87 wrangler starting problem - HELP!
 

can one of you Jeep gurus help me out? i have been given a 1987 Jeep
Wrangler (4.2L 6cyl) and have been having trouble getting it to start
reliably.
when the vehicle is completely cold it starts right up no problem, it
will idle at approx 1000rpm and - while its still parked - can be
revved up with plenty of power. however, if i shut it off and then try
to restart it - no dice. motor turns over and spark is present but the
engine will not catch, no matter whether the accel pedal is left alone
or held down. this is true even when the motor has initially run for
even just a minute or so.
also when it is driven the idle cannot be allowed to dip below approx
1100 rpm or it will stall and not start again for some time (at least
30 minutes or so but i havent figured out exactly how much time is
required yet...). i have very little history on the vehicle, and aside
from the fact that its had this same problem now for about a year, i
dont know if this problem appeared suddenly or developed over time...
i have replaced the rotor, cap, plugs, plug-wires, and in-line fuel
filter. the air filter while not new appears servicable. i also added
some stabilizer to the fuel and put a few gallons of new premium in the
tank...
could the problem be in any way related to the brake booster? there are
signs of previous brake fluid leakage around the flange where the
master cyl bolts on (bubbled paint etc) but i dont see any actual
leakage now... perhaps this is why can idle and rev while parked but
cannot idle when driven?
but then why no restart when its just been sitting at the curb and the
engine is just a tiny bit 'warm'?
perhaps a more likely culprit is the choke circut? or the carburator
generally? the accelerator pump at least is working - strong jet of
fuel w/accel pedal pressed.
i dont know how to check the various different parts of the fuel
delivery system individually so i dont have any idea even where to
start - if i was to purchase a rebuilt BBD carb would this come with
all the various solenoids, stepper motors, choke assembly, diaphragms,
throttle switch. etc etc? probably not i would think... does this
matter?
whaddya think? i'm no mechanic but i'm not totally ignorant of
carburated engines either. can you point me in the right direction so i
can get my 'new' black beast running?

eagerly awaiting your diagnostic wisdom,
thanks in advance.
Bennett

Re: 87 wrangler starting problem - HELP!
 

Hi Bennett,
You need a choke pull-off, number forty at:
http://www.carburetorfactory.com/expvw03.html And you probably need a
kit for your carburetor, too. It's not that hard, easiest for me to take
it apart on a card table, with a towel ------ out on it to catch the
small ball bearing valves as the spring from the body.
God Bless America, Bill O|||||||O
mailto:-------------------- http://www.----------.com/

bennettvonbennett@gmail.com wrote:
>
> can one of you Jeep gurus help me out? i have been given a 1987 Jeep
> Wrangler (4.2L 6cyl) and have been having trouble getting it to start
> reliably.
> when the vehicle is completely cold it starts right up no problem, it
> will idle at approx 1000rpm and - while its still parked - can be
> revved up with plenty of power. however, if i shut it off and then try
> to restart it - no dice. motor turns over and spark is present but the
> engine will not catch, no matter whether the accel pedal is left alone
> or held down. this is true even when the motor has initially run for
> even just a minute or so.
> also when it is driven the idle cannot be allowed to dip below approx
> 1100 rpm or it will stall and not start again for some time (at least
> 30 minutes or so but i havent figured out exactly how much time is
> required yet...). i have very little history on the vehicle, and aside
> from the fact that its had this same problem now for about a year, i
> dont know if this problem appeared suddenly or developed over time...
> i have replaced the rotor, cap, plugs, plug-wires, and in-line fuel
> filter. the air filter while not new appears servicable. i also added
> some stabilizer to the fuel and put a few gallons of new premium in the
> tank...
> could the problem be in any way related to the brake booster? there are
> signs of previous brake fluid leakage around the flange where the
> master cyl bolts on (bubbled paint etc) but i dont see any actual
> leakage now... perhaps this is why can idle and rev while parked but
> cannot idle when driven?
> but then why no restart when its just been sitting at the curb and the
> engine is just a tiny bit 'warm'?
> perhaps a more likely culprit is the choke circut? or the carburator
> generally? the accelerator pump at least is working - strong jet of
> fuel w/accel pedal pressed.
> i dont know how to check the various different parts of the fuel
> delivery system individually so i dont have any idea even where to
> start - if i was to purchase a rebuilt BBD carb would this come with
> all the various solenoids, stepper motors, choke assembly, diaphragms,
> throttle switch. etc etc? probably not i would think... does this
> matter?
> whaddya think? i'm no mechanic but i'm not totally ignorant of
> carburated engines either. can you point me in the right direction so i
> can get my 'new' black beast running?
>
> eagerly awaiting your diagnostic wisdom,
> thanks in advance.
> Bennett

Re: 87 wrangler starting problem - HELP!
 

