Black smoke at startup
01-26-2006, 09:36 AM
#11
Guest
Posts: n/a
Re: Black smoke at startup
I had a similar situation once. Black smoke, ran rough when started
cold. Error Code was for an O2 sensor. I pulled the aircleaner and very
very slowly poured Berryman B12 down the carb while hand-reving the
accelerator to keep it running. Ran through the entire can. This cleaned
off my O2 sensor and sprayed more black crap all over the driveway than
you've ever seen. After the can was empty and the remaining B12 was
burned, the motor ran like a top for years after. Never did replace that
O2 sensor.
__________________________________________________ ___________________
2003 TJ Rubicon * 2001 XJ Sport * 1971 Bill Stroppe Baja Bronco
"There is a very fine line between 'hobby' and 'mental illness'."
Pronunciation: 'jEp Function: noun Date: 1940
Etymology: from g. p. (G= 'Government' P= '80 inch wheelbase')
A small general-purpose motor vehicle with 80" wheelbase, 1/4-ton
capacity and four-wheel drive used by the U.S. army in World War II.
__________________________________________________ ___________________
wbowlin@gmail.com wrote:
> My 88 Jeep Wrangler sometimes blows black smoke when started. The
> smoke leaves a wet mark on the driveway that looks like someone took a
> spray can and lightly sprayed the area under the tailpipe. The smoke
> usually disipates rather qickly. From what I have researched, it is
> the fuel running too rich. Does this sound right on? Also, my gas
> mileage in the jeep is not the greatest (to be expected). Could the
> mixture have an adverse effect on the mpg as well?
>
> As always, thanks to this group for the help....
>
cold. Error Code was for an O2 sensor. I pulled the aircleaner and very
very slowly poured Berryman B12 down the carb while hand-reving the
accelerator to keep it running. Ran through the entire can. This cleaned
off my O2 sensor and sprayed more black crap all over the driveway than
you've ever seen. After the can was empty and the remaining B12 was
burned, the motor ran like a top for years after. Never did replace that
O2 sensor.
__________________________________________________ ___________________
2003 TJ Rubicon * 2001 XJ Sport * 1971 Bill Stroppe Baja Bronco
"There is a very fine line between 'hobby' and 'mental illness'."
Pronunciation: 'jEp Function: noun Date: 1940
Etymology: from g. p. (G= 'Government' P= '80 inch wheelbase')
A small general-purpose motor vehicle with 80" wheelbase, 1/4-ton
capacity and four-wheel drive used by the U.S. army in World War II.
__________________________________________________ ___________________
wbowlin@gmail.com wrote:
> My 88 Jeep Wrangler sometimes blows black smoke when started. The
> smoke leaves a wet mark on the driveway that looks like someone took a
> spray can and lightly sprayed the area under the tailpipe. The smoke
> usually disipates rather qickly. From what I have researched, it is
> the fuel running too rich. Does this sound right on? Also, my gas
> mileage in the jeep is not the greatest (to be expected). Could the
> mixture have an adverse effect on the mpg as well?
>
> As always, thanks to this group for the help....
>
01-26-2006, 09:36 AM
#12
Guest
Posts: n/a
Re: Black smoke at startup
I had a similar situation once. Black smoke, ran rough when started
cold. Error Code was for an O2 sensor. I pulled the aircleaner and very
very slowly poured Berryman B12 down the carb while hand-reving the
accelerator to keep it running. Ran through the entire can. This cleaned
off my O2 sensor and sprayed more black crap all over the driveway than
you've ever seen. After the can was empty and the remaining B12 was
burned, the motor ran like a top for years after. Never did replace that
O2 sensor.
__________________________________________________ ___________________
2003 TJ Rubicon * 2001 XJ Sport * 1971 Bill Stroppe Baja Bronco
"There is a very fine line between 'hobby' and 'mental illness'."
Pronunciation: 'jEp Function: noun Date: 1940
Etymology: from g. p. (G= 'Government' P= '80 inch wheelbase')
A small general-purpose motor vehicle with 80" wheelbase, 1/4-ton
capacity and four-wheel drive used by the U.S. army in World War II.
__________________________________________________ ___________________
wbowlin@gmail.com wrote:
> My 88 Jeep Wrangler sometimes blows black smoke when started. The
> smoke leaves a wet mark on the driveway that looks like someone took a
> spray can and lightly sprayed the area under the tailpipe. The smoke
> usually disipates rather qickly. From what I have researched, it is
> the fuel running too rich. Does this sound right on? Also, my gas
> mileage in the jeep is not the greatest (to be expected). Could the
> mixture have an adverse effect on the mpg as well?
