tank baffles, but adding gas as I
>> described shouldn't alleviate that.
>>
>> Could this be a symptom of a dying fuel pump?
>>
>> Opinions eagerly solicited!
>>
>> Thanks,
>>
>> Frank
so it takes a few tries to start it each morning. Maybe yours is worse?
Fred
84 GW 5.9
"Mike Romain" <romainm@sympatico.ca> wrote in message
news:43E60F6B.1526C9BE@sympatico.ca...
> Either a fuel filter going bad or a plugged up air filter on the gas
> tank vent would be my guesses.
>
> When was the last time you changed the air filter on the gas tank vent?
> When plugged it makes the vehicle act like it runs out of gas. Prime it
> or let it sit for a while and the vacuum goes away and you are good to
> go for a bit.
>
> Mike
> 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> 88 Cherokee 235 BFG AT's
> Canadian Off Road Trips Photos: Non members can still view!
> Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
> (More Off Road album links at bottom of the view page)
>
> "F. J. Townsend, III" wrote:
>>
>> Advice from the NG would be most appreciated for the following.
>>
>> 1989 Grand Wagoneer drives and starts well, but on occasion, will
>> stop as if it were out of gas. Cranking does nothing.
>>
>> What does work is to pour gas into the carb then restart. With
>> one or two tries and some pumping the accelerator the Jeep will
>> then start and run normally until the next time - days or weeks
>> later.
>>
>> I suspected problems with fuel tank baffles, but adding gas as I
>> described shouldn't alleviate that.
>>
>> Could this be a symptom of a dying fuel pump?
>>
>> Opinions eagerly solicited!
>>
>> Thanks,
>>
>> Frank
02-05-2006, 10:26 AM
#15
Guest
Posts: n/a
Re: Grand Wagoneer fuel supply problem?
Could it be the float bowl in the carb? Mine drains out
so it takes a few tries to start it each morning. Maybe yours is worse?
Fred
84 GW 5.9
"Mike Romain" <romainm@sympatico.ca> wrote in message
news:43E60F6B.1526C9BE@sympatico.ca...
> Either a fuel filter going bad or a plugged up air filter on the gas
> tank vent would be my guesses.
>
> When was the last time you changed the air filter on the gas tank vent?
> When plugged it makes the vehicle act like it runs out of gas. Prime it
> or let it sit for a while and the vacuum goes away and you are good to
> go for a bit.
>
> Mike
> 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> 88 Cherokee 235 BFG AT's
> Canadian Off Road Trips Photos: Non members can still view!
> Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
> (More Off Road album links at bottom of the view page)
>
> "F. J. Townsend, III" wrote:
>>
>> Advice from the NG would be most appreciated for the following.
>>
>> 1989 Grand Wagoneer drives and starts well, but on occasion, will
>> stop as if it were out of gas. Cranking does nothing.
>>
>> What does work is to pour gas into the carb then restart. With
>> one or two tries and some pumping the accelerator the Jeep will
>> then start and run normally until the next time - days or weeks
>> later.
>>
>> I suspected problems with fuel tank baffles, but adding gas as I
>> described shouldn't alleviate that.
>>
>> Could this be a symptom of a dying fuel pump?
>>
>> Opinions eagerly solicited!
>>
>> Thanks,
>>
>> Frank
so it takes a few tries to start it each morning. Maybe yours is worse?
Fred
84 GW 5.9
"Mike Romain" <romainm@sympatico.ca> wrote in message
news:43E60F6B.1526C9BE@sympatico.ca...
> Either a fuel filter going bad or a plugged up air filter on the gas
> tank vent would be my guesses.
>
> When was the last time you changed the air filter on the gas tank vent?
> When plugged it makes the vehicle act like it runs out of gas. Prime it
> or let it sit for a while and the vacuum goes away and you are good to
> go for a bit.
>
> Mike
> 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> 88 Cherokee 235 BFG AT's
> Canadian Off Road Trips Photos: Non members can still view!
> Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
> (More Off Road album links at bottom of the view page)
>
> "F. J. Townsend, III" wrote:
>>
>> Advice from the NG would be most appreciated for the following.
>>
>> 1989 Grand Wagoneer drives and starts well, but on occasion, will
>> stop as if it were out of gas. Cranking does nothing.
