CJ7 Carter BBD Vacuum Line Help - Page 6 - JeepForum.com
Search  
Sign Up   Today's Posts
User: Pass: Remember?
Advertise Here
Jeep Home Jeep Forum Jeep Classifieds Jeep Registry JeepSpace Jeep Reviews Jeep Gallery Jeep Clubs Jeep Groups Jeep Videos Jeep Events Jeep Articles
Go Back JeepForum.com > Models > Jeep CJ Forum > CJ7 Carter BBD Vacuum Line Help

FS: 2007-2013 Jeep Wrangler "HALO" Angel Eye KitTHE NEW! VANCO DUAL MODE 15/16″ Big Brake Kit w/BlaFS: Wranger BRIGHT License Plate LED! Just $3! Great value

Reply
Unread 07-04-2013, 02:39 PM   #76
KnoxButler
Registered User
1981 CJ7 
 
Join Date: Jun 2013
Location: Tucson, AZ
Posts: 149
Quick question... Iv got my VA hooked up to manifold vacuum, meaning timing is the most advanced at idle right? So how does it work while using a ported vacuum, it would advance the timing while at higher rpms and or load? Iv seen a lot of debate around weather to use ported or manifold and I guess my question is, it seems to me like the VA would preform very different between manifold and ported so how is there not one definitive right way? Hope that makes sense, if not ill try and clarify.

KnoxButler is offline   Reply With Quote
Unread 07-04-2013, 02:42 PM   #77
LumpyGrits
Registered User
1985 CJ7 
 
Join Date: Jul 2010
Location: The Mojave Desert Palmdale Ca. U.S.A.
Posts: 4,439
Try BOTH ways before you take it in.
Seat of the pants, may tell what's best.
LG
LumpyGrits is offline   Reply With Quote
Unread 07-04-2013, 02:48 PM   #78
KnoxButler
Registered User
1981 CJ7 
 
Join Date: Jun 2013
Location: Tucson, AZ
Posts: 149
Ok ill have to do that, so does the advance give you more power when its advance ie manifold = low end power, port= high end power?
KnoxButler is offline   Reply With Quote
Unread 07-04-2013, 02:57 PM   #79
LumpyGrits
Registered User
1985 CJ7 
 
Join Date: Jul 2010
Location: The Mojave Desert Palmdale Ca. U.S.A.
Posts: 4,439
This may help.......
http://www.gofastforless.com/ignition/advance.htm

LG
LumpyGrits is offline   Reply With Quote
Unread 07-04-2013, 03:05 PM   #80
86cj74.2L
Web Wheeler
 
86cj74.2L's Avatar
2004 WJ 
 
Join Date: Jul 2006
Location: Stouchsburg, PA
Posts: 6,310
One thing to make sure of is that if you have a carter BBD with the stepper control that the needles are always moving. If they are all the way in or all the way back you need to readjust your mixture screws. If it sits centered and never moves after engine gets above 130 degrees you need to find out which switch is bad.

Of coarse if you have a pre 1983 (or I think 1981 if California) no worries about the computer working cause there isn't one.
86cj74.2L is offline   Reply With Quote
Unread 07-04-2013, 03:08 PM   #81
KnoxButler
Registered User
1981 CJ7 
 
Join Date: Jun 2013
Location: Tucson, AZ
Posts: 149
Great link!
Skimmed through it and found the spot about the difference between the two. Very interesting, I guess that makes sense. Ill have to try both but unless I feel a big difference ill probably stick with manifold vacuum.
KnoxButler is offline   Reply With Quote
Unread 07-04-2013, 04:00 PM   #82
John Strenk
Moderator
 
John Strenk's Avatar
1976 CJ5 
 
Join Date: Feb 2005
Location: Shalersville Ohio
Posts: 12,965
It was at 20* and didn't ping. Interesting.

