I would try fuel filter first. Starting then running a short distance
then stopping is a classic sign of a clogged filter.

On Tue, 08 Jul 2003 09:26:39 -0400, Aaron Graham
<aarons48willys@NOSPAM.mac.com> wrote:

>About half way home from my local wheeling club meeting, my Jeep started
>choking and skipping and pretty much bucking like a wild Bronco! Then
>spent the next hour driving about 200 yds at a time. I would get it
>started, drive about a 100 yds fine then the motor would start cutting
>out, then would finally die. I sat along the rode for a while, for
>about the 4th time before another guy in a Jeep stopped and offered to
>help. He took me to get some gas, gas gauge does not work, but I had
>only gone 110 of my usual 170 miles between fill ups. Tried adding gas
>but that did not help. Got it started one more time and made it another
>half mile where it would not restart at all. He then offered to tow me
>the rest of the way home, about 3 miles. Got almost home, when going
>around a corner I did not brake enough and I ended up running over my
>tow strap, scuffing it pretty good.
>Went out this morning and it started fine, but is idling a little
>rougher. Going to try to replace plugs, wires, cap, rotor & fuel
>filter. Anything else I should check?

 

That would be my first start too.

Second, I would be wondering about the air filter on the gas tank vent.
If blocked, it can act like that. Quick test for that is to crack the
gas cap open. If the trouble stops change the filter.

Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's

DeepDiver wrote:
>
> I would try fuel filter first. Starting then running a short distance
> then stopping is a classic sign of a clogged filter.
>
> On Tue, 08 Jul 2003 09:26:39 -0400, Aaron Graham
> <aarons48willys@NOSPAM.mac.com> wrote:
>
> >About half way home from my local wheeling club meeting, my Jeep started
> >choking and skipping and pretty much bucking like a wild Bronco! Then
> >spent the next hour driving about 200 yds at a time. I would get it
> >started, drive about a 100 yds fine then the motor would start cutting
> >out, then would finally die. I sat along the rode for a while, for
> >about the 4th time before another guy in a Jeep stopped and offered to
> >help. He took me to get some gas, gas gauge does not work, but I had
> >only gone 110 of my usual 170 miles between fill ups. Tried adding gas
> >but that did not help. Got it started one more time and made it another
> >half mile where it would not restart at all. He then offered to tow me
> >the rest of the way home, about 3 miles. Got almost home, when going
> >around a corner I did not brake enough and I ended up running over my
> >tow strap, scuffing it pretty good.
> >Went out this morning and it started fine, but is idling a little
> >rougher. Going to try to replace plugs, wires, cap, rotor & fuel
> >filter. Anything else I should check?

 

Great follow up Mike. Changing the fuel filter and not solving the
problem then overlooking the air vent filter and moving on to other
areas could drive someone insane! I can see it now...poor guy replaces
EVERYTHING, fuel pump, plugs, ect...finally drops in a new engine and
still doesn't run, so he sells it to his neigbor for 100 bucks.
Neigbor changes vent filter on the spot and drives off, leaving a
crying and broken man that will never recover...=:{)

>That would be my first start too.
>
>Second, I would be wondering about the air filter on the gas tank vent.
>If blocked, it can act like that. Quick test for that is to crack the
>gas cap open. If the trouble stops change the filter.

 

Yup, I was geting ready to go the route of changing out all sorts of stuff
till Mike set me straight on my evap canister problem a couple years back!
Saved me untold time and money with just a simple test!