>
> As always, thanks to this group for the help....
>
cold. Error Code was for an O2 sensor. I pulled the aircleaner and very
very slowly poured Berryman B12 down the carb while hand-reving the
accelerator to keep it running. Ran through the entire can. This cleaned
off my O2 sensor and sprayed more black crap all over the driveway than
you've ever seen. After the can was empty and the remaining B12 was
burned, the motor ran like a top for years after. Never did replace that
O2 sensor.
__________________________________________________ ___________________
2003 TJ Rubicon * 2001 XJ Sport * 1971 Bill Stroppe Baja Bronco
"There is a very fine line between 'hobby' and 'mental illness'."
Pronunciation: 'jEp Function: noun Date: 1940
Etymology: from g. p. (G= 'Government' P= '80 inch wheelbase')
A small general-purpose motor vehicle with 80" wheelbase, 1/4-ton
capacity and four-wheel drive used by the U.S. army in World War II.
__________________________________________________ ___________________
wbowlin@gmail.com wrote:
> My 88 Jeep Wrangler sometimes blows black smoke when started. The
> smoke leaves a wet mark on the driveway that looks like someone took a
> spray can and lightly sprayed the area under the tailpipe. The smoke
> usually disipates rather qickly. From what I have researched, it is
> the fuel running too rich. Does this sound right on? Also, my gas
> mileage in the jeep is not the greatest (to be expected). Could the
> mixture have an adverse effect on the mpg as well?
>
> As always, thanks to this group for the help....
>
01-26-2006, 09:36 AM
#13
Guest
Posts: n/a
Re: Black smoke at startup
I had a similar situation once. Black smoke, ran rough when started
cold. Error Code was for an O2 sensor. I pulled the aircleaner and very
very slowly poured Berryman B12 down the carb while hand-reving the
accelerator to keep it running. Ran through the entire can. This cleaned
off my O2 sensor and sprayed more black crap all over the driveway than
you've ever seen. After the can was empty and the remaining B12 was
burned, the motor ran like a top for years after. Never did replace that
O2 sensor.
__________________________________________________ ___________________
2003 TJ Rubicon * 2001 XJ Sport * 1971 Bill Stroppe Baja Bronco
"There is a very fine line between 'hobby' and 'mental illness'."
Pronunciation: 'jEp Function: noun Date: 1940
Etymology: from g. p. (G= 'Government' P= '80 inch wheelbase')
A small general-purpose motor vehicle with 80" wheelbase, 1/4-ton
capacity and four-wheel drive used by the U.S. army in World War II.
__________________________________________________ ___________________
wbowlin@gmail.com wrote:
> My 88 Jeep Wrangler sometimes blows black smoke when started. The
> smoke leaves a wet mark on the driveway that looks like someone took a
> spray can and lightly sprayed the area under the tailpipe. The smoke
> usually disipates rather qickly. From what I have researched, it is
> the fuel running too rich. Does this sound right on? Also, my gas
> mileage in the jeep is not the greatest (to be expected). Could the
> mixture have an adverse effect on the mpg as well?
>
> As always, thanks to this group for the help....
>
cold. Error Code was for an O2 sensor. I pulled the aircleaner and very
very slowly poured Berryman B12 down the carb while hand-reving the
accelerator to keep it running. Ran through the entire can. This cleaned
off my O2 sensor and sprayed more black crap all over the driveway than
you've ever seen. After the can was empty and the remaining B12 was
burned, the motor ran like a top for years after. Never did replace that
O2 sensor.
__________________________________________________ ___________________
2003 TJ Rubicon * 2001 XJ Sport * 1971 Bill Stroppe Baja Bronco
"There is a very fine line between 'hobby' and 'mental illness'."
Pronunciation: 'jEp Function: noun Date: 1940
Etymology: from g. p. (G= 'Government' P= '80 inch wheelbase')
A small general-purpose motor vehicle with 80" wheelbase, 1/4-ton
capacity and four-wheel drive used by the U.S. army in World War II.
__________________________________________________ ___________________
wbowlin@gmail.com wrote:
> My 88 Jeep Wrangler sometimes blows black smoke when started. The
> smoke leaves a wet mark on the driveway that looks like someone took a
> spray can and lightly sprayed the area under the tailpipe. The smoke
> usually disipates rather qickly. From what I have researched, it is
> the fuel running too rich. Does this sound right on? Also, my gas
> mileage in the jeep is not the greatest (to be expected). Could the
> mixture have an adverse effect on the mpg as well?
