RocknTJ

Carter's don't have replaceable/upgradable jets?
Then you back off the idle mixture.

Just a thought.

--James


"KurtS" <nospam@thanksImFull.spam> wrote in message
news:BCBAC1B6.33695%nospam@thanksImFull.spam...
> Hey all,
> 85 CJ7/258/Carter BBD/recent rebuild/computer back in the loop for now
>
> I've finally got some time to deal with the mild ping my engine has
(running
> any Octane rating). Here's the story: I recently had the engine rebuilt.
It
> pings on mild acceleration only. If I put my foot into it, the ping stops.
> Correct me if I'm wrong but that indicates a lean condition at cruising
> throttle, right? I'm 99% certain there are no vac leaks - replaced all vac
> stuff a year ago. I've replaced the distributor because the shop said the
> weights were worn out on my old one and they weren't keeping the timing
from
> going off the dial. I also replaced the EGR -- definitely working as
> expected. The shop told me that since it still pings on mild acceleration
> after replacing the distrib and EGR, that I need to richen the mix a
little
> (not the idle mix obviously). Looking at the gizmos under the vent cover
> plate on the carb, what do/can I adjust? TIA for any help.
>
> Kurt
>

L.W.(=?iso-8859-1?Q?=DFill?=) Hughes III

http://www.carburetorfactory.com/expvw03.html
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/

RocknTJ wrote:
>
> Carter's don't have replaceable/upgradable jets?
> Then you back off the idle mixture.
>
> Just a thought.
>
> --James

L.W.(=?iso-8859-1?Q?=DFill?=) Hughes III

http://www.carburetorfactory.com/expvw03.html
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/

RocknTJ wrote:
>
> Carter's don't have replaceable/upgradable jets?
> Then you back off the idle mixture.
>
> Just a thought.
>
> --James

L.W.(=?iso-8859-1?Q?=DFill?=) Hughes III

http://www.carburetorfactory.com/expvw03.html
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/

RocknTJ wrote:
>
> Carter's don't have replaceable/upgradable jets?
> Then you back off the idle mixture.
>
> Just a thought.
>
> --James

L.W.(=?iso-8859-1?Q?=DFill?=) Hughes III

http://www.carburetorfactory.com/expvw03.html
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/

RocknTJ wrote:
>
> Carter's don't have replaceable/upgradable jets?
> Then you back off the idle mixture.
>
> Just a thought.
>
> --James

RocknTJ

So they do (#49 on the exploded view).
Find out what jets are in it and get the next size bigger. Then you can
adjust the idle mixer with a vacuum gauge until you get max vacuum.

Along the same lines as Mike stated, if you run the engine lean for too long
you can damage something.

--James

"L.W. (ßill) ------ III" <----------@***.net> wrote in message
news:4096DFAD.7365B516@***.net...
> http://www.carburetorfactory.com/expvw03.html
> God Bless America, ßill O|||||||O
> mailto:-------------------- http://www.----------.com/
>
> RocknTJ wrote:
> >
> > Carter's don't have replaceable/upgradable jets?
> > Then you back off the idle mixture.
> >
> > Just a thought.
> >
> > --James

RocknTJ

So they do (#49 on the exploded view).
Find out what jets are in it and get the next size bigger. Then you can
adjust the idle mixer with a vacuum gauge until you get max vacuum.

Along the same lines as Mike stated, if you run the engine lean for too long
you can damage something.

--James

"L.W. (ßill) ------ III" <----------@***.net> wrote in message
news:4096DFAD.7365B516@***.net...
> http://www.carburetorfactory.com/expvw03.html
> God Bless America, ßill O|||||||O
> mailto:-------------------- http://www.----------.com/
>
> RocknTJ wrote:
> >
> > Carter's don't have replaceable/upgradable jets?
> > Then you back off the idle mixture.
> >
> > Just a thought.
> >
> > --James

RocknTJ

So they do (#49 on the exploded view).
Find out what jets are in it and get the next size bigger. Then you can
adjust the idle mixer with a vacuum gauge until you get max vacuum.

Along the same lines as Mike stated, if you run the engine lean for too long
you can damage something.

--James

"L.W. (ßill) ------ III" <----------@***.net> wrote in message
news:4096DFAD.7365B516@***.net...
> http://www.carburetorfactory.com/expvw03.html
> God Bless America, ßill O|||||||O
> mailto:-------------------- http://www.----------.com/
>
> RocknTJ wrote:
> >
> > Carter's don't have replaceable/upgradable jets?
> > Then you back off the idle mixture.
> >
> > Just a thought.
> >
> > --James

RocknTJ

So they do (#49 on the exploded view).
Find out what jets are in it and get the next size bigger. Then you can
adjust the idle mixer with a vacuum gauge until you get max vacuum.

Along the same lines as Mike stated, if you run the engine lean for too long
you can damage something.

--James

"L.W. (ßill) ------ III" <----------@***.net> wrote in message
news:4096DFAD.7365B516@***.net...
> http://www.carburetorfactory.com/expvw03.html
> God Bless America, ßill O|||||||O
> mailto:-------------------- http://www.----------.com/
>
> RocknTJ wrote:
> >
> > Carter's don't have replaceable/upgradable jets?
> > Then you back off the idle mixture.
> >
> > Just a thought.
> >
> > --James

bllsht

In message <BCBB9D5B.33822%nospam@thanksImFull.spam>, "KurtS" wrote:

>Hrm. When I back it off from 9 deg BTDC, idle falls to crap. Looks like I
>have some more vac issue hunting. tnx Bill.

IF you're setting the timing at idle speed, you're way too advanced.

Set it to 9 degrees with the vac advance hose disconnected and plugged, vacuum
switch assy electrical connector unplugged, and engine running at 1600 RPM.

Could also be your knock sensor has gone south.


>
>> From: L.W.(ßill) ------ III <----------@***.net>
>> Organization: Not@Home
>> Newsgroups: rec.autos.makers.jeep+******
>> Date: Sun, 02 May 2004 12:31:21 -0700
>> Subject: Re: Ping revisited
>>
>> You're too far advanced, when you stick your foot in it your vacuum
>> advance has less vacuum therefore retards the spark to a place it can
>> burn the gas.