jeep cj8 sputtering - JeepForum.com

Reply
 
LinkBack Thread Tools
post #1 of 19 Old 11-10-2011, 03:17 AM Thread Starter
jeep670
Registered User
1982 CJ8 
 
Join Date: Nov 2011
Posts: 81
jeep cj8 sputtering

I have a 1982 cj8 an it just started to sputter i changed the plugs an was wondering if it could be the ignition module or a bad coil? Help please

jeep670 is offline  
Sponsored Links
Advertisement
 
post #2 of 19 Old 11-10-2011, 01:26 PM
ejeeperguy
Registered User
1982 CJ7 
 
Join Date: May 2011
Location: Providence
Posts: 640
The ign mod going bad will act like it is over heated and then awhile later it will work fine for awhile then act up again.For the price of a new coil can't hurt to try .autozone was about 25bcks.
ejeeperguy is offline  
post #3 of 19 Old 11-10-2011, 01:57 PM
addicted2dunes
Registered User
1981 CJ8 
 
Join Date: Jan 2006
Location: Orcutt
Posts: 872
Does it do it when it's hot, cold, or all the time? Fuel filter? Plugged jets in the carb?

Cameron Gunlock
1981 CJ8 -
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
http://www.facebook.com/pages/Central-Coast-Krawlers/139075302856004
addicted2dunes is offline  
post #4 of 19 Old 11-10-2011, 02:51 PM Thread Starter
jeep670
Registered User
1982 CJ8 
 
Join Date: Nov 2011
Posts: 81
I just had the carb rebuilt so i know the sputtering can't be from the carb..an yeah it sputters all the time.
jeep670 is offline  
post #5 of 19 Old 11-10-2011, 03:28 PM
addicted2dunes
Registered User
1981 CJ8 
 
Join Date: Jan 2006
Location: Orcutt
Posts: 872
Fuel filter plugged?

Cameron Gunlock
1981 CJ8 -
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
http://www.facebook.com/pages/Central-Coast-Krawlers/139075302856004
addicted2dunes is offline  
post #6 of 19 Old 11-10-2011, 05:07 PM Thread Starter
jeep670
Registered User
1982 CJ8 
 
Join Date: Nov 2011
Posts: 81
I replace the fuel filter already an it still sputters waiting for my ignition module an msd coil to come in the mail an hope it fixes the problem
jeep670 is offline  
post #7 of 19 Old 11-10-2011, 05:22 PM
addicted2dunes
Registered User
1981 CJ8 
 
Join Date: Jan 2006
Location: Orcutt
Posts: 872
I wonder if your timing got bumped a little bit, did you try to time it first?

Cameron Gunlock
1981 CJ8 -
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
http://www.facebook.com/pages/Central-Coast-Krawlers/139075302856004
addicted2dunes is offline  
post #8 of 19 Old 11-10-2011, 05:53 PM
lucdog
Registered User
1980 CJ5 
 
Join Date: Jul 2006
Posts: 8,781
Welcome to the best Jeep spot on the internet, that being said, fill out your profile. You didn't tell us what carburetor you have. Have you asked the place/person who did the rebuild about this, what did they say? Do you trust them to do a good job? Did it sputter before the rebuild? How long has it been since it was rebuilt?

On edit, you said, "I just had the carb rebuilt so i know the sputtering can't be from the carb..an yeah it sputters all the time" Just because they rebuilt it, doesn't meen it was done correctly.


Bill

1957 WILLYS pickup,
1973 J 4000,
1978 CJ7 DD.
1979 CJ7 360, TH400/Quadratrac.
1979 J20
1980 CJ5 trail Jeep.
1983 CJ7
1989 YJ the CJ to YJ.
lucdog is offline  
post #9 of 19 Old 11-10-2011, 06:09 PM
Hurricane4
Senior Member
 
Join Date: Jun 2010
Posts: 906
X2 on what lucdog said. We need additional info on your Jeep.

BTW - I am experiencing a similar problem with my CJ7.

