Dave McGlynn

Also, I just read a couple articles on here about using a full can of
carb-cleaner down the throttle body to rid the engine of carbon.. Is
this a good idea?

Mike Romain

It is not carb cleaner!!!

Carb cleaner will damage a TB unit, they make throttle body cleaners.
if you check, you will find some that are designed to clean the TB and
upper cylinder areas. You follow the directions and use the whole can.

A pint of ATF poured slowly down the throat of the TB while keeping it
running with your hand on the throttle does the same job. That is also
the directions for the can of cleaner. ATF makes a 'lot' of white
smoke, but works excellently.

Lots of folks say a pint of water poured down the same way will also
clean it good. That makes sense, if water leaks into a cylinder, the
plug comes out clean like new.

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

Dave McGlynn wrote:
>
> Also, I just read a couple articles on here about using a full can of
> carb-cleaner down the throttle body to rid the engine of carbon.. Is
> this a good idea?

Mike Romain

It is not carb cleaner!!!

Carb cleaner will damage a TB unit, they make throttle body cleaners.
if you check, you will find some that are designed to clean the TB and
upper cylinder areas. You follow the directions and use the whole can.

A pint of ATF poured slowly down the throat of the TB while keeping it
running with your hand on the throttle does the same job. That is also
the directions for the can of cleaner. ATF makes a 'lot' of white
smoke, but works excellently.

Lots of folks say a pint of water poured down the same way will also
clean it good. That makes sense, if water leaks into a cylinder, the
plug comes out clean like new.

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

Dave McGlynn wrote:
>
> Also, I just read a couple articles on here about using a full can of
> carb-cleaner down the throttle body to rid the engine of carbon.. Is
> this a good idea?

Mike Romain

It is not carb cleaner!!!

Carb cleaner will damage a TB unit, they make throttle body cleaners.
if you check, you will find some that are designed to clean the TB and
upper cylinder areas. You follow the directions and use the whole can.

A pint of ATF poured slowly down the throat of the TB while keeping it
running with your hand on the throttle does the same job. That is also
the directions for the can of cleaner. ATF makes a 'lot' of white
smoke, but works excellently.

Lots of folks say a pint of water poured down the same way will also
clean it good. That makes sense, if water leaks into a cylinder, the
plug comes out clean like new.

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

Dave McGlynn wrote:
>
> Also, I just read a couple articles on here about using a full can of
> carb-cleaner down the throttle body to rid the engine of carbon.. Is
> this a good idea?

Mike Romain

It is not carb cleaner!!!

Carb cleaner will damage a TB unit, they make throttle body cleaners.
if you check, you will find some that are designed to clean the TB and
upper cylinder areas. You follow the directions and use the whole can.

A pint of ATF poured slowly down the throat of the TB while keeping it
running with your hand on the throttle does the same job. That is also
the directions for the can of cleaner. ATF makes a 'lot' of white
smoke, but works excellently.

Lots of folks say a pint of water poured down the same way will also
clean it good. That makes sense, if water leaks into a cylinder, the
plug comes out clean like new.

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

Dave McGlynn wrote:
>
> Also, I just read a couple articles on here about using a full can of
> carb-cleaner down the throttle body to rid the engine of carbon.. Is
> this a good idea?

Paul Brogren

I have tried the water method. I used a spray bottle and shot about about a
pint in it. after the last bit I idled the motor for about 30 sec. to a
minute shut it down and let it sit for a minute. Started it up and gave it
a good rev. Boy it belched out a carbon soot cloud and ran better after
that. I like the cat. convert. idea too. I have heard the initial rattle
of the unit failing. It was on a Dodge Dakota though, but still DC.