Let us know how the test turned out...
John Strenk is offline   Reply With Quote
Unread 07-04-2013, 04:33 PM   #83
KnoxButler
Registered User
1981 CJ7 
 
Join Date: Jun 2013
Location: Tucson, AZ
Posts: 149
Describe a "ping" its a lot quieter than it was before. The engine was fluttery but I had stuck that on it being so lean and idling so low. Now with proper timing its at the same settings before still running like a champ.
KnoxButler is offline   Reply With Quote
Unread 07-04-2013, 04:48 PM   #84
John Strenk
Moderator
 
John Strenk's Avatar
1976 CJ5 
 
Join Date: Feb 2005
Location: Shalersville Ohio
Posts: 12,965
Quote:
Originally Posted by KnoxButler View Post
Describe a "ping" its a lot quieter than it was before. The engine was fluttery but I had stuck that on it being so lean and idling so low. Now with proper timing its at the same settings before still running like a champ.

You can kind of hear it here:
https://www.youtube.com/watch?v=JA0cH_vRABg

sounds at first like keys jingling.
John Strenk is offline   Reply With Quote
Unread 07-04-2013, 04:52 PM   #85
KnoxButler
Registered User
1981 CJ7 
 
Join Date: Jun 2013
Location: Tucson, AZ
Posts: 149
If i had heard it would i know? Im not really hearing anything familiar with the video. My jeep has no doors or top and the exhaust isnt the quietest, is it possible that I just didn't hear it, or is it a fairly obvious noise. None the less it seems to be running very quiet, well more so than before.
KnoxButler is offline   Reply With Quote
Unread 07-04-2013, 04:58 PM   #86
KnoxButler
Registered User
1981 CJ7 
 
Join Date: Jun 2013
Location: Tucson, AZ
Posts: 149
Also when it was idling i never heard any pinging noises... Dont know if it would do that with that bad of timing.
KnoxButler is offline   Reply With Quote
Unread 07-04-2013, 05:04 PM   #87
86cj74.2L
Web Wheeler
 
86cj74.2L's Avatar
2004 WJ 
 
Join Date: Jul 2006
Location: Stouchsburg, PA
Posts: 6,310
Does your carb have a bundle of wires going to it?

If you do, you need to go to my YouTube channel "EugeneKingify" and watch the two videos of stepper pins at idle. If your carb is like that one and not and the pins are not moving its most likely your high HydroCarbon.
86cj74.2L is offline   Reply With Quote
Unread 07-04-2013, 05:08 PM   #88
robs7
Registered User
1983 CJ7 
 
Join Date: May 2013
Location: Louisville, Kentucky
Posts: 182
Quote:
Originally Posted by KnoxButler
If i had heard it would i know? Im not really hearing anything familiar with the video. My jeep has no doors or top and the exhaust isnt the quietest, is it possible that I just didn't hear it, or is it a fairly obvious noise. None the less it seems to be running very quiet, well more so than before.
Low RPM and under load, it will sound like a Diesel engine. Not as loud as a diesel but that same sort of noise. You wouldn't notice it as much at idle unless it was really bad. You would notice it in high gear going up a long steep hill with the pedal to the floor. Rob
robs7 is offline   Reply With Quote
Unread 07-04-2013, 05:09 PM   #89
KnoxButler
Registered User
1981 CJ7 
 
Join Date: Jun 2013
Location: Tucson, AZ
Posts: 149
86cj it has no stepper motor.

Robs, do you mean that whooshing noise?
KnoxButler is offline   Reply With Quote
Unread 07-04-2013, 05:44 PM   #90
robs7
Registered User
1983 CJ7 
 
Join Date: May 2013
Location: Louisville, Kentucky
Posts: 182
No, the clacking sound. You will know it when you hear it. The more advanced the timing the louder it will be. Sounds like metal pinging against metal. Actually, that's exactly what it is. Rob
robs7 is offline   Reply With Quote




Jeep, Wrangler, Cherokee, Grand Cherokee, and other models are copyrighted and trademarked to Jeep/Chrysler Corporation. JeepForum.com is not in any way associated with Jeep or the Chrysler Corp.