Jeep Wrangler Forum - Reply to Topic
Jeep Wrangler Forum

Go Back   Jeep Wrangler Forum > YJ Jeep Wrangler Forum > YJ Tech Forum > 4.0 YJ project.

Join Wrangler Forum Today


Thread: 4.0 YJ project. Reply to Thread
Title:
  
Message:
Post Icons
You may choose an icon for your message from the following list:
 

Register Now

In order to be able to post messages on the Jeep Wrangler Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
If you do not want to register, fill this field only and the name will be used as user name for your post.
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

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.



Additional Options
Miscellaneous Options

Topic Review (Newest First)
08-15-2011 11:30 PM
jaguar1688
4.0 YJ project.

Hello everyone, tackling this 92 YJ I picked up for 800$. 4.0 with 115k on it, 5spd. so far a lot of rust cut out, welding in new rocker panels and front floor pans lol learning as I go, but a success (its been garaged by the last owner for 5 years).
*Had a question on anyone familiar with the 4.0, It runs and Idle's well at low RPM, however when you let it run for a while and try to give it throttle, even close to WOT it only revs to 3...3500 RPMS. It sounds strong and does not backfire or sputter but wont wind up. I have replaced plugs which were carbon fouled, and wires along with alternator. the exhaust smoke is very light blue to faint black with rev, nothing too noticeable close to normal looking, it does smell "gassy" though. Slight click under valve cover around cylinder one after about 10 mins of running, not extreme tho.. It has the original fuel injectors which looked like they had issues (from research). I also have a little gas hint in the oil, I'm thinking a few injectors are stuck open (not responding to increased throttle at a point) but would'nt I notice in the idle? maybe the flooding is causing some fuel to dump down the cylinder into the oil, thus thinning it and giving me a little blue and black smoke? ANy advice would help, thinking about picking up injectors but wanted some 2 c 1st.. thank you

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


All times are GMT -5. The time now is 08:28 PM.



Jeep®, Wrangler, Liberty, Wagoneer, Cherokee, and Grand Cherokee are copyrighted and trademarked to Chrysler Motors LLC.
Wranglerforum.com is not in any way associated with the Chrysler Motors LLC