Paul
"Handywired" <handywired@aol.com> wrote in message
news:20040429043922.12081.00000294@mb-m04.aol.com...
> It's a long shot, but my catalytic converter, when it first started it's
death
> rattle, sounded enough like low-end noise (like when you lug the engine
bad) to
> scare the bejeezus out of me.
>
> -jeff
>
> >I have a 98 TJ with the 4.0L engine, with 45,000 miles on it. Just
> >recently, I'd say, within the past 6 months or so, I started to
> >develop a noise in my engine. It doesn't happen when at idle, or at
> >least, I can't hear it. It only happens when the engine is under load.
> >If I "lug" the engine, this sound is *VERY* apparent. When I first
> >began to hear it, it was fairly quiet. I had to strain to hear it. (it
> >was on the highway in a soft-top :) but over time, it's gotten much
> >louder.
>
>

Paul Brogren

I have tried the water method. I used a spray bottle and shot about about a
pint in it. after the last bit I idled the motor for about 30 sec. to a
minute shut it down and let it sit for a minute. Started it up and gave it
a good rev. Boy it belched out a carbon soot cloud and ran better after
that. I like the cat. convert. idea too. I have heard the initial rattle
of the unit failing. It was on a Dodge Dakota though, but still DC.

Paul
"Handywired" <handywired@aol.com> wrote in message
news:20040429043922.12081.00000294@mb-m04.aol.com...
> It's a long shot, but my catalytic converter, when it first started it's
death
> rattle, sounded enough like low-end noise (like when you lug the engine
bad) to
> scare the bejeezus out of me.
>
> -jeff
>
> >I have a 98 TJ with the 4.0L engine, with 45,000 miles on it. Just
> >recently, I'd say, within the past 6 months or so, I started to
> >develop a noise in my engine. It doesn't happen when at idle, or at
> >least, I can't hear it. It only happens when the engine is under load.
> >If I "lug" the engine, this sound is *VERY* apparent. When I first
> >began to hear it, it was fairly quiet. I had to strain to hear it. (it
> >was on the highway in a soft-top :) but over time, it's gotten much
> >louder.
>
>

Paul Brogren

I have tried the water method. I used a spray bottle and shot about about a
pint in it. after the last bit I idled the motor for about 30 sec. to a
minute shut it down and let it sit for a minute. Started it up and gave it
a good rev. Boy it belched out a carbon soot cloud and ran better after
that. I like the cat. convert. idea too. I have heard the initial rattle
of the unit failing. It was on a Dodge Dakota though, but still DC.

Paul
"Handywired" <handywired@aol.com> wrote in message
news:20040429043922.12081.00000294@mb-m04.aol.com...
> It's a long shot, but my catalytic converter, when it first started it's
death
> rattle, sounded enough like low-end noise (like when you lug the engine
bad) to
> scare the bejeezus out of me.
>
> -jeff
>
> >I have a 98 TJ with the 4.0L engine, with 45,000 miles on it. Just
> >recently, I'd say, within the past 6 months or so, I started to
> >develop a noise in my engine. It doesn't happen when at idle, or at
> >least, I can't hear it. It only happens when the engine is under load.
> >If I "lug" the engine, this sound is *VERY* apparent. When I first
> >began to hear it, it was fairly quiet. I had to strain to hear it. (it
> >was on the highway in a soft-top :) but over time, it's gotten much
> >louder.
>
>

Paul Brogren

I have tried the water method. I used a spray bottle and shot about about a
pint in it. after the last bit I idled the motor for about 30 sec. to a
minute shut it down and let it sit for a minute. Started it up and gave it
a good rev. Boy it belched out a carbon soot cloud and ran better after
that. I like the cat. convert. idea too. I have heard the initial rattle
of the unit failing. It was on a Dodge Dakota though, but still DC.

Paul
"Handywired" <handywired@aol.com> wrote in message
news:20040429043922.12081.00000294@mb-m04.aol.com...
> It's a long shot, but my catalytic converter, when it first started it's
death
> rattle, sounded enough like low-end noise (like when you lug the engine
bad) to
> scare the bejeezus out of me.
>
> -jeff
>
> >I have a 98 TJ with the 4.0L engine, with 45,000 miles on it. Just
> >recently, I'd say, within the past 6 months or so, I started to
> >develop a noise in my engine. It doesn't happen when at idle, or at
> >least, I can't hear it. It only happens when the engine is under load.
> >If I "lug" the engine, this sound is *VERY* apparent. When I first
> >began to hear it, it was fairly quiet. I had to strain to hear it. (it
> >was on the highway in a soft-top :) but over time, it's gotten much
> >louder.
>
>