The unbelievable we can do immediately . . . the impossible just takes a little longer.
Hurricane4 is offline  
post #10 of 19 Old 11-10-2011, 06:44 PM Thread Starter
jeep670
Registered User
1982 CJ8 
 
Join Date: Nov 2011
Posts: 81
I have a 1982 cj8 scrambler an with the original motor..i had the motor overhauled a few years ago.an i just rebuilt my stock carter carb a few weeks ago..it started to sputter before i got the carb overhauled an still sputters after it was overhauled..an changed the spark plugs an fuel filter too but made no difference..any suggestions?
jeep670 is offline  
post #11 of 19 Old 11-10-2011, 07:14 PM
lucdog
Registered User
1980 CJ5 
 
Join Date: Jul 2006
Posts: 8,781
Quote:
Originally Posted by jeep670
I have a 1982 cj8 scrambler an with the original motor..i had the motor overhauled a few years ago.an i just rebuilt my stock carter carb a few weeks ago..it started to sputter before i got the carb overhauled an still sputters after it was overhauled..an changed the spark plugs an fuel filter too but made no difference..any suggestions?
Sorry, I still have more questions. When you say "all the time" does this meen at half throttle in any certain gear? Or just idleing?

This is what I want to here. Ok Lucdog, when I start it in the morning, my Jeep runs great. After it warms up for a couple minutes it starts to sputter/ and doesn't sound right. As I'm driving down the road, it doesn't seem like it wants to go/ or its runs great.
I haven't changed anything since the rebuild, just the spark plugs, and the carberator .

BTW, it still has all the pollution stuff.

Get the idea. I not trying to be a smart a$$. We Need more info.

Bill

1957 WILLYS pickup,
1973 J 4000,
1978 CJ7 DD.
1979 CJ7 360, TH400/Quadratrac.
1979 J20
1980 CJ5 trail Jeep.
1983 CJ7
1989 YJ the CJ to YJ.
lucdog is offline  
post #12 of 19 Old 11-10-2011, 08:32 PM Thread Starter
jeep670
Registered User
1982 CJ8 
 
Join Date: Nov 2011
Posts: 81
Okay..when i start the engine it sounds like its misfiring then once i get it going it would start to sputter an i would lose power ..when once the engine is really hot it would stop sputtering then once i pass 3000rpm it would start to sputter
jeep670 is offline  
post #13 of 19 Old 11-10-2011, 09:30 PM
lucdog
Registered User
1980 CJ5 
 
Join Date: Jul 2006
Posts: 8,781
Quote:
Originally Posted by jeep670
Okay..when i start the engine it sounds like its misfiring then once i get it going it would start to sputter an i would lose power ..when once the engine is really hot it would stop sputtering then once i pass 3000rpm it would start to sputter


So it idles, just misses like its only hitting on 4 or 5 cylinders.

The first thing I would check is for vaccume leaks. I normally use a piece of hose to my ear and plug the other. With the engine running use the free end and check all the lines, the intake manifold where it meets the block, the charcoal canister, (by the firewall on the drivers side, looked like a coffee can) and around the carb. Listen for hissing or sucking air.

With the engine still running, and with a really well insulated pliers, a thick rubber glove would be good to. Rubber sole shoes and not touching the body also help from getting shocked. Pull off a plug wire at the plug, listen for any change in the engine. Do all 6 one at a time. They make a special tool for this, its not very expensive. Don't pull from the wire, pull from the boot.

With the engine off,
Back off the screws holding the distributor cap, (they don't come all the way out). Look inside the cap for black lines also check the silver or gold color terminals for corrosion.

A bad fuel pump, and corroded lines or pin holes in the line can also cause problems like this. A fuel pump needs to pump a given amount of gas in a given amount of time. The pump, to me is the most likley problem.

This is not something to just throw new parts at. $100 could easily be spent, and not solve the problem.

Everything I've written is free, except the fuel pump.

Bill

1957 WILLYS pickup,
1973 J 4000,
1978 CJ7 DD.
1979 CJ7 360, TH400/Quadratrac.
1979 J20
1980 CJ5 trail Jeep.
1983 CJ7
1989 YJ the CJ to YJ.
lucdog is offline  
post #14 of 19 Old 11-11-2011, 12:49 AM Thread Starter
jeep670
Registered User
1982 CJ8 
 
Join Date: Nov 2011
Posts: 81
Thank you so much for your help..
jeep670 is offline  
post #15 of 19 Old 11-16-2011, 03:49 AM Thread Starter
jeep670
Registered User
1982 CJ8 
 
Join Date: Nov 2011
Posts: 81
is it most likely that my fuel pump is really bad if its sputtering..it some times would stall or sputter really bad an it would lose power... i got a1982 cj8 with the the stock motor an headers..
jeep670 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