ditto.
:)
"Mike Romain" <romainm@sympatico.ca> wrote in message
news:40A24910.4395B719@sympatico.ca...
> Ok, you have the YFA carb.
>
> The fact that it runs pretty decent with the stepper unplugged would
> lead me to believe the mix is at least 'close' by default.
>
> The YFA with the stepper still has the manual mix screw, same as the
> BBD. They hide it under a metal plug in the base plate of the carb.
> Some you can pull the blocking plug out with a point, others have to be
> drilled and pried out.
>
> If you set the carb with the throttle lever in front of you, the mix
> screw will be in the base to your right under the plug likely.
>
> I would highly recommend you get the Haynes CJ manual. It has a great
> section on the carbs.
>
> Mike
> 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> 88 Cherokee 235 BFG AT's
>
> Chip wrote:
> >
> > The computer was not functioning so the stepper motor was inoperable (or
at
> > least was not being run by the bad computer) Before the bypass was
> > complete, my father started the motor, it ran terrible until he uplugged
the
> > stepper motor, then it ran smooth. How can you tell where the stepper
motor
> > should be and how do you get it there if it is in the wrong place, which
it
> > obviously is because of the amount of gas running through it.
> >
> > Short of solving this carb trouble, what kind of pre-83 carb will fit
the
> > 150 engine?
> >
> > Thanks again,
> >
> > Chip
> >
> > "serg" <sfonNOSPAM@yahoo.com> wrote in message
> > news:2gad30Fiu7bU1@uni-berlin.de...
> > > did u make sure the stepper motor was in the right position before
turning
> > > it off? i never did the nutter bypass in mine before i took it off but
i
> > > remember you had to have the motor in a certain position before
cutting
> > the
> > > wire. is your 02 sensor alive?
> > >
> > > "Chip" <cjenkins1@nospam.neo.rr.com> wrote in message
> > > news:oRSnc.1090$OE3.804@fe1.columbus.rr.com...
> > > > I have a question concerning an '84 CJ with the AMC 150 4 cyl engine
and
> > > one
> > > > of those terrible Carter carburetors with a Nutter bypass performed.
> > Keep
> > > > in mind with this question that the catalytic converter needs to be
> > > replaced
> > > > and another one is on order. Here's the present trouble: The stepper
> > > motor,
> > > > which I believe controls the amount of fuel, has been disconnected
as
> > part
> > > > of the bypass. The gas to air ratio is too rich and there is really
no
> > way
> > > > to adjust it, or so I'm told. I'm not sure how much the catalytic
> > > converter
> > > > has to do with this but, how can the fuel mixture be adjusted with
the
> > > > bypass in place?
> > > >
> > > >
> > > >
> > > > Thanks,
> > > >
> > > > Chip
> > > >
> > > >
> > > >
> > > >
> > > >
> > > >
> > >
> > >

 

Dad took the motor off and put a plate over the port in place of the gasket.
We now suspect that it's not the source of the problem. The engine is just
getting too much fuel. It will run but, it floods easily, and when ever it
warms up, the fuel smell is very strong. To start it when it's warm, you
almost have to treat it like a flooded engine just to get it going.

I told dad the there are a vast number of people on the newsgroups and
someone will be able to diagnose the problem with us. Thanks to Mike, Bill
and Serg for their help so far.

I believe that he is going to get a rebuild kit for the carb and go from
there, but I will tell him about the mix screw location.

