PCV help!!!! - Jeep Wrangler Forum
Jeep Wrangler Forum

Go Back   Jeep Wrangler Forum > YJ Jeep Wrangler Forum > YJ Tech Forum

Join Wrangler Forum Today


Reply
 
Thread Tools

Please support our sponsors and let them know you heard about them on WranglerForum.com
Old 11-17-2007, 04:32 PM   #1
Jeeper
 
Join Date: Jul 2007
Location: San Diego
Posts: 24
PCV help!!!!

I have a 1990 Wrangler, I6 258 and I live in California so it has a million vacuum lines on it !!! Anywho...I am getting oil leaking out of the oil filler cap on the valve cover. I've removed the PCV solenoid (since it was supposed to be removed in 1994 as per a vehicle recall) and I've replaced the PCV valve. According to my Chilton's manual, if I take off the PCV valve and put my finger over it, should be good suction and there is. Next step says to remove crank case intake air cleaner and cover the opening in the rocker cover with a stiff piece of paper and it should be sucked down with considerable force. This is not happening, in fact the opposite is happening and oil is getting in my breather assembly. Then it tells me to remove the carburetor and run a hand drill through the passages to dislodge any debris. I did this and after putting it all back together, still does the same thing. Anyone have any suggestions?? I also noticed when I had the carb off, down in the intake manifold there is a round piece of metal with a bunch of little pieces of metal sticking up off of it (can't think of any other way to describe it...accept maybe a steel porcupine?? LOL). Anyway, about six or seven of those little metal rods have broken off and are nowhere in sight. Any help on that one?? Thanks!!

Soup

soupy8728 is offline   Quote Quick Reply
Old 11-17-2007, 05:26 PM   #2
Jeeper
 
Join Date: Sep 2007
Posts: 268
i talked to a jeep tech and he said that the pcv valves on these HAVE to be the plastic ones that came from the factory and the metal ones wont work....wont solve your prob. but u can check ur pcv valve

__________________
Firefighter/Paramedic Local 1555

1989 Wrangler 5.5" Lift 33"s - SOLD
1997 Wrangler 6" Lift 35"s - SOLD
2008 Wrangler 2.5" Lift 35"s - SOLD
Justin is offline   Quote Quick Reply
Old 11-17-2007, 07:05 PM   #3
Jeeper
 
Join Date: Jul 2007
Location: San Diego
Posts: 24
I don't think the PCV valve is the problem. It has good suction like it's supposed to. How does the air get "sucked" into the valve cover from the breather assembly? I know it goes through the air filter and the small filter inside the breather assembly but mine isn't doing that.
soupy8728 is offline   Quote Quick Reply
Old 11-19-2007, 04:59 PM   #4
Newb
 
Join Date: Oct 2007
Location: san antonio tx
Posts: 10
I hope some one helps you as i have the same problem with my 90 6-258
I have changed the pcv no help, checked routing of vac lines.
Timed the engine, it seems there is blow by, but it does not smoke.I am going to do a compression ck after dec. 05-2007. that is when the work is finished for the year. It runs good at 70 mph no problem, it has me baffeled. Good luck.
P S the carb. and head is overhauled, as like new
gcssr is offline   Quote Quick Reply
Old 11-19-2007, 10:13 PM   #5
Jeeper
 
Join Date: Jul 2007
Location: San Diego
Posts: 24
Someone told me to check the baffles inside of the valve cover. He said if they are all gunked up, it will cause this problem. Since there is no positive ventilation, pressure builds inside the crankcase and causes the gaskets to expand, as well as oil to be forced out of the oil fill cap. He is actually doing some carb work for me and as soon as he is done, I'm pulling the valve cover and cleaning it out really good. Hope this helps you.
soupy8728 is offline   Quote Quick Reply
Reply

Quick Reply
Message:
Options

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:
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.



Thread Tools

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 Off
Refbacks are Off




Download our Mobile App

» Network Links
»Jeep Parts
» Featured Product

All times are GMT -5. The time now is 04:49 AM.



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