Cj dies sometimes - JeepForum.com

Reply
 
LinkBack Thread Tools
post #1 of 17 Old 07-05-2013, 08:31 PM Thread Starter
jamesfd52
Registered User
 
Join Date: Jul 2013
Location: florence
Posts: 20
Cj dies sometimes

I'm new here and new to the jeep world. I bought a 1975 cj5. On the way home it died and backfired. I noticed it did not have a gas vent hose so I put one on. Then tonight while showing it off it died again. Fuel gauge is broke so I put 5 gallons on it. Any ideas out there?

jamesfd52 is offline  
Sponsored Links
Advertisement
 
post #2 of 17 Old 07-05-2013, 08:54 PM
DaemonForce
Registered User
1983  
 
Join Date: Jun 2013
Location: Centralia
Posts: 146
Garage
What carb does it have? Is it able to idle properly?
DaemonForce is offline  
post #3 of 17 Old 07-05-2013, 09:02 PM Thread Starter
jamesfd52
Registered User
 
Join Date: Jul 2013
Location: florence
Posts: 20
Idles fine. After it sets for a minute it goes on. I will have to answer the carb question tomorrow. Sorry. It just shuts down.
jamesfd52 is offline  
post #4 of 17 Old 07-05-2013, 09:57 PM
DaemonForce
Registered User
1983  
 
Join Date: Jun 2013
Location: Centralia
Posts: 146
Garage
Is it able to start back up right away? If not that might be an ignition thing then. When is the last time you replaced the Ignition Control Module?
DaemonForce is offline  
post #5 of 17 Old 07-06-2013, 07:09 AM Thread Starter
jamesfd52
Registered User
 
Join Date: Jul 2013
Location: florence
Posts: 20
Like I said. I bought the jeep yesterday. I'm not sure when things have been completely done
jamesfd52 is offline  
post #6 of 17 Old 07-06-2013, 01:23 PM Thread Starter
jamesfd52
Registered User
 
Join Date: Jul 2013
Location: florence
Posts: 20
It has the 258 in line 6 and a carter carb
jamesfd52 is offline  
post #7 of 17 Old 07-06-2013, 04:21 PM
DaemonForce
Registered User
1983  
 
Join Date: Jun 2013
Location: Centralia
Posts: 146
Garage
Ah, so this is a completely different thing to you then. It's a classic arrangement that probably hasn't been overhauled since it was built. There's a lot I can suggest but there's a lot more to check. It's too much work until the actual problem can be identified. Keep an eye on how the engine behaves. Pay close attention to the ignition system behavior. How it dies, if it starts hard or acts like it has a bad coil or sounds out of time...Things like that.

You also seem to have an issue with venting fuel. Did the new hose help at all? Does the tank require a vented gas cap?
DaemonForce is offline  
post #8 of 17 Old 07-06-2013, 04:28 PM Thread Starter
jamesfd52
Registered User
 
Join Date: Jul 2013
Location: florence
Posts: 20
The vented hose issue helped with losing fuel on turns and take offs. It is vented cap. My father in law said it seems to be out of timing. Gonna put a light on it Monday. I would love to find a complete wiring diagram of the entire jeep and do that first. Is slack in steering common
jamesfd52 is offline  
post #9 of 17 Old 07-06-2013, 05:03 PM Thread Starter
jamesfd52
Registered User
 
Join Date: Jul 2013
Location: florence
Posts: 20
@daemonforce. I also just noticed 2 vacuum hoses missing from the carb. 1 sucks and 1 blows
jamesfd52 is offline  
post #10 of 17 Old 07-06-2013, 07:23 PM
DaemonForce
Registered User
1983  
 
Join Date: Jun 2013
Location: Centralia
Posts: 146
Garage
Are they just small vacuum ports? Seal them off with caps. If they're the big ones on the front of the carb you need to tee them together and then plumb that into the big open port on your charcoal canister. Some guys cap the big port on the rear of the carb, I just plumb it into my rear PCV.
DaemonForce is offline  
post #11 of 17 Old 07-06-2013, 07:26 PM Thread Starter
jamesfd52
Registered User
 
Join Date: Jul 2013
Location: florence
Posts: 20
They are 2 small ones. One on left and one on right. I will plug them
jamesfd52 is offline  
post #12 of 17 Old 07-06-2013, 07:28 PM
DaemonForce
Registered User
1983  
 
Join Date: Jun 2013
Location: Centralia
Posts: 146
Garage
Probably a good idea. This engine will sputter and constantly hiss when there's a gigantic vacuum leak like that.
DaemonForce is offline  
post #13 of 17 Old 07-07-2013, 07:43 AM Thread Starter
jamesfd52
Registered User
 
Join Date: Jul 2013
Location: florence
Posts: 20
Here is one of vacuum ports

Name:  image-62710833.jpg
Views: 23
Size:  497.7 KB
Attached Images
 
jamesfd52 is offline  
post #14 of 17 Old 07-07-2013, 09:37 AM
DaemonForce
Registered User
1983  
 
Join Date: Jun 2013
Location: Centralia
Posts: 146
Garage
Yeah, cute little vacuum leaks that cause endless sputtering, hissing and intermittent death. I would cap them off and then check the engine timing. It's probably in the right spot but who knows? I'm not used to seeing that kind of mounting base though. That looks like the 232 intake. Is that a YF Carter? You have a single barrel carb on a 258? I've always been curious about how well that would run. A lot of people with the more common 2 barrel Carters still complain that it's not enough for this old engine. I'm still on the fence about that argument and they'll preach Motorcraft until the cows come home but I think there's a certain element of unique operation lost when going to that. I would say if you can keep that engine from sputtering and dying when it only has a single barrel carb, you're pretty good at something. O_o
DaemonForce is offline  
post #15 of 17 Old 07-07-2013, 03:38 PM
cruiser54
Web Wheeler
 
cruiser54's Avatar
1990 MJ Comanche 
 
Join Date: Oct 2009
Location: Prescott
Posts: 11,169
The lower one goes to the distributor vacuum advance. Plug the upper one for now.

If you own a Renix Jeep, you'll want to check this out.

An index to over 30 write-ups can be found in the link below

www.cruiser54.com

My Jeep Technical Photos

http://www.cherokeeforum.com/g/album/1725214
cruiser54 is offline  
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