"DeepDiver" <deepdiver@adelphia.com> wrote in message
news:thnlgvsimkqol02i3rdnni741fcv1oigkv@4ax.com...
> Great follow up Mike. Changing the fuel filter and not solving the
> problem then overlooking the air vent filter and moving on to other
> areas could drive someone insane! I can see it now...poor guy replaces
> EVERYTHING, fuel pump, plugs, ect...finally drops in a new engine and
> still doesn't run, so he sells it to his neigbor for 100 bucks.
> Neigbor changes vent filter on the spot and drives off, leaving a
> crying and broken man that will never recover...=:{)
>
> >That would be my first start too.
> >
> >Second, I would be wondering about the air filter on the gas tank vent.
> >If blocked, it can act like that. Quick test for that is to crack the
> >gas cap open. If the trouble stops change the filter.
>
>

 

All of the emissions stuff has been taken off of my motor so I know it
is not related to the canister. I just replaced the fuel tank vent hose
so I know it does not have a filter that could be clogged.

In article <x8COa.25$uX6.24380@news.uswest.net>, "Kevin Sperle"
<ksperle@nospam.hotmail.com> wrote:

> Yup, I was geting ready to go the route of changing out all sorts of stuff
> till Mike set me straight on my evap canister problem a couple years back!
> Saved me untold time and money with just a simple test!
>
> "DeepDiver" <deepdiver@adelphia.com> wrote in message
> news:thnlgvsimkqol02i3rdnni741fcv1oigkv@4ax.com...
> > Great follow up Mike. Changing the fuel filter and not solving the
> > problem then overlooking the air vent filter and moving on to other
> > areas could drive someone insane! I can see it now...poor guy replaces
> > EVERYTHING, fuel pump, plugs, ect...finally drops in a new engine and
> > still doesn't run, so he sells it to his neigbor for 100 bucks.
> > Neigbor changes vent filter on the spot and drives off, leaving a
> > crying and broken man that will never recover...=:{)
> >
> > >That would be my first start too.
> > >
> > >Second, I would be wondering about the air filter on the gas tank vent.
> > >If blocked, it can act like that. Quick test for that is to crack the
> > >gas cap open. If the trouble stops change the filter.
> >
> >
>
>
--
Aaron Graham
http://homepage.mac.com/aarongraham
1948 ****** & 1979 CJ7
o_o_o_o
/| ,[_____],
|ŻŻŻL --O|||||||O-
()_)Ż()_) ŻŻŻŻŻ )_)

 

So where does your fuel tank now vent to?

Open air?

Mike

Aaron Graham wrote:
>
> All of the emissions stuff has been taken off of my motor so I know it
> is not related to the canister. I just replaced the fuel tank vent hose
> so I know it does not have a filter that could be clogged.
>
> In article <x8COa.25$uX6.24380@news.uswest.net>, "Kevin Sperle"
> <ksperle@nospam.hotmail.com> wrote:
>
> > Yup, I was geting ready to go the route of changing out all sorts of stuff
> > till Mike set me straight on my evap canister problem a couple years back!
> > Saved me untold time and money with just a simple test!
> >
> > "DeepDiver" <deepdiver@adelphia.com> wrote in message
> > news:thnlgvsimkqol02i3rdnni741fcv1oigkv@4ax.com...
> > > Great follow up Mike. Changing the fuel filter and not solving the
> > > problem then overlooking the air vent filter and moving on to other
> > > areas could drive someone insane! I can see it now...poor guy replaces
> > > EVERYTHING, fuel pump, plugs, ect...finally drops in a new engine and
> > > still doesn't run, so he sells it to his neigbor for 100 bucks.
> > > Neigbor changes vent filter on the spot and drives off, leaving a
> > > crying and broken man that will never recover...=:{)
> > >
> > > >That would be my first start too.
> > > >
> > > >Second, I would be wondering about the air filter on the gas tank vent.
> > > >If blocked, it can act like that. Quick test for that is to crack the
> > > >gas cap open. If the trouble stops change the filter.
> > >
> > >
> >
> >
> --
> Aaron Graham
> http://homepage.mac.com/aarongraham
> 1948 ****** & 1979 CJ7
> o_o_o_o
> /| ,[_____],
> |ŻŻŻL --O|||||||O-
> ()_)Ż()_) ŻŻŻŻŻ )_)

 

Yes, goes up to a junction by the filler hole that is under the gas cap.
(or are you talking about the return line from the carb straight to the
tank? That goes in near the gas gauge sender) There is also a smaller
tube on the drivers side of my tank that is connects two smaller outlets
of the tank. I have a poly tank so it may be different, or possibly
installed wrong by the previous owners.