Thanks Again,

Chip


"Mike Romain" <romainm@sympatico.ca> wrote in message
news:40A24910.4395B719@sympatico.ca...
> Ok, you have the YFA carb.
>
> The fact that it runs pretty decent with the stepper unplugged would
> lead me to believe the mix is at least 'close' by default.
>
> The YFA with the stepper still has the manual mix screw, same as the
> BBD. They hide it under a metal plug in the base plate of the carb.
> Some you can pull the blocking plug out with a point, others have to be
> drilled and pried out.
>
> If you set the carb with the throttle lever in front of you, the mix
> screw will be in the base to your right under the plug likely.
>
> I would highly recommend you get the Haynes CJ manual. It has a great
> section on the carbs.
>
> Mike
> 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> 88 Cherokee 235 BFG AT's
>
> Chip wrote:
> >
> > The computer was not functioning so the stepper motor was inoperable (or
at
> > least was not being run by the bad computer) Before the bypass was
> > complete, my father started the motor, it ran terrible until he uplugged
the
> > stepper motor, then it ran smooth. How can you tell where the stepper
motor
> > should be and how do you get it there if it is in the wrong place, which
it
> > obviously is because of the amount of gas running through it.
> >
> > Short of solving this carb trouble, what kind of pre-83 carb will fit
the
> > 150 engine?
> >
> > Thanks again,
> >
> > Chip
> >
> > "serg" <sfonNOSPAM@yahoo.com> wrote in message
> > news:2gad30Fiu7bU1@uni-berlin.de...
> > > did u make sure the stepper motor was in the right position before
turning
> > > it off? i never did the nutter bypass in mine before i took it off but
i
> > > remember you had to have the motor in a certain position before
cutting
> > the
> > > wire. is your 02 sensor alive?
> > >
> > > "Chip" <cjenkins1@nospam.neo.rr.com> wrote in message
> > > news:oRSnc.1090$OE3.804@fe1.columbus.rr.com...
> > > > I have a question concerning an '84 CJ with the AMC 150 4 cyl engine
and
> > > one
> > > > of those terrible Carter carburetors with a Nutter bypass performed.
> > Keep
> > > > in mind with this question that the catalytic converter needs to be
> > > replaced
> > > > and another one is on order. Here's the present trouble: The stepper
> > > motor,
> > > > which I believe controls the amount of fuel, has been disconnected
as
> > part
> > > > of the bypass. The gas to air ratio is too rich and there is really
no
> > way
> > > > to adjust it, or so I'm told. I'm not sure how much the catalytic
> > > converter
> > > > has to do with this but, how can the fuel mixture be adjusted with
the
> > > > bypass in place?
> > > >
> > > >
> > > >
> > > > Thanks,
> > > >
> > > > Chip
> > > >
> > > >
> > > >
> > > >
> > > >
> > > >
> > >
> > >

 

Dad took the motor off and put a plate over the port in place of the gasket.
We now suspect that it's not the source of the problem. The engine is just
getting too much fuel. It will run but, it floods easily, and when ever it
warms up, the fuel smell is very strong. To start it when it's warm, you
almost have to treat it like a flooded engine just to get it going.

I told dad the there are a vast number of people on the newsgroups and
someone will be able to diagnose the problem with us. Thanks to Mike, Bill
and Serg for their help so far.

I believe that he is going to get a rebuild kit for the carb and go from
there, but I will tell him about the mix screw location.