>
> As always, thanks to this group for the help....
>
01-26-2006, 09:36 AM
#14
Guest
Posts: n/a
Re: Black smoke at startup
That sounds like a properly working electric choke.
It is adjustable, however if you tune it so the black smoke isn't as
bad, then it will be a pig to start driving when cold. They are a pig
cold anyway which is why I prefer a manual choke.
The electric choke operates on a timer that has no bearing on how warm
or cold the engine actually is so up here in Canada they go off way too
quick and you have to either 3 foot drive to avoid a cold stall or wait
a long time for it to actually warm up.
To see if it is adjusted properly, you can warm up the engine and open
the air filter carefully with it still running. If properly adjusted,
the choke plate will be wide open. If not there is a black cap with 3
hard to get at screws on it that adjusts.
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)
wbowlin@gmail.com wrote:
>
> My 88 Jeep Wrangler sometimes blows black smoke when started. The
> smoke leaves a wet mark on the driveway that looks like someone took a
> spray can and lightly sprayed the area under the tailpipe. The smoke
> usually disipates rather qickly. From what I have researched, it is
> the fuel running too rich. Does this sound right on? Also, my gas
> mileage in the jeep is not the greatest (to be expected). Could the
> mixture have an adverse effect on the mpg as well?
>
> As always, thanks to this group for the help....
It is adjustable, however if you tune it so the black smoke isn't as
bad, then it will be a pig to start driving when cold. They are a pig
cold anyway which is why I prefer a manual choke.
The electric choke operates on a timer that has no bearing on how warm
or cold the engine actually is so up here in Canada they go off way too
quick and you have to either 3 foot drive to avoid a cold stall or wait
a long time for it to actually warm up.
To see if it is adjusted properly, you can warm up the engine and open
the air filter carefully with it still running. If properly adjusted,
the choke plate will be wide open. If not there is a black cap with 3
hard to get at screws on it that adjusts.
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)
wbowlin@gmail.com wrote:
>
> My 88 Jeep Wrangler sometimes blows black smoke when started. The
> smoke leaves a wet mark on the driveway that looks like someone took a
> spray can and lightly sprayed the area under the tailpipe. The smoke
> usually disipates rather qickly. From what I have researched, it is
> the fuel running too rich. Does this sound right on? Also, my gas
> mileage in the jeep is not the greatest (to be expected). Could the
> mixture have an adverse effect on the mpg as well?
>
> As always, thanks to this group for the help....
01-26-2006, 09:36 AM
#15
Guest
Posts: n/a
Re: Black smoke at startup
That sounds like a properly working electric choke.
It is adjustable, however if you tune it so the black smoke isn't as
bad, then it will be a pig to start driving when cold. They are a pig
cold anyway which is why I prefer a manual choke.
The electric choke operates on a timer that has no bearing on how warm
or cold the engine actually is so up here in Canada they go off way too
quick and you have to either 3 foot drive to avoid a cold stall or wait
a long time for it to actually warm up.
To see if it is adjusted properly, you can warm up the engine and open
the air filter carefully with it still running. If properly adjusted,
the choke plate will be wide open. If not there is a black cap with 3
hard to get at screws on it that adjusts.
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)
wbowlin@gmail.com wrote:
>
> My 88 Jeep Wrangler sometimes blows black smoke when started. The
> smoke leaves a wet mark on the driveway that looks like someone took a
> spray can and lightly sprayed the area under the tailpipe. The smoke
> usually disipates rather qickly. From what I have researched, it is
> the fuel running too rich. Does this sound right on? Also, my gas
> mileage in the jeep is not the greatest (to be expected). Could the
> mixture have an adverse effect on the mpg as well?
>
> As always, thanks to this group for the help....
It is adjustable, however if you tune it so the black smoke isn't as
bad, then it will be a pig to start driving when cold. They are a pig
cold anyway which is why I prefer a manual choke.
The electric choke operates on a timer that has no bearing on how warm
or cold the engine actually is so up here in Canada they go off way too
quick and you have to either 3 foot drive to avoid a cold stall or wait
a long time for it to actually warm up.
To see if it is adjusted properly, you can warm up the engine and open
the air filter carefully with it still running. If properly adjusted,
the choke plate will be wide open. If not there is a black cap with 3
hard to get at screws on it that adjusts.
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)
wbowlin@gmail.com wrote:
>
> My 88 Jeep Wrangler sometimes blows black smoke when started. The
> smoke leaves a wet mark on the driveway that looks like someone took a
> spray can and lightly sprayed the area under the tailpipe. The smoke
> usually disipates rather qickly. From what I have researched, it is
> the fuel running too rich. Does this sound right on? Also, my gas
> mileage in the jeep is not the greatest (to be expected). Could the
> mixture have an adverse effect on the mpg as well?