>>
>> What does work is to pour gas into the carb then restart. With
>> one or two tries and some pumping the accelerator the Jeep will
>> then start and run normally until the next time - days or weeks
>> later.
>>
>> I suspected problems with fuel tank baffles, but adding gas as I
>> described shouldn't alleviate that.
>>
>> Could this be a symptom of a dying fuel pump?
>>
>> Opinions eagerly solicited!
>>
>> Thanks,
>>
>> Frank
02-05-2006, 10:26 AM
#16
Guest
Posts: n/a
Re: Grand Wagoneer fuel supply problem?
Could it be the float bowl in the carb? Mine drains out
so it takes a few tries to start it each morning. Maybe yours is worse?
Fred
84 GW 5.9
"Mike Romain" <romainm@sympatico.ca> wrote in message
news:43E60F6B.1526C9BE@sympatico.ca...
> Either a fuel filter going bad or a plugged up air filter on the gas
> tank vent would be my guesses.
>
> When was the last time you changed the air filter on the gas tank vent?
> When plugged it makes the vehicle act like it runs out of gas. Prime it
> or let it sit for a while and the vacuum goes away and you are good to
> go for a bit.
>
> Mike
> 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> 88 Cherokee 235 BFG AT's
> Canadian Off Road Trips Photos: Non members can still view!
> Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
> (More Off Road album links at bottom of the view page)
>
> "F. J. Townsend, III" wrote:
>>
>> Advice from the NG would be most appreciated for the following.
>>
>> 1989 Grand Wagoneer drives and starts well, but on occasion, will
>> stop as if it were out of gas. Cranking does nothing.
>>
>> What does work is to pour gas into the carb then restart. With
>> one or two tries and some pumping the accelerator the Jeep will
>> then start and run normally until the next time - days or weeks
>> later.
>>
>> I suspected problems with fuel tank baffles, but adding gas as I
>> described shouldn't alleviate that.
>>
>> Could this be a symptom of a dying fuel pump?
>>
>> Opinions eagerly solicited!
>>
>> Thanks,
>>
>> Frank
so it takes a few tries to start it each morning. Maybe yours is worse?
Fred
84 GW 5.9
"Mike Romain" <romainm@sympatico.ca> wrote in message
news:43E60F6B.1526C9BE@sympatico.ca...
> Either a fuel filter going bad or a plugged up air filter on the gas
> tank vent would be my guesses.
>
> When was the last time you changed the air filter on the gas tank vent?
> When plugged it makes the vehicle act like it runs out of gas. Prime it
> or let it sit for a while and the vacuum goes away and you are good to
> go for a bit.
>
> Mike
> 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> 88 Cherokee 235 BFG AT's
> Canadian Off Road Trips Photos: Non members can still view!
> Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
> (More Off Road album links at bottom of the view page)
>
> "F. J. Townsend, III" wrote:
>>
>> Advice from the NG would be most appreciated for the following.
>>
>> 1989 Grand Wagoneer drives and starts well, but on occasion, will
>> stop as if it were out of gas. Cranking does nothing.
>>
>> What does work is to pour gas into the carb then restart. With
>> one or two tries and some pumping the accelerator the Jeep will
>> then start and run normally until the next time - days or weeks
>> later.
>>
>> I suspected problems with fuel tank baffles, but adding gas as I
>> described shouldn't alleviate that.
>>
>> Could this be a symptom of a dying fuel pump?
>>
>> Opinions eagerly solicited!
>>
>> Thanks,
>>
>> Frank
02-05-2006, 10:57 AM
#17
Guest
Posts: n/a
Re: Grand Wagoneer fuel supply problem?
You are now describing an upside down gas filter or a pinhole leak in
the suction side of the gas line.
The filter has 2 outlets. The center outlet goes to the carb and the
top outlet goes to the return line. If the return line outlet isn't
above the carb one, gas will syphon back to the tank air locking the
carb or acting like a vapor lock, which is what the return line is there
to prevent.
If the gas line has a pinhole leak on the suction side, air can get in
and the gas will also all drain back to the tank. Usually these leaks
just leave a slight stain on the line until they get really bad. I
usually see them where the rubber hoses hook to the steel line at the
front or rear of the frame.