In article <3F0B0AE7.D7CA3C6A@sympatico.ca>, Mike Romain
<romainm@sympatico.ca> wrote:

> So where does your fuel tank now vent to?
>
> Open air?
>
> Mike
>
> Aaron Graham wrote:
> >
> > All of the emissions stuff has been taken off of my motor so I know it
> > is not related to the canister. I just replaced the fuel tank vent
> > hose
> > so I know it does not have a filter that could be clogged.
> >
> > In article <x8COa.25$uX6.24380@news.uswest.net>, "Kevin Sperle"
> > <ksperle@nospam.hotmail.com> wrote:
> >
> > > Yup, I was geting ready to go the route of changing out all sorts of
> > > stuff
> > > till Mike set me straight on my evap canister problem a couple years
> > > back!
> > > Saved me untold time and money with just a simple test!
> > >
> > > "DeepDiver" <deepdiver@adelphia.com> wrote in message
> > > news:thnlgvsimkqol02i3rdnni741fcv1oigkv@4ax.com...
> > > > Great follow up Mike. Changing the fuel filter and not solving the
> > > > problem then overlooking the air vent filter and moving on to other
> > > > areas could drive someone insane! I can see it now...poor guy
> > > > replaces
> > > > EVERYTHING, fuel pump, plugs, ect...finally drops in a new engine
> > > > and
> > > > still doesn't run, so he sells it to his neigbor for 100 bucks.
> > > > Neigbor changes vent filter on the spot and drives off, leaving a
> > > > crying and broken man that will never recover...=:{)
> > > >
> > > > >That would be my first start too.
> > > > >
> > > > >Second, I would be wondering about the air filter on the gas tank
> > > > >vent.
> > > > >If blocked, it can act like that. Quick test for that is to crack
> > > > >the
> > > > >gas cap open. If the trouble stops change the filter.
> > > >
> > > >
> > >
> > >
> > --
> > Aaron Graham
> > http://homepage.mac.com/aarongraham
> > 1948 ****** & 1979 CJ7
> > o_o_o_o
> > /| ,[_____],
> > |ŻŻŻL --O|||||||O-
> > ()_)Ż()_) ŻŻŻŻŻ )_)
--
Aaron Graham
http://homepage.mac.com/aarongraham
1948 ****** & 1979 CJ7
o_o_o_o
/| ,[_____],
|ŻŻŻL --O|||||||O-
()_)Ż()_) ŻŻŻŻŻ )_)

 

Nope, that isn't the gas tank vent, that is the 'full tank' shut off
tube for the gas pump nozzle or anti-backflow tube.

On the poly tank, there are two vents in the top of it. These connect
together on the drivers side and are supposed to go to the charcoal
canister.

Where do they go now?

