Carter BBD rebuild - Page 2 - JeepForum.com

Reply
 
LinkBack Thread Tools
post #16 of 151 Old 02-24-2014, 02:14 PM Thread Starter
moto450r
Registered User
1985 CJ7 
 
Join Date: Dec 2010
Location: Pahrump
Posts: 340
Quote:
Originally Posted by 86cj74.2L View Post
With sediment in your fuel bowl make sure the emulsion tubes are clean.

Soak everything not plastic overnight. Then blow all passages clean with carb cleaner.
I saw some stuff in one of the tubes but when I took the pics it was gone. I'm sure its still in there. What will enlarging the tubes to .037" do? I am not nuttered....errr I mean the Jeep is not Nuttered, if that has anything to do with it.

Tubes measure .032"

(had to put a rag on them so the iPad would focus)






BORN 196# - DIED 20##
Currently living thru the DASH in the middle
moto450r is offline  
Sponsored Links
Advertisement
 
post #17 of 151 Old 02-24-2014, 02:48 PM Thread Starter
moto450r
Registered User
1985 CJ7 
 
Join Date: Dec 2010
Location: Pahrump
Posts: 340
Back to this vacuum thing.... is the gap they say should be .035" measured here? IF so, ummm, I think mine is off by a mile!!!


BORN 196# - DIED 20##
Currently living thru the DASH in the middle
moto450r is offline  
post #18 of 151 Old 02-24-2014, 03:26 PM Thread Starter
moto450r
Registered User
1985 CJ7 
 
Join Date: Dec 2010
Location: Pahrump
Posts: 340
Both main jets.

One is a 392 and the other is 389. These should be the same size on both sides, FSM says 392. YaY!


BORN 196# - DIED 20##
Currently living thru the DASH in the middle
moto450r is offline  
post #19 of 151 Old 02-24-2014, 03:38 PM
86cj74.2L
Web Wheeler
 
86cj74.2L's Avatar
2004 WJ 
 
Join Date: Jul 2006
Location: Stouchsburg, PA
Posts: 10,051
The gap is where the plate and barrel (step up piston?) touch. You are showing zero gap from the camera angle.

Section Bd Cooling and Fuel in the FSM has good reference material as well as the carter Service Manuals.

All three are available with links here somewhere.

For some reason my phone is not letting me take a snapshot of the page to post as a picture. I have most of the FSM saved as PDF on my iPhone via QuickOffice Pro
86cj74.2L is online now  
post #20 of 151 Old 02-24-2014, 03:46 PM Thread Starter
moto450r
Registered User
1985 CJ7 
 
Join Date: Dec 2010
Location: Pahrump
Posts: 340
Quote:
Originally Posted by 86cj74.2L
The gap is where the plate and barrel (step up piston?) touch. You are showing zero gap from the camera angle. Section Bd Cooling and Fuel in the FSM has good reference material as well as the carter Service Manuals. All three are available with links here somewhere. For some reason my phone is not letting me take a snapshot of the page to post as a picture. I have most of the FSM saved as PDF on my iPhone via QuickOffice Pro
I'll look at the FSM. The instruction sheet shows to measure between the tang and groove of the plates.



The FSM shows the gap is measured like 86CJ said! FSM wins. (and 86cj too).

BORN 196# - DIED 20##
Currently living thru the DASH in the middle
moto450r is offline  
post #21 of 151 Old 02-24-2014, 04:07 PM
John Strenk
Moderator
 
John Strenk's Avatar
1976 CJ5 
 
Join Date: Feb 2005
Location: Shalersville Ohio
Posts: 15,539
Quote:
Originally Posted by moto450r View Post
I think the little wire spring on the "vacuum piston assembly" is messed up?
They don't show it in the exploded view of the instructions.
When I opened the top the spring was behind the "right" metering rod and the left side of the spring can be seen laying on the metering rod arm.
How should this spring be routed?



You can see how the misplaced spring has allowed the left metering rod (see the shiny at the bottom) to rub in the tube.



Here is another view of the sprung spring

Quote:
Originally Posted by John Strenk View Post
The left side should be the same as the right side.

I just got sting by this myself only the spring on mine is warped and is always slipping off the needle. When it happens, the needle gets stuck and the engine rpm shoots up to around 3000 RPM.