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
Canadian Off Road Trips Photos: Non members can still view!
Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
(More Off Road album links at bottom of the view page)
"Fred V." wrote:
>
> Could it be the float bowl in the carb? Mine drains out
> so it takes a few tries to start it each morning. Maybe yours is worse?
>
> Fred
> 84 GW 5.9
>
> "Mike Romain" <romainm@sympatico.ca> wrote in message
> news:43E60F6B.1526C9BE@sympatico.ca...
> > Either a fuel filter going bad or a plugged up air filter on the gas
> > tank vent would be my guesses.
> >
> > When was the last time you changed the air filter on the gas tank vent?
> > When plugged it makes the vehicle act like it runs out of gas. Prime it
> > or let it sit for a while and the vacuum goes away and you are good to
> > go for a bit.
> >
> > Mike
> > 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> > 88 Cherokee 235 BFG AT's
> > Canadian Off Road Trips Photos: Non members can still view!
> > Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
> > (More Off Road album links at bottom of the view page)
> >
> > "F. J. Townsend, III" wrote:
> >>
> >> Advice from the NG would be most appreciated for the following.
> >>
> >> 1989 Grand Wagoneer drives and starts well, but on occasion, will
> >> stop as if it were out of gas. Cranking does nothing.
> >>
> >> What does work is to pour gas into the carb then restart. With
> >> one or two tries and some pumping the accelerator the Jeep will
> >> then start and run normally until the next time - days or weeks
> >> later.
> >>
> >> I suspected problems with fuel tank baffles, but adding gas as I
> >> described shouldn't alleviate that.
> >>
> >> Could this be a symptom of a dying fuel pump?
> >>
> >> Opinions eagerly solicited!
> >>
> >> Thanks,
> >>
> >> Frank
the suction side of the gas line.
The filter has 2 outlets. The center outlet goes to the carb and the
top outlet goes to the return line. If the return line outlet isn't
above the carb one, gas will syphon back to the tank air locking the
carb or acting like a vapor lock, which is what the return line is there
to prevent.
If the gas line has a pinhole leak on the suction side, air can get in
and the gas will also all drain back to the tank. Usually these leaks
just leave a slight stain on the line until they get really bad. I
usually see them where the rubber hoses hook to the steel line at the
front or rear of the frame.
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
Canadian Off Road Trips Photos: Non members can still view!
Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
(More Off Road album links at bottom of the view page)
"Fred V." wrote:
>
> Could it be the float bowl in the carb? Mine drains out
> so it takes a few tries to start it each morning. Maybe yours is worse?
>
> Fred
> 84 GW 5.9
>
> "Mike Romain" <romainm@sympatico.ca> wrote in message
> news:43E60F6B.1526C9BE@sympatico.ca...
> > Either a fuel filter going bad or a plugged up air filter on the gas
> > tank vent would be my guesses.
> >
> > When was the last time you changed the air filter on the gas tank vent?
> > When plugged it makes the vehicle act like it runs out of gas. Prime it
> > or let it sit for a while and the vacuum goes away and you are good to
> > go for a bit.
> >
> > Mike
> > 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> > 88 Cherokee 235 BFG AT's
> > Canadian Off Road Trips Photos: Non members can still view!
> > Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
> > (More Off Road album links at bottom of the view page)
> >
> > "F. J. Townsend, III" wrote:
> >>
> >> Advice from the NG would be most appreciated for the following.
> >>
> >> 1989 Grand Wagoneer drives and starts well, but on occasion, will
> >> stop as if it were out of gas. Cranking does nothing.
> >>
> >> What does work is to pour gas into the carb then restart. With
> >> one or two tries and some pumping the accelerator the Jeep will
> >> then start and run normally until the next time - days or weeks
> >> later.
> >>
> >> I suspected problems with fuel tank baffles, but adding gas as I
> >> described shouldn't alleviate that.
> >>
> >> Could this be a symptom of a dying fuel pump?
> >>
> >> Opinions eagerly solicited!
> >>
> >> Thanks,
> >>
> >> Frank
02-05-2006, 10:57 AM
#18
Guest
Posts: n/a
Re: Grand Wagoneer fuel supply problem?
You are now describing an upside down gas filter or a pinhole leak in
the suction side of the gas line.