Mike

Aaron Graham wrote:
>
> Yes, goes up to a junction by the filler hole that is under the gas cap.
> (or are you talking about the return line from the carb straight to the
> tank? That goes in near the gas gauge sender) There is also a smaller
> tube on the drivers side of my tank that is connects two smaller outlets
> of the tank. I have a poly tank so it may be different, or possibly
> installed wrong by the previous owners.
>
> In article <3F0B0AE7.D7CA3C6A@sympatico.ca>, Mike Romain
> <romainm@sympatico.ca> wrote:
>
> > So where does your fuel tank now vent to?
> >
> > Open air?
> >
> > Mike
> >
> > Aaron Graham wrote:
> > >
> > > All of the emissions stuff has been taken off of my motor so I know it
> > > is not related to the canister. I just replaced the fuel tank vent
> > > hose
> > > so I know it does not have a filter that could be clogged.
> > >
> > > In article <x8COa.25$uX6.24380@news.uswest.net>, "Kevin Sperle"
> > > <ksperle@nospam.hotmail.com> wrote:
> > >
> > > > Yup, I was geting ready to go the route of changing out all sorts of
> > > > stuff
> > > > till Mike set me straight on my evap canister problem a couple years
> > > > back!
> > > > Saved me untold time and money with just a simple test!
> > > >
> > > > "DeepDiver" <deepdiver@adelphia.com> wrote in message
> > > > news:thnlgvsimkqol02i3rdnni741fcv1oigkv@4ax.com...
> > > > > Great follow up Mike. Changing the fuel filter and not solving the
> > > > > problem then overlooking the air vent filter and moving on to other
> > > > > areas could drive someone insane! I can see it now...poor guy
> > > > > replaces
> > > > > EVERYTHING, fuel pump, plugs, ect...finally drops in a new engine
> > > > > and
> > > > > still doesn't run, so he sells it to his neigbor for 100 bucks.
> > > > > Neigbor changes vent filter on the spot and drives off, leaving a
> > > > > crying and broken man that will never recover...=:{)
> > > > >
> > > > > >That would be my first start too.
> > > > > >
> > > > > >Second, I would be wondering about the air filter on the gas tank
> > > > > >vent.
> > > > > >If blocked, it can act like that. Quick test for that is to crack
> > > > > >the
> > > > > >gas cap open. If the trouble stops change the filter.
> > > > >
> > > > >
> > > >
> > > >
> > > --
> > > Aaron Graham
> > > http://homepage.mac.com/aarongraham
> > > 1948 ****** & 1979 CJ7
> > > o_o_o_o
> > > /| ,[_____],
> > > |ŻŻŻL --O|||||||O-
> > > ()_)Ż()_) ŻŻŻŻŻ )_)
> --
> Aaron Graham
> http://homepage.mac.com/aarongraham
> 1948 ****** & 1979 CJ7
> o_o_o_o
> /| ,[_____],
> |ŻŻŻL --O|||||||O-
> ()_)Ż()_) ŻŻŻŻŻ )_)

 

In article <3F0B19ED.F616DF0F@sympatico.ca>, Mike Romain
<romainm@sympatico.ca> wrote:

> Nope, that isn't the gas tank vent, that is the 'full tank' shut off
> tube for the gas pump nozzle or anti-backflow tube.
>
> On the poly tank, there are two vents in the top of it. These connect
> together on the drivers side and are supposed to go to the charcoal
> canister.
>
> Where do they go now?

There is just a single hose connecting them together thus not venting
anywhere. I do not have a canister. I assume the gas cap has been
loose enuff to vent the tank for the last two years that the Jeep has
been set up this way. I wonder if the new fill tube and full tank shut
off tube that I just installed two weeks ago have changed the dynamics
of the tank. I really don't think this is the problem as it is still
idling rough, unless I have fouled the plugs to much by trying to limp
home.

I am going to try a new fuel filter tonight, and possibly a friends
PCM(I found out he always carries a spare PCM because of this exact
issue on his CJ7). Also I am going to take a look at the plugs to see
if they are fouled.



