CJ7 Carter BBD Vacuum Line Help - Page 12 - JeepForum.com

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post #166 of 201 Old 07-08-2013, 03:59 PM
LumpyGrits
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OFS on the pass'n of SMOG.
IF, you have to add 'choke', Your NOT flood'n out. Your to lean in fuel mix.
LG

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post #167 of 201 Old 07-08-2013, 04:21 PM Thread Starter
KnoxButler
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Should adjust my mixtures screws there at about 2 1/2 out. Or should I look at other things, like the float and pump travel, as I adjusted those for less fuel?

PS: what does OFS stand for?

Thanks LG
-Knox
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post #168 of 201 Old 07-08-2013, 04:35 PM
86cj74.2L
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Quote:
Originally Posted by KnoxButler
Should adjust my mixtures screws there at about 2 1/2 out. Or should I look at other things, like the float and pump travel, as I adjusted those for less fuel?

PS: what does OFS stand for?

Thanks LG
-Knox
Was it fully warmed up and still needing choke?

You can set the lean best idle again. Make sure your rpms are low. Like 600 to 800. And if you have a automatic they say to do it while in drive. Which means chocked and locked or someone on the brake while you do the tweeking.
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post #169 of 201 Old 07-08-2013, 04:41 PM
LumpyGrits
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Does it only want to die at a stop??
What does your vac. gauge show at idle. If you don't have a vac. gauge, GET ONE! Set your idle mix to the highest vac reading at about 700rpm
OFS=Out F**king Standing.
LG
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post #170 of 201 Old 07-08-2013, 04:41 PM Thread Starter
KnoxButler
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Ya it was warm, the problem is that i believe it is still at lean best idle.
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post #171 of 201 Old 07-08-2013, 04:55 PM
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Quote:
Originally Posted by KnoxButler
Ya it was warm, the problem is that i believe it is still at lean best idle.
If you turn one of the screws in 1/4 turn and it starts to run rough you are correct.

If you open one of the screws 1/4 turn and the rpms pick up you are too lean.
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post #172 of 201 Old 07-08-2013, 05:00 PM
LumpyGrits
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I would(and this is how I do my BBD),back both screws out 1/8 turn at a time till you get the highest vac. reading. You will notice a much smoother idle also.
LG
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post #173 of 201 Old 07-08-2013, 05:26 PM Thread Starter
KnoxButler
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Ok you guys are right, i had it so if you turn it 1/4 in it would sputter not 1/4 out. Ill go and mess with it.

Also should i reset the floats and pump travel, if there to low could they kill power? Or if its running fine just leave it?
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post #174 of 201 Old 07-08-2013, 05:30 PM
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For now-leave the floats alone.
LG
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post #175 of 201 Old 07-08-2013, 05:33 PM Thread Starter
KnoxButler
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Quote:
Originally Posted by LumpyGrits View Post
Does it only want to die at a stop??
What does your vac. gauge show at idle. If you don't have a vac. gauge, GET ONE! Set your idle mix to the highest vac reading at about 700rpm
OFS=Out F**king Standing.
LG
No it doesnt seem to want to die at idle.

Vac red 18 in HG at idle, ported of course.
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post #176 of 201 Old 07-08-2013, 06:12 PM
LumpyGrits
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Is the vac. gauge needle pretty steady at +/- 1 Hg or so?
If your see'n 18 Hg at idle, your idle mix is pretty good then.
What is your altitude(ASL)?
LG
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post #177 of 201 Old 07-08-2013, 07:20 PM
Jon In Tucson
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Hey guys I PASSED! I had to adjust the pump travel and the metering rods to get it to not flood. But I passed!
Thank you all so so much! You guys have all helped very much!

Soon im going to start a bild/restoration thread for my Jeep where ill be asking questions about paint, dash board guages (John Strenk ), etc. Ill also be posting pictures of my progress.


Quick question, iv noticed that the only way i can keep the engine from flooding is to have the choke pulled out a little bit. Is it normal for the carb to like the choke closed off a bit? or do i need to re tune it again, if so what do i need to adjust?
Congratulations! Feels good, don't it? Now write down all of the Idle screw adjustments, timing, whatever you did to get to this place. That way next year, flip open the notebook to your emissions page and get it through. Good deal passing! God bless.
Jon In Tucson

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panic." - Mike

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post #178 of 201 Old 07-09-2013, 03:52 PM Thread Starter
KnoxButler
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LG - its fairly steady, were at 2700 here.

Jon - it does feel good! I will definitely write everything down!

-Knox
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post #179 of 201 Old 07-09-2013, 04:01 PM
LumpyGrits
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I'm 2734'(ASL)in my d'way.
With your vac. reading, and alt. I would say your idle mix is good.
If you speed the rpms up kinda slow. Does it stumble?
What about when you 'stomp-it'?
LG
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post #180 of 201 Old 07-09-2013, 04:03 PM Thread Starter
KnoxButler
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im assuming your talking about when its under load, and with the choke wide open. slow = no not really unless im at a steep hill or something, fast = yes
When I have the choke closed off a bit I don't have any problems.
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carter carb , cj7 , egr , emissions , vacuum

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