>
> As always, thanks to this group for the help....
01-26-2006, 09:36 AM
#16
Guest
Posts: n/a
Re: Black smoke at startup
That sounds like a properly working electric choke.
It is adjustable, however if you tune it so the black smoke isn't as
bad, then it will be a pig to start driving when cold. They are a pig
cold anyway which is why I prefer a manual choke.
The electric choke operates on a timer that has no bearing on how warm
or cold the engine actually is so up here in Canada they go off way too
quick and you have to either 3 foot drive to avoid a cold stall or wait
a long time for it to actually warm up.
To see if it is adjusted properly, you can warm up the engine and open
the air filter carefully with it still running. If properly adjusted,
the choke plate will be wide open. If not there is a black cap with 3
hard to get at screws on it that adjusts.
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)
wbowlin@gmail.com wrote:
>
> My 88 Jeep Wrangler sometimes blows black smoke when started. The
> smoke leaves a wet mark on the driveway that looks like someone took a
> spray can and lightly sprayed the area under the tailpipe. The smoke
> usually disipates rather qickly. From what I have researched, it is
> the fuel running too rich. Does this sound right on? Also, my gas
> mileage in the jeep is not the greatest (to be expected). Could the
> mixture have an adverse effect on the mpg as well?
>
> As always, thanks to this group for the help....
It is adjustable, however if you tune it so the black smoke isn't as
bad, then it will be a pig to start driving when cold. They are a pig
cold anyway which is why I prefer a manual choke.
The electric choke operates on a timer that has no bearing on how warm
or cold the engine actually is so up here in Canada they go off way too
quick and you have to either 3 foot drive to avoid a cold stall or wait
a long time for it to actually warm up.
To see if it is adjusted properly, you can warm up the engine and open
the air filter carefully with it still running. If properly adjusted,
the choke plate will be wide open. If not there is a black cap with 3
hard to get at screws on it that adjusts.
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)
wbowlin@gmail.com wrote:
>
> My 88 Jeep Wrangler sometimes blows black smoke when started. The
> smoke leaves a wet mark on the driveway that looks like someone took a
> spray can and lightly sprayed the area under the tailpipe. The smoke
> usually disipates rather qickly. From what I have researched, it is
> the fuel running too rich. Does this sound right on? Also, my gas
> mileage in the jeep is not the greatest (to be expected). Could the
> mixture have an adverse effect on the mpg as well?
>
> As always, thanks to this group for the help....
01-26-2006, 05:47 PM
#17
Guest
Posts: n/a
Re: Black smoke at startup
Some of this will be normal cold mourning choke compensation. But
If you're worried about it at all have the carburetor rebuilt and
replace the choke pull off diaphragm, both go bad about every ten years:
http://www.carburetorfactory.com/expvw03.html
God Bless America, Bill O|||||||O
mailto:-------------------- http://www.----------.com/
wbowlin@gmail.com wrote:
>
> My 88 Jeep Wrangler sometimes blows black smoke when started. The
> smoke leaves a wet mark on the driveway that looks like someone took a
> spray can and lightly sprayed the area under the tailpipe. The smoke
> usually disipates rather qickly. From what I have researched, it is
> the fuel running too rich. Does this sound right on? Also, my gas
> mileage in the jeep is not the greatest (to be expected). Could the
> mixture have an adverse effect on the mpg as well?
>
> As always, thanks to this group for the help....
If you're worried about it at all have the carburetor rebuilt and
replace the choke pull off diaphragm, both go bad about every ten years:
http://www.carburetorfactory.com/expvw03.html
God Bless America, Bill O|||||||O
mailto:-------------------- http://www.----------.com/
wbowlin@gmail.com wrote:
>
> My 88 Jeep Wrangler sometimes blows black smoke when started. The
> smoke leaves a wet mark on the driveway that looks like someone took a
> spray can and lightly sprayed the area under the tailpipe. The smoke
> usually disipates rather qickly. From what I have researched, it is
> the fuel running too rich. Does this sound right on? Also, my gas
> mileage in the jeep is not the greatest (to be expected). Could the
> mixture have an adverse effect on the mpg as well?
>
> As always, thanks to this group for the help....