Hi Bennett,
You need a choke pull-off, number forty at:
http://www.carburetorfactory.com/expvw03.html And you probably need a
kit for your carburetor, too. It's not that hard, easiest for me to take
it apart on a card table, with a towel ------ out on it to catch the
small ball bearing valves as the spring from the body.
God Bless America, Bill O|||||||O
mailto:-------------------- http://www.----------.com/

bennettvonbennett@gmail.com wrote:
>
> can one of you Jeep gurus help me out? i have been given a 1987 Jeep
> Wrangler (4.2L 6cyl) and have been having trouble getting it to start
> reliably.
> when the vehicle is completely cold it starts right up no problem, it
> will idle at approx 1000rpm and - while its still parked - can be
> revved up with plenty of power. however, if i shut it off and then try
> to restart it - no dice. motor turns over and spark is present but the
> engine will not catch, no matter whether the accel pedal is left alone
> or held down. this is true even when the motor has initially run for
> even just a minute or so.
> also when it is driven the idle cannot be allowed to dip below approx
> 1100 rpm or it will stall and not start again for some time (at least
> 30 minutes or so but i havent figured out exactly how much time is
> required yet...). i have very little history on the vehicle, and aside
> from the fact that its had this same problem now for about a year, i
> dont know if this problem appeared suddenly or developed over time...
> i have replaced the rotor, cap, plugs, plug-wires, and in-line fuel
> filter. the air filter while not new appears servicable. i also added
> some stabilizer to the fuel and put a few gallons of new premium in the
> tank...
> could the problem be in any way related to the brake booster? there are
> signs of previous brake fluid leakage around the flange where the
> master cyl bolts on (bubbled paint etc) but i dont see any actual
> leakage now... perhaps this is why can idle and rev while parked but
> cannot idle when driven?
> but then why no restart when its just been sitting at the curb and the
> engine is just a tiny bit 'warm'?
> perhaps a more likely culprit is the choke circut? or the carburator
> generally? the accelerator pump at least is working - strong jet of
> fuel w/accel pedal pressed.
> i dont know how to check the various different parts of the fuel
> delivery system individually so i dont have any idea even where to
> start - if i was to purchase a rebuilt BBD carb would this come with
> all the various solenoids, stepper motors, choke assembly, diaphragms,
> throttle switch. etc etc? probably not i would think... does this
> matter?
> whaddya think? i'm no mechanic but i'm not totally ignorant of
> carburated engines either. can you point me in the right direction so i
> can get my 'new' black beast running?
>
> eagerly awaiting your diagnostic wisdom,
> thanks in advance.
> Bennett

Re: 87 wrangler starting problem - HELP!
 

Hi Bennett,
You need a choke pull-off, number forty at:
http://www.carburetorfactory.com/expvw03.html And you probably need a
kit for your carburetor, too. It's not that hard, easiest for me to take
it apart on a card table, with a towel ------ out on it to catch the
small ball bearing valves as the spring from the body.
God Bless America, Bill O|||||||O
mailto:-------------------- http://www.----------.com/

bennettvonbennett@gmail.com wrote:
>
> can one of you Jeep gurus help me out? i have been given a 1987 Jeep
> Wrangler (4.2L 6cyl) and have been having trouble getting it to start
> reliably.
> when the vehicle is completely cold it starts right up no problem, it
> will idle at approx 1000rpm and - while its still parked - can be
> revved up with plenty of power. however, if i shut it off and then try
> to restart it - no dice. motor turns over and spark is present but the
> engine will not catch, no matter whether the accel pedal is left alone
> or held down. this is true even when the motor has initially run for
> even just a minute or so.
> also when it is driven the idle cannot be allowed to dip below approx
> 1100 rpm or it will stall and not start again for some time (at least
> 30 minutes or so but i havent figured out exactly how much time is
> required yet...). i have very little history on the vehicle, and aside
> from the fact that its had this same problem now for about a year, i
> dont know if this problem appeared suddenly or developed over time...
> i have replaced the rotor, cap, plugs, plug-wires, and in-line fuel
> filter. the air filter while not new appears servicable. i also added
> some stabilizer to the fuel and put a few gallons of new premium in the
> tank...
> could the problem be in any way related to the brake booster? there are
> signs of previous brake fluid leakage around the flange where the
> master cyl bolts on (bubbled paint etc) but i dont see any actual
> leakage now... perhaps this is why can idle and rev while parked but
> cannot idle when driven?
> but then why no restart when its just been sitting at the curb and the
> engine is just a tiny bit 'warm'?
> perhaps a more likely culprit is the choke circut? or the carburator
> generally? the accelerator pump at least is working - strong jet of
> fuel w/accel pedal pressed.
> i dont know how to check the various different parts of the fuel
> delivery system individually so i dont have any idea even where to
> start - if i was to purchase a rebuilt BBD carb would this come with
> all the various solenoids, stepper motors, choke assembly, diaphragms,
> throttle switch. etc etc? probably not i would think... does this
> matter?
> whaddya think? i'm no mechanic but i'm not totally ignorant of
> carburated engines either. can you point me in the right direction so i
> can get my 'new' black beast running?
>
> eagerly awaiting your diagnostic wisdom,
> thanks in advance.
> Bennett