>
> Mike
>
> Aaron Graham wrote:
> >
> > Yes, goes up to a junction by the filler hole that is under the gas
> > cap.
> > (or are you talking about the return line from the carb straight to the
> > tank? That goes in near the gas gauge sender) There is also a smaller
> > tube on the drivers side of my tank that is connects two smaller
> > outlets
> > of the tank. I have a poly tank so it may be different, or possibly
> > installed wrong by the previous owners.
> >
> > In article <3F0B0AE7.D7CA3C6A@sympatico.ca>, Mike Romain
> > <romainm@sympatico.ca> wrote:
> >
> > > So where does your fuel tank now vent to?
> > >
> > > Open air?
> > >
> > > Mike
> > >
> > > Aaron Graham wrote:
> > > >
> > > > All of the emissions stuff has been taken off of my motor so I know
> > > > it
> > > > is not related to the canister. I just replaced the fuel tank vent
> > > > hose
> > > > so I know it does not have a filter that could be clogged.
> > > >
> > > > In article <x8COa.25$uX6.24380@news.uswest.net>, "Kevin Sperle"
> > > > <ksperle@nospam.hotmail.com> wrote:
> > > >
> > > > > Yup, I was geting ready to go the route of changing out all sorts
> > > > > of
> > > > > stuff
> > > > > till Mike set me straight on my evap canister problem a couple
> > > > > years
> > > > > back!
> > > > > Saved me untold time and money with just a simple test!
> > > > >
> > > > > "DeepDiver" <deepdiver@adelphia.com> wrote in message
> > > > > news:thnlgvsimkqol02i3rdnni741fcv1oigkv@4ax.com...
> > > > > > Great follow up Mike. Changing the fuel filter and not solving
> > > > > > the
> > > > > > problem then overlooking the air vent filter and moving on to
> > > > > > other
> > > > > > areas could drive someone insane! I can see it now...poor guy
> > > > > > replaces
> > > > > > EVERYTHING, fuel pump, plugs, ect...finally drops in a new
> > > > > > engine
> > > > > > and
> > > > > > still doesn't run, so he sells it to his neigbor for 100 bucks.
> > > > > > Neigbor changes vent filter on the spot and drives off, leaving
> > > > > > a
> > > > > > crying and broken man that will never recover...=:{)
> > > > > >
> > > > > > >That would be my first start too.
> > > > > > >
> > > > > > >Second, I would be wondering about the air filter on the gas
> > > > > > >tank
> > > > > > >vent.
> > > > > > >If blocked, it can act like that. Quick test for that is to
> > > > > > >crack
> > > > > > >the
> > > > > > >gas cap open. If the trouble stops change the filter.
> > > > > >
> > > > > >
> > > > >
> > > > >
> > > > --
> > > > Aaron Graham
> > > > http://homepage.mac.com/aarongraham
> > > > 1948 ****** & 1979 CJ7
> > > > o_o_o_o
> > > > /| ,[_____],
> > > > |ŻŻŻL --O|||||||O-
> > > > ()_)Ż()_) ŻŻŻŻŻ )_)
> > --
> > Aaron Graham
> > http://homepage.mac.com/aarongraham
> > 1948 ****** & 1979 CJ7
> > o_o_o_o
> > /| ,[_____],
> > |ŻŻŻL --O|||||||O-
> > ()_)Ż()_) ŻŻŻŻŻ )_)
--
Aaron Graham
http://homepage.mac.com/aarongraham
1948 ****** & 1979 CJ7
o_o_o_o
/| ,[_____],
|ŻŻŻL --O|||||||O-
()_)Ż()_) ŻŻŻŻŻ )_)

 

Just read that again.

Yup, the new filler hose is 99% the problem. The old one leaked eh?

