carter bbd need curb idle -
LinkBack Thread Tools
post #1 of 3 Old 10-18-2009, 03:12 PM Thread Starter
Registered User
2007 XK Commander 
Join Date: Feb 2009
Location: Broomfield
Posts: 180
carter bbd need curb idle

Okay finished the rebuild of the carter bbd and when I was going through all the adjustments found out I dont have a curb idle screw.

I also have a plastic fast idle cam, so if anyone has a metal fast idle cam and curb idle screw they dont want please contact me.

When I screwed in the fuel mixture screws they went in 6 1/2 turns. I ended up having to back these all the way out to 6 in order to get an 800 RPM at warm idle. Wondering what this will do to the carb and gas mileage.

IBGRMPY is offline  
Sponsored Links
post #2 of 3 Old 10-19-2009, 12:14 PM Thread Starter
Registered User
2007 XK Commander 
Join Date: Feb 2009
Location: Broomfield
Posts: 180
To provide more info on what I have done, first it has the Teamrush upgrade and it has been nuttered.

After rebuilding carb I only backed off the mixture screws 1 1/2 Turns. The Jeep started up beautifully and had a fast idle of 1200 RPM. As it warmed up the butterfly when to about 1/4 open and then the jeep died, it would not idle. I backed the mixture screws to 6 turns and it idles about 750RPM warm. I'm thinking this is probably why my plugs had so much build up on them.

Anyone have an opinion? I have a buddy with a BBD, so I will take out his curb idle and go to Ace to match it.

It was 35degrees out this morning and the jeep started beautifully warmed up and idle came down just as its supposed to. I was very happy with this, as I could not get it to idle when cold.
IBGRMPY is offline  
post #3 of 3 Old 10-19-2009, 04:50 PM
Registered User
Join Date: Jul 2005
Location: Las Vegas
Posts: 165
Sounds about right. Mine are backed out about 4 or 4.5 turns can't remember exactly. My old carb was about 5 turns out which shows how inconsistant these carbs are (the BBD I have now is a reman.). You may want to check for vacuum leaks or bad PCV Valve. Other than that these carbs don't adjust like old Rochesters or Holleys where 2.5 turns is all you need.
Tortured is offline  

Quick Reply

Register Now

In order to be able to post messages on the forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.


Confirm Password:
Email Address
Please enter a valid e-mail address for yourself.

Email Address:


Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page

Similar Threads
Thread Thread Starter Jeep Forums Replies Last Post
84 CJ7 will not curb idle nazdackster Jeep CJ Forum 3 11-08-2009 07:50 PM
How to set curb idle screw on MC 2100 carb CrazyHorse6 Jeep CJ Forum 2 07-26-2008 11:32 AM
Carter Idle Curse 1984CJ Jeep CJ Forum 8 08-25-2006 10:17 PM
Carter Idle ClarkGriswold Jeep CJ Forum 0 06-29-2006 08:30 PM
84, Carter POS won't idle AeroViper1 Jeep CJ Forum 31 04-14-2005 05:58 PM

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are On

For the best viewing experience please update your browser to Google Chrome