Sent from my iPhone using JeepForum
Quote:
Originally Posted by moto450r View Post
I'm hoping I can bend it back into shape. John would you have a picture of what it should look like?

Here is what mine looked like originally:


Setting the float on the jeep is fun.



and use two wrenches
John Strenk is offline  
post #22 of 151 Old 02-24-2014, 04:19 PM
86cj74.2L
Web Wheeler
 
86cj74.2L's Avatar
2004 WJ 
 
Join Date: Jul 2006
Location: Stouchsburg, PA
Posts: 10,051
A stiff wire to dig out the emulsion tubes.

The .037 drill bit is a numbered bit. I believe its a #63. Double check.

.092 I thought was the main jet size. I wonder if the 392 is a .092 and the 398 is the .089

There is a chart in the FSM that gives jet sizes per carb. (Auto vs Manual at least).
86cj74.2L is online now  
post #23 of 151 Old 02-24-2014, 04:41 PM Thread Starter
moto450r
Registered User
1985 CJ7 
 
Join Date: Dec 2010
Location: Pahrump
Posts: 340
Quote:
Originally Posted by moto450r View Post
Both main jets.

One is a 392 and the other is 389. These should be the same size on both sides, FSM says 392. YaY!

Glitch fixed! resized the 389 to .092

BORN 196# - DIED 20##
Currently living thru the DASH in the middle
moto450r is offline  
post #24 of 151 Old 02-24-2014, 04:53 PM
86cj74.2L
Web Wheeler
 
86cj74.2L's Avatar
2004 WJ 
 
Join Date: Jul 2006
Location: Stouchsburg, PA
Posts: 10,051
I meant 389........

Sometimes the jet bore is not a strait bore to promote atomization. Its cupped with a sharp edge on the top of the hole.
86cj74.2L is online now  
post #25 of 151 Old 02-24-2014, 05:15 PM Thread Starter
moto450r
Registered User
1985 CJ7 
 
Join Date: Dec 2010
Location: Pahrump
Posts: 340
Quote:
Originally Posted by 86cj74.2L
I meant 389........ Sometimes the jet bore is not a strait bore to promote atomization. Its cupped with a sharp edge on the top of the hole.
Yeah this is a temp fix. I'll be looking to find the correct jet.

BORN 196# - DIED 20##
Currently living thru the DASH in the middle
moto450r is offline  
post #26 of 151 Old 02-24-2014, 05:47 PM
86cj74.2L
Web Wheeler
 
86cj74.2L's Avatar
2004 WJ 
 
Join Date: Jul 2006
Location: Stouchsburg, PA
Posts: 10,051
Finally got it.
Attached Images
 
86cj74.2L is online now  
post #27 of 151 Old 02-24-2014, 05:57 PM Thread Starter
moto450r
Registered User
1985 CJ7 
 
Join Date: Dec 2010
Location: Pahrump
Posts: 340
At least the metering rods are the same! You can see the bottom one is a bit worn from the spring being ajar.

But of course they are the wrong number! they should be 2384. ARGH!


BORN 196# - DIED 20##
Currently living thru the DASH in the middle
moto450r is offline  
post #28 of 151 Old 02-24-2014, 06:22 PM Thread Starter
moto450r
Registered User
1985 CJ7 
 
Join Date: Dec 2010
Location: Pahrump
Posts: 340
Quote:
Originally Posted by 86cj74.2L
Finally got it.
Thanks!

BORN 196# - DIED 20##
Currently living thru the DASH in the middle
moto450r is offline  
post #29 of 151 Old 02-24-2014, 06:33 PM Thread Starter
moto450r
Registered User
1985 CJ7 
 
Join Date: Dec 2010
Location: Pahrump
Posts: 340
Should one of these seals be on the pump shaft? There sure is a big hole between the shaft and carb body. Nothing is shown in the FSM or instructions.


BORN 196# - DIED 20##
Currently living thru the DASH in the middle
moto450r is offline  
post #30 of 151 Old 02-24-2014, 07:37 PM
86cj74.2L
Web Wheeler
 
86cj74.2L's Avatar
2004 WJ 
 
Join Date: Jul 2006
Location: Stouchsburg, PA
Posts: 10,051
Not that I recall.
86cj74.2L is online now  
Reply

Quick Reply
Message:
Options

Register Now



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

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

Password:


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



Email Address:
OR

Log-in









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



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