Thanks Again,

Chip


"Mike Romain" <romainm@sympatico.ca> wrote in message
news:40A24910.4395B719@sympatico.ca...
> Ok, you have the YFA carb.
>
> The fact that it runs pretty decent with the stepper unplugged would
> lead me to believe the mix is at least 'close' by default.
>
> The YFA with the stepper still has the manual mix screw, same as the
> BBD. They hide it under a metal plug in the base plate of the carb.
> Some you can pull the blocking plug out with a point, others have to be
> drilled and pried out.
>
> If you set the carb with the throttle lever in front of you, the mix
> screw will be in the base to your right under the plug likely.
>
> I would highly recommend you get the Haynes CJ manual. It has a great
> section on the carbs.
>
> Mike
> 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> 88 Cherokee 235 BFG AT's
>
> Chip wrote:
> >
> > The computer was not functioning so the stepper motor was inoperable (or
at
> > least was not being run by the bad computer) Before the bypass was
> > complete, my father started the motor, it ran terrible until he uplugged
the
> > stepper motor, then it ran smooth. How can you tell where the stepper
motor
> > should be and how do you get it there if it is in the wrong place, which
it
> > obviously is because of the amount of gas running through it.
> >
> > Short of solving this carb trouble, what kind of pre-83 carb will fit
the
> > 150 engine?
> >
> > Thanks again,
> >
> > Chip
> >
> > "serg" <sfonNOSPAM@yahoo.com> wrote in message
> > news:2gad30Fiu7bU1@uni-berlin.de...
> > > did u make sure the stepper motor was in the right position before
turning
> > > it off? i never did the nutter bypass in mine before i took it off but
i
> > > remember you had to have the motor in a certain position before
cutting
> > the
> > > wire. is your 02 sensor alive?
> > >
> > > "Chip" <cjenkins1@nospam.neo.rr.com> wrote in message
> > > news:oRSnc.1090$OE3.804@fe1.columbus.rr.com...
> > > > I have a question concerning an '84 CJ with the AMC 150 4 cyl engine
and
> > > one
> > > > of those terrible Carter carburetors with a Nutter bypass performed.
> > Keep
> > > > in mind with this question that the catalytic converter needs to be
> > > replaced
> > > > and another one is on order. Here's the present trouble: The stepper
> > > motor,
> > > > which I believe controls the amount of fuel, has been disconnected
as
> > part
> > > > of the bypass. The gas to air ratio is too rich and there is really
no
> > way
> > > > to adjust it, or so I'm told. I'm not sure how much the catalytic
> > > converter
> > > > has to do with this but, how can the fuel mixture be adjusted with
the
> > > > bypass in place?
> > > >
> > > >
> > > >
> > > > Thanks,
> > > >
> > > > Chip
> > > >
> > > >
> > > >
> > > >
> > > >
> > > >
> > >
> > >

 

Dad took the motor off and put a plate over the port in place of the gasket.
We now suspect that it's not the source of the problem. The engine is just
getting too much fuel. It will run but, it floods easily, and when ever it
warms up, the fuel smell is very strong. To start it when it's warm, you
almost have to treat it like a flooded engine just to get it going.

I told dad the there are a vast number of people on the newsgroups and
someone will be able to diagnose the problem with us. Thanks to Mike, Bill
and Serg for their help so far.

I believe that he is going to get a rebuild kit for the carb and go from
there, but I will tell him about the mix screw location.

Thanks Again,

Chip


"Mike Romain" <romainm@sympatico.ca> wrote in message
news:40A24910.4395B719@sympatico.ca...
> Ok, you have the YFA carb.
>
> The fact that it runs pretty decent with the stepper unplugged would
> lead me to believe the mix is at least 'close' by default.
>
> The YFA with the stepper still has the manual mix screw, same as the
> BBD. They hide it under a metal plug in the base plate of the carb.
> Some you can pull the blocking plug out with a point, others have to be
> drilled and pried out.
>
> If you set the carb with the throttle lever in front of you, the mix
> screw will be in the base to your right under the plug likely.
>
> I would highly recommend you get the Haynes CJ manual. It has a great
> section on the carbs.
>
> Mike
> 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> 88 Cherokee 235 BFG AT's
>
> Chip wrote:
> >
> > The computer was not functioning so the stepper motor was inoperable (or
at
> > least was not being run by the bad computer) Before the bypass was
> > complete, my father started the motor, it ran terrible until he uplugged
the
> > stepper motor, then it ran smooth. How can you tell where the stepper
motor
> > should be and how do you get it there if it is in the wrong place, which
it
> > obviously is because of the amount of gas running through it.
> >
> > Short of solving this carb trouble, what kind of pre-83 carb will fit
the
> > 150 engine?
> >
> > Thanks again,
> >
> > Chip
> >
> > "serg" <sfonNOSPAM@yahoo.com> wrote in message
> > news:2gad30Fiu7bU1@uni-berlin.de...
> > > did u make sure the stepper motor was in the right position before
turning
> > > it off? i never did the nutter bypass in mine before i took it off but
i
> > > remember you had to have the motor in a certain position before
cutting
> > the
> > > wire. is your 02 sensor alive?
> > >
> > > "Chip" <cjenkins1@nospam.neo.rr.com> wrote in message
> > > news:oRSnc.1090$OE3.804@fe1.columbus.rr.com...
> > > > I have a question concerning an '84 CJ with the AMC 150 4 cyl engine
and
> > > one
> > > > of those terrible Carter carburetors with a Nutter bypass performed.
> > Keep
> > > > in mind with this question that the catalytic converter needs to be
> > > replaced
> > > > and another one is on order. Here's the present trouble: The stepper
> > > motor,
> > > > which I believe controls the amount of fuel, has been disconnected
as
> > part
> > > > of the bypass. The gas to air ratio is too rich and there is really
no
> > way
> > > > to adjust it, or so I'm told. I'm not sure how much the catalytic
> > > converter
> > > > has to do with this but, how can the fuel mixture be adjusted with
the
> > > > bypass in place?
> > > >
> > > >
> > > >
> > > > Thanks,
> > > >
> > > > Chip
> > > >
> > > >
> > > >
> > > >
> > > >
> > > >
> > >
> > >