Mike

Aaron Graham wrote:
>
> In article <3F0B19ED.F616DF0F@sympatico.ca>, Mike Romain
> <romainm@sympatico.ca> wrote:
>
> > Nope, that isn't the gas tank vent, that is the 'full tank' shut off
> > tube for the gas pump nozzle or anti-backflow tube.
> >
> > On the poly tank, there are two vents in the top of it. These connect
> > together on the drivers side and are supposed to go to the charcoal
> > canister.
> >
> > Where do they go now?
>
> There is just a single hose connecting them together thus not venting
> anywhere. I do not have a canister. I assume the gas cap has been
> loose enuff to vent the tank for the last two years that the Jeep has
> been set up this way. I wonder if the new fill tube and full tank shut
> off tube that I just installed two weeks ago have changed the dynamics
> of the tank. I really don't think this is the problem as it is still
> idling rough, unless I have fouled the plugs to much by trying to limp
> home.
>
> I am going to try a new fuel filter tonight, and possibly a friends
> PCM(I found out he always carries a spare PCM because of this exact
> issue on his CJ7). Also I am going to take a look at the plugs to see
> if they are fouled.
>
> >
> > Mike
> >
> > Aaron Graham wrote:
> > >
> > > Yes, goes up to a junction by the filler hole that is under the gas
> > > cap.
> > > (or are you talking about the return line from the carb straight to the
> > > tank? That goes in near the gas gauge sender) There is also a smaller
> > > tube on the drivers side of my tank that is connects two smaller
> > > outlets
> > > of the tank. I have a poly tank so it may be different, or possibly
> > > installed wrong by the previous owners.
> > >
> > > In article <3F0B0AE7.D7CA3C6A@sympatico.ca>, Mike Romain
> > > <romainm@sympatico.ca> wrote:
> > >
> > > > So where does your fuel tank now vent to?
> > > >
> > > > Open air?
> > > >
> > > > Mike
> > > >
> > > > Aaron Graham wrote:
> > > > >
> > > > > All of the emissions stuff has been taken off of my motor so I know
> > > > > it
> > > > > is not related to the canister. I just replaced the fuel tank vent
> > > > > hose
> > > > > so I know it does not have a filter that could be clogged.
> > > > >
> > > > > In article <x8COa.25$uX6.24380@news.uswest.net>, "Kevin Sperle"
> > > > > <ksperle@nospam.hotmail.com> wrote:
> > > > >
> > > > > > Yup, I was geting ready to go the route of changing out all sorts
> > > > > > of
> > > > > > stuff
> > > > > > till Mike set me straight on my evap canister problem a couple
> > > > > > years
> > > > > > back!
> > > > > > Saved me untold time and money with just a simple test!
> > > > > >
> > > > > > "DeepDiver" <deepdiver@adelphia.com> wrote in message
> > > > > > news:thnlgvsimkqol02i3rdnni741fcv1oigkv@4ax.com...
> > > > > > > Great follow up Mike. Changing the fuel filter and not solving
> > > > > > > the
> > > > > > > problem then overlooking the air vent filter and moving on to
> > > > > > > other
> > > > > > > areas could drive someone insane! I can see it now...poor guy
> > > > > > > replaces
> > > > > > > EVERYTHING, fuel pump, plugs, ect...finally drops in a new
> > > > > > > engine
> > > > > > > and
> > > > > > > still doesn't run, so he sells it to his neigbor for 100 bucks.
> > > > > > > Neigbor changes vent filter on the spot and drives off, leaving
> > > > > > > a
> > > > > > > crying and broken man that will never recover...=:{)
> > > > > > >
> > > > > > > >That would be my first start too.
> > > > > > > >
> > > > > > > >Second, I would be wondering about the air filter on the gas
> > > > > > > >tank
> > > > > > > >vent.
> > > > > > > >If blocked, it can act like that. Quick test for that is to
> > > > > > > >crack
> > > > > > > >the
> > > > > > > >gas cap open. If the trouble stops change the filter.
> > > > > > >
> > > > > > >
> > > > > >
> > > > > >
> > > > > --
> > > > > Aaron Graham
> > > > > http://homepage.mac.com/aarongraham
> > > > > 1948 ****** & 1979 CJ7
> > > > > o_o_o_o
> > > > > /| ,[_____],
> > > > > |ŻŻŻL --O|||||||O-
> > > > > ()_)Ż()_) ŻŻŻŻŻ )_)
> > > --
> > > Aaron Graham
> > > http://homepage.mac.com/aarongraham
> > > 1948 ****** & 1979 CJ7
> > > o_o_o_o
> > > /| ,[_____],
> > > |ŻŻŻL --O|||||||O-
> > > ()_)Ż()_) ŻŻŻŻŻ )_)
> --
> Aaron Graham
> http://homepage.mac.com/aarongraham
> 1948 ****** & 1979 CJ7
> o_o_o_o
> /| ,[_____],
> |ŻŻŻL --O|||||||O-
> ()_)Ż()_) ŻŻŻŻŻ )_)