01-26-2006, 05:47 PM
#18
Guest
Posts: n/a
Re: Black smoke at startup
Some of this will be normal cold mourning choke compensation. But
If you're worried about it at all have the carburetor rebuilt and
replace the choke pull off diaphragm, both go bad about every ten years:
http://www.carburetorfactory.com/expvw03.html
God Bless America, Bill O|||||||O
mailto:-------------------- http://www.----------.com/
wbowlin@gmail.com wrote:
>
> My 88 Jeep Wrangler sometimes blows black smoke when started. The
> smoke leaves a wet mark on the driveway that looks like someone took a
> spray can and lightly sprayed the area under the tailpipe. The smoke
> usually disipates rather qickly. From what I have researched, it is
> the fuel running too rich. Does this sound right on? Also, my gas
> mileage in the jeep is not the greatest (to be expected). Could the
> mixture have an adverse effect on the mpg as well?
>
> As always, thanks to this group for the help....
If you're worried about it at all have the carburetor rebuilt and
replace the choke pull off diaphragm, both go bad about every ten years:
http://www.carburetorfactory.com/expvw03.html
God Bless America, Bill O|||||||O
mailto:-------------------- http://www.----------.com/
wbowlin@gmail.com wrote:
>
> My 88 Jeep Wrangler sometimes blows black smoke when started. The
> smoke leaves a wet mark on the driveway that looks like someone took a
> spray can and lightly sprayed the area under the tailpipe. The smoke
> usually disipates rather qickly. From what I have researched, it is
> the fuel running too rich. Does this sound right on? Also, my gas
> mileage in the jeep is not the greatest (to be expected). Could the
> mixture have an adverse effect on the mpg as well?
>
> As always, thanks to this group for the help....
01-26-2006, 05:47 PM
#19
Guest
Posts: n/a
Re: Black smoke at startup
Some of this will be normal cold mourning choke compensation. But
If you're worried about it at all have the carburetor rebuilt and
replace the choke pull off diaphragm, both go bad about every ten years:
http://www.carburetorfactory.com/expvw03.html
God Bless America, Bill O|||||||O
mailto:-------------------- http://www.----------.com/
wbowlin@gmail.com wrote:
>
> My 88 Jeep Wrangler sometimes blows black smoke when started. The
> smoke leaves a wet mark on the driveway that looks like someone took a
> spray can and lightly sprayed the area under the tailpipe. The smoke
> usually disipates rather qickly. From what I have researched, it is
> the fuel running too rich. Does this sound right on? Also, my gas
> mileage in the jeep is not the greatest (to be expected). Could the
> mixture have an adverse effect on the mpg as well?
>
> As always, thanks to this group for the help....
If you're worried about it at all have the carburetor rebuilt and
replace the choke pull off diaphragm, both go bad about every ten years:
http://www.carburetorfactory.com/expvw03.html
God Bless America, Bill O|||||||O
mailto:-------------------- http://www.----------.com/
wbowlin@gmail.com wrote:
>
> My 88 Jeep Wrangler sometimes blows black smoke when started. The
> smoke leaves a wet mark on the driveway that looks like someone took a
> spray can and lightly sprayed the area under the tailpipe. The smoke
> usually disipates rather qickly. From what I have researched, it is
> the fuel running too rich. Does this sound right on? Also, my gas
> mileage in the jeep is not the greatest (to be expected). Could the
> mixture have an adverse effect on the mpg as well?
>
> As always, thanks to this group for the help....
01-26-2006, 08:06 PM
#20
Guest
Posts: n/a
Re: Black smoke at startup
twaldron did pass the time by typing:
> I had a similar situation once. Black smoke, ran rough when started
> cold. Error Code was for an O2 sensor. I pulled the aircleaner and very
> very slowly poured Berryman B12 down the carb while hand-reving the
> accelerator to keep it running. Ran through the entire can. This cleaned
> off my O2 sensor and sprayed more black crap all over the driveway than
> you've ever seen. After the can was empty and the remaining B12 was
> burned, the motor ran like a top for years after. Never did replace that
> O2 sensor.
Try using ATF fluid. :) Your neighborhood will think there is a house on fire.
--
DougW
> I had a similar situation once. Black smoke, ran rough when started
> cold. Error Code was for an O2 sensor. I pulled the aircleaner and very
> very slowly poured Berryman B12 down the carb while hand-reving the
> accelerator to keep it running. Ran through the entire can. This cleaned
> off my O2 sensor and sprayed more black crap all over the driveway than
> you've ever seen. After the can was empty and the remaining B12 was
> burned, the motor ran like a top for years after. Never did replace that
> O2 sensor.
Try using ATF fluid. :) Your neighborhood will think there is a house on fire.
--
DougW