The filter has 2 outlets. The center outlet goes to the carb and the
top outlet goes to the return line. If the return line outlet isn't
above the carb one, gas will syphon back to the tank air locking the
carb or acting like a vapor lock, which is what the return line is there
to prevent.
If the gas line has a pinhole leak on the suction side, air can get in
and the gas will also all drain back to the tank. Usually these leaks
just leave a slight stain on the line until they get really bad. I
usually see them where the rubber hoses hook to the steel line at the
front or rear of the frame.
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
Canadian Off Road Trips Photos: Non members can still view!
Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
(More Off Road album links at bottom of the view page)
"Fred V." wrote:
>
> Could it be the float bowl in the carb? Mine drains out
> so it takes a few tries to start it each morning. Maybe yours is worse?
>
> Fred
> 84 GW 5.9
>
> "Mike Romain" <romainm@sympatico.ca> wrote in message
> news:43E60F6B.1526C9BE@sympatico.ca...
> > Either a fuel filter going bad or a plugged up air filter on the gas
> > tank vent would be my guesses.
> >
> > When was the last time you changed the air filter on the gas tank vent?
> > When plugged it makes the vehicle act like it runs out of gas. Prime it
> > or let it sit for a while and the vacuum goes away and you are good to
> > go for a bit.
> >
> > Mike
> > 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> > 88 Cherokee 235 BFG AT's
> > Canadian Off Road Trips Photos: Non members can still view!
> > Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
> > (More Off Road album links at bottom of the view page)
> >
> > "F. J. Townsend, III" wrote:
> >>
> >> Advice from the NG would be most appreciated for the following.
> >>
> >> 1989 Grand Wagoneer drives and starts well, but on occasion, will
> >> stop as if it were out of gas. Cranking does nothing.
> >>
> >> What does work is to pour gas into the carb then restart. With
> >> one or two tries and some pumping the accelerator the Jeep will
> >> then start and run normally until the next time - days or weeks
> >> later.
> >>
> >> I suspected problems with fuel tank baffles, but adding gas as I
> >> described shouldn't alleviate that.
> >>
> >> Could this be a symptom of a dying fuel pump?
> >>
> >> Opinions eagerly solicited!
> >>
> >> Thanks,
> >>
> >> Frank
the suction side of the gas line.
The filter has 2 outlets. The center outlet goes to the carb and the
top outlet goes to the return line. If the return line outlet isn't
above the carb one, gas will syphon back to the tank air locking the
carb or acting like a vapor lock, which is what the return line is there
to prevent.
If the gas line has a pinhole leak on the suction side, air can get in
and the gas will also all drain back to the tank. Usually these leaks
just leave a slight stain on the line until they get really bad. I
usually see them where the rubber hoses hook to the steel line at the
front or rear of the frame.
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
Canadian Off Road Trips Photos: Non members can still view!
Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
(More Off Road album links at bottom of the view page)
"Fred V." wrote:
>
> Could it be the float bowl in the carb? Mine drains out
> so it takes a few tries to start it each morning. Maybe yours is worse?
>
> Fred
> 84 GW 5.9
>
> "Mike Romain" <romainm@sympatico.ca> wrote in message
> news:43E60F6B.1526C9BE@sympatico.ca...
> > Either a fuel filter going bad or a plugged up air filter on the gas
> > tank vent would be my guesses.
> >
> > When was the last time you changed the air filter on the gas tank vent?
> > When plugged it makes the vehicle act like it runs out of gas. Prime it
> > or let it sit for a while and the vacuum goes away and you are good to
> > go for a bit.
> >
> > Mike
> > 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> > 88 Cherokee 235 BFG AT's
> > Canadian Off Road Trips Photos: Non members can still view!
> > Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
> > (More Off Road album links at bottom of the view page)
> >
> > "F. J. Townsend, III" wrote:
> >>
> >> Advice from the NG would be most appreciated for the following.
> >>
> >> 1989 Grand Wagoneer drives and starts well, but on occasion, will
> >> stop as if it were out of gas. Cranking does nothing.
> >>
> >> What does work is to pour gas into the carb then restart. With
> >> one or two tries and some pumping the accelerator the Jeep will
> >> then start and run normally until the next time - days or weeks
> >> later.