 

Dad took the motor off and put a plate over the port in place of the gasket.
We now suspect that it's not the source of the problem. The engine is just
getting too much fuel. It will run but, it floods easily, and when ever it
warms up, the fuel smell is very strong. To start it when it's warm, you
almost have to treat it like a flooded engine just to get it going.

I told dad the there are a vast number of people on the newsgroups and
someone will be able to diagnose the problem with us. Thanks to Mike, Bill
and Serg for their help so far.

I believe that he is going to get a rebuild kit for the carb and go from
there, but I will tell him about the mix screw location.

Thanks Again,

Chip


"Mike Romain" <romainm@sympatico.ca> wrote in message
news:40A24910.4395B719@sympatico.ca...
> Ok, you have the YFA carb.
>
> The fact that it runs pretty decent with the stepper unplugged would
> lead me to believe the mix is at least 'close' by default.
>
> The YFA with the stepper still has the manual mix screw, same as the
> BBD. They hide it under a metal plug in the base plate of the carb.
> Some you can pull the blocking plug out with a point, others have to be
> drilled and pried out.
>
> If you set the carb with the throttle lever in front of you, the mix
> screw will be in the base to your right under the plug likely.
>
> I would highly recommend you get the Haynes CJ manual. It has a great
> section on the carbs.
>
> Mike
> 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> 88 Cherokee 235 BFG AT's
>
> Chip wrote:
> >
> > The computer was not functioning so the stepper motor was inoperable (or
at
> > least was not being run by the bad computer) Before the bypass was
> > complete, my father started the motor, it ran terrible until he uplugged
the
> > stepper motor, then it ran smooth. How can you tell where the stepper
motor
> > should be and how do you get it there if it is in the wrong place, which
it
> > obviously is because of the amount of gas running through it.
> >
> > Short of solving this carb trouble, what kind of pre-83 carb will fit
the
> > 150 engine?
> >
> > Thanks again,
> >
> > Chip
> >
> > "serg" <sfonNOSPAM@yahoo.com> wrote in message
> > news:2gad30Fiu7bU1@uni-berlin.de...
> > > did u make sure the stepper motor was in the right position before
turning
> > > it off? i never did the nutter bypass in mine before i took it off but
i
> > > remember you had to have the motor in a certain position before
cutting
> > the
> > > wire. is your 02 sensor alive?
> > >
> > > "Chip" <cjenkins1@nospam.neo.rr.com> wrote in message
> > > news:oRSnc.1090$OE3.804@fe1.columbus.rr.com...
> > > > I have a question concerning an '84 CJ with the AMC 150 4 cyl engine
and
> > > one
> > > > of those terrible Carter carburetors with a Nutter bypass performed.
> > Keep
> > > > in mind with this question that the catalytic converter needs to be
> > > replaced
> > > > and another one is on order. Here's the present trouble: The stepper
> > > motor,
> > > > which I believe controls the amount of fuel, has been disconnected
as
> > part
> > > > of the bypass. The gas to air ratio is too rich and there is really
no
> > way
> > > > to adjust it, or so I'm told. I'm not sure how much the catalytic
> > > converter
> > > > has to do with this but, how can the fuel mixture be adjusted with
the
> > > > bypass in place?
> > > >
> > > >
> > > >
> > > > Thanks,
> > > >
> > > > Chip
> > > >
> > > >
> > > >
> > > >
> > > >
> > > >
> > >
> > >