Re: 87 wrangler starting problem - HELP!
 

thanks bill - i'll try the choke pull-off!

i have a slight problem with a lack of avail. workspace - nowhere to
soak parts, no compressor to blow out ports, etc - also this sucker is
soon to be my only vehicle so time is of the essence - all that said:
d'ya think its better to attempt to rebuild the carb myself or to by a
rebuilt one from NAPA or wherever..
..
also any good links for getting rid of this Carter and switching to a
Weber? i've seen this mentioned and am curious....

thanks and i'll post and mention whether the choke pull-off replacement
has any effect...
bennett

Re: 87 wrangler starting problem - HELP!
 

thanks bill - i'll try the choke pull-off!

i have a slight problem with a lack of avail. workspace - nowhere to
soak parts, no compressor to blow out ports, etc - also this sucker is
soon to be my only vehicle so time is of the essence - all that said:
d'ya think its better to attempt to rebuild the carb myself or to by a
rebuilt one from NAPA or wherever..
..
also any good links for getting rid of this Carter and switching to a
Weber? i've seen this mentioned and am curious....

thanks and i'll post and mention whether the choke pull-off replacement
has any effect...
bennett

Re: 87 wrangler starting problem - HELP!
 

thanks bill - i'll try the choke pull-off!

i have a slight problem with a lack of avail. workspace - nowhere to
soak parts, no compressor to blow out ports, etc - also this sucker is
soon to be my only vehicle so time is of the essence - all that said:
d'ya think its better to attempt to rebuild the carb myself or to by a
rebuilt one from NAPA or wherever..
..
also any good links for getting rid of this Carter and switching to a
Weber? i've seen this mentioned and am curious....

thanks and i'll post and mention whether the choke pull-off replacement
has any effect...
bennett

Re: 87 wrangler starting problem - HELP!
 

That's what the dinning room table is for. For one carburetor in
this injection time period, it's not worth buy the parts dip, just a can
of Berryman's B-12 carburetor cleaner is sufficient:
http://www.berrymanproducts.com/Default.aspx?tabid=125 Each kit comes
with an explode view, measurements and gauges:
http://www.----------.com/holley.jpg
God Bless America, Bill O|||||||O
mailto:--------------------

bobvonbob wrote:
>
> thanks bill - i'll try the choke pull-off!
>
> i have a slight problem with a lack of avail. workspace - nowhere to
> soak parts, no compressor to blow out ports, etc - also this sucker is
> soon to be my only vehicle so time is of the essence - all that said:
> d'ya think its better to attempt to rebuild the carb myself or to by a
> rebuilt one from NAPA or wherever..
> .
> also any good links for getting rid of this Carter and switching to a
> Weber? i've seen this mentioned and am curious....
>
> thanks and i'll post and mention whether the choke pull-off replacement
> has any effect...
> bennett

Re: 87 wrangler starting problem - HELP!
 

That's what the dinning room table is for. For one carburetor in
this injection time period, it's not worth buy the parts dip, just a can
of Berryman's B-12 carburetor cleaner is sufficient:
http://www.berrymanproducts.com/Default.aspx?tabid=125 Each kit comes
with an explode view, measurements and gauges:
http://www.----------.com/holley.jpg
God Bless America, Bill O|||||||O
mailto:--------------------

bobvonbob wrote:
>
> thanks bill - i'll try the choke pull-off!
>
> i have a slight problem with a lack of avail. workspace - nowhere to
> soak parts, no compressor to blow out ports, etc - also this sucker is
> soon to be my only vehicle so time is of the essence - all that said:
> d'ya think its better to attempt to rebuild the carb myself or to by a
> rebuilt one from NAPA or wherever..
> .
> also any good links for getting rid of this Carter and switching to a
> Weber? i've seen this mentioned and am curious....
>
> thanks and i'll post and mention whether the choke pull-off replacement
> has any effect...
> bennett

Re: 87 wrangler starting problem - HELP!
 

That's what the dinning room table is for. For one carburetor in
this injection time period, it's not worth buy the parts dip, just a can
of Berryman's B-12 carburetor cleaner is sufficient:
http://www.berrymanproducts.com/Default.aspx?tabid=125 Each kit comes
with an explode view, measurements and gauges:
http://www.----------.com/holley.jpg
God Bless America, Bill O|||||||O
mailto:--------------------

bobvonbob wrote:
>
> thanks bill - i'll try the choke pull-off!
>
> i have a slight problem with a lack of avail. workspace - nowhere to
> soak parts, no compressor to blow out ports, etc - also this sucker is
> soon to be my only vehicle so time is of the essence - all that said:
> d'ya think its better to attempt to rebuild the carb myself or to by a
> rebuilt one from NAPA or wherever..
> .
> also any good links for getting rid of this Carter and switching to a
> Weber? i've seen this mentioned and am curious....
>
> thanks and i'll post and mention whether the choke pull-off replacement
> has any effect...
> bennett