> >>
> >> I suspected problems with fuel tank baffles, but adding gas as I
> >> described shouldn't alleviate that.
> >>
> >> Could this be a symptom of a dying fuel pump?
> >>
> >> Opinions eagerly solicited!
> >>
> >> Thanks,
> >>
> >> Frank
02-05-2006, 10:57 AM
#19
Guest
Posts: n/a
Re: Grand Wagoneer fuel supply problem?
You are now describing an upside down gas filter or a pinhole leak in
the suction side of the gas line.
The filter has 2 outlets. The center outlet goes to the carb and the
top outlet goes to the return line. If the return line outlet isn't
above the carb one, gas will syphon back to the tank air locking the
carb or acting like a vapor lock, which is what the return line is there
to prevent.
If the gas line has a pinhole leak on the suction side, air can get in
and the gas will also all drain back to the tank. Usually these leaks
just leave a slight stain on the line until they get really bad. I
usually see them where the rubber hoses hook to the steel line at the
front or rear of the frame.
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
Canadian Off Road Trips Photos: Non members can still view!
Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
(More Off Road album links at bottom of the view page)
"Fred V." wrote:
>
> Could it be the float bowl in the carb? Mine drains out
> so it takes a few tries to start it each morning. Maybe yours is worse?
>
> Fred
> 84 GW 5.9
>
> "Mike Romain" <romainm@sympatico.ca> wrote in message
> news:43E60F6B.1526C9BE@sympatico.ca...
> > Either a fuel filter going bad or a plugged up air filter on the gas
> > tank vent would be my guesses.
> >
> > When was the last time you changed the air filter on the gas tank vent?
> > When plugged it makes the vehicle act like it runs out of gas. Prime it
> > or let it sit for a while and the vacuum goes away and you are good to
> > go for a bit.
> >
> > Mike
> > 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> > 88 Cherokee 235 BFG AT's
> > Canadian Off Road Trips Photos: Non members can still view!
> > Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
> > (More Off Road album links at bottom of the view page)
> >
> > "F. J. Townsend, III" wrote:
> >>
> >> Advice from the NG would be most appreciated for the following.
> >>
> >> 1989 Grand Wagoneer drives and starts well, but on occasion, will
> >> stop as if it were out of gas. Cranking does nothing.
> >>
> >> What does work is to pour gas into the carb then restart. With
> >> one or two tries and some pumping the accelerator the Jeep will
> >> then start and run normally until the next time - days or weeks
> >> later.
> >>
> >> I suspected problems with fuel tank baffles, but adding gas as I
> >> described shouldn't alleviate that.
> >>
> >> Could this be a symptom of a dying fuel pump?
> >>
> >> Opinions eagerly solicited!
> >>
> >> Thanks,
> >>
> >> Frank
the suction side of the gas line.
The filter has 2 outlets. The center outlet goes to the carb and the
top outlet goes to the return line. If the return line outlet isn't
above the carb one, gas will syphon back to the tank air locking the
carb or acting like a vapor lock, which is what the return line is there
to prevent.
If the gas line has a pinhole leak on the suction side, air can get in
and the gas will also all drain back to the tank. Usually these leaks
just leave a slight stain on the line until they get really bad. I
usually see them where the rubber hoses hook to the steel line at the
front or rear of the frame.
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
Canadian Off Road Trips Photos: Non members can still view!
Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
(More Off Road album links at bottom of the view page)
"Fred V." wrote:
>
> Could it be the float bowl in the carb? Mine drains out
> so it takes a few tries to start it each morning. Maybe yours is worse?
>
> Fred
> 84 GW 5.9
>
> "Mike Romain" <romainm@sympatico.ca> wrote in message
> news:43E60F6B.1526C9BE@sympatico.ca...
> > Either a fuel filter going bad or a plugged up air filter on the gas
> > tank vent would be my guesses.
> >
> > When was the last time you changed the air filter on the gas tank vent?
> > When plugged it makes the vehicle act like it runs out of gas. Prime it
> > or let it sit for a while and the vacuum goes away and you are good to
> > go for a bit.
> >
> > Mike
> > 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> > 88 Cherokee 235 BFG AT's
> > Canadian Off Road Trips Photos: Non members can still view!
> > Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
> > (More Off Road album links at bottom of the view page)
> >
> > "F. J. Townsend, III" wrote:
> >>
> >> Advice from the NG would be most appreciated for the following.
> >>
> >> 1989 Grand Wagoneer drives and starts well, but on occasion, will
> >> stop as if it were out of gas. Cranking does nothing.
> >>
> >> What does work is to pour gas into the carb then restart. With
> >> one or two tries and some pumping the accelerator the Jeep will
> >> then start and run normally until the next time - days or weeks
> >> later.
> >>
> >> I suspected problems with fuel tank baffles, but adding gas as I
> >> described shouldn't alleviate that.
> >>
> >> Could this be a symptom of a dying fuel pump?
> >>
> >> Opinions eagerly solicited!
> >>
> >> Thanks,
> >>
> >> Frank
02-05-2006, 12:10 PM
#20
Guest
Posts: n/a
Re: Grand Wagoneer fuel supply problem?
Stuck carb float, clogged fuel filter, bad fuel pump, or pinhole leak
between the pump and the tank.
F. J. Townsend, III proclaimed:
> Yes, carburetor still in place.
>
> Pouring gas in it lets the car start and run again (until it does
> it again).
>
> Its like the carburetor empties but doesn't refill.
>
> "L.W. ("ßill") ------ III" <----------@***.net> wrote in message
> news:43E56B65.E63C0147@***.net...
>
>>Hi Frank,
>> Is your full size wagon still carburated? Usually a fuel
>>pump won't
>>come back to life. Open your gas cap see if you hear a vacuum,
>>indicating your charcoal canister is clogged. Sometimes a
>>clogged fuel
>>filter will allow a little more gas to flow after it sits
>>(common with
>>my old Bronco).
>> God Bless America, Bill O|||||||O
>>mailto:-------------------- http://www.----------.com/
>>
>>"F. J. Townsend, III" wrote:
>>
>>>Advice from the NG would be most appreciated for the
>>>following.
>>>
>>>1989 Grand Wagoneer drives and starts well, but on occasion,
>>>will
>>>stop as if it were out of gas. Cranking does nothing.
>>>
>>>What does work is to pour gas into the carb then restart.
>>>With
>>>one or two tries and some pumping the accelerator the Jeep
>>>will
>>>then start and run normally until the next time - days or
>>>weeks
>>>later.
>>>
>>>I suspected problems with fuel tank baffles, but adding gas
>>>as I
>>>described shouldn't alleviate that.
>>>
>>>Could this be a symptom of a dying fuel pump?
>>>
>>>Opinions eagerly solicited!
>>>
>>>Thanks,
>>>
>>>Frank
>
>
>
between the pump and the tank.
F. J. Townsend, III proclaimed:
> Yes, carburetor still in place.
>
> Pouring gas in it lets the car start and run again (until it does
> it again).
>
> Its like the carburetor empties but doesn't refill.
>
> "L.W. ("ßill") ------ III" <----------@***.net> wrote in message
> news:43E56B65.E63C0147@***.net...
>
>>Hi Frank,
>> Is your full size wagon still carburated? Usually a fuel
>>pump won't
>>come back to life. Open your gas cap see if you hear a vacuum,
>>indicating your charcoal canister is clogged. Sometimes a
>>clogged fuel
>>filter will allow a little more gas to flow after it sits
>>(common with
>>my old Bronco).
>> God Bless America, Bill O|||||||O
>>mailto:-------------------- http://www.----------.com/
>>
>>"F. J. Townsend, III" wrote:
>>
>>>Advice from the NG would be most appreciated for the
>>>following.
>>>
>>>1989 Grand Wagoneer drives and starts well, but on occasion,
>>>will
>>>stop as if it were out of gas. Cranking does nothing.
>>>
>>>What does work is to pour gas into the carb then restart.
>>>With
>>>one or two tries and some pumping the accelerator the Jeep
>>>will
>>>then start and run normally until the next time - days or
>>>weeks
>>>later.
>>>
>>>I suspected problems with fuel tank baffles, but adding gas
>>>as I
>>>described shouldn't alleviate that.
>>>
>>>Could this be a symptom of a dying fuel pump?
>>>
>>>Opinions eagerly solicited!
>>>
>>>Thanks,
>>>
>>>Frank
>
>
>