Removing and Installing PCV Valve
JK Newbie
Joined: Jul 2011
Posts: 51
Likes: 0
From: Puyallup, Wa
Thanks Ronjenx for the pics, really helped locate my PCV. My experience with PCV valves is either they work or don't work. I pulled mine tonight and discovered the plunger moves and does not bind but it does not cut off the negative ventilation. I usually check this by sucking and blowing on one end, hope that comment does not come back to haunt me....beer 
. Anyhow, mine did not cut out but allowed ventilation both ways. I would assume that would mean it is bad, right?
. Anyhow, mine did not cut out but allowed ventilation both ways. I would assume that would mean it is bad, right?
Thread Starter
JK Jedi Master
Joined: Feb 2008
Posts: 12,907
Likes: 185
From: Maine
Thanks Ronjenx for the pics, really helped locate my PCV. My experience with PCV valves is either they work or don't work. I pulled mine tonight and discovered the plunger moves and does not bind but it does not cut off the negative ventilation. I usually check this by sucking and blowing on one end, hope that comment does not come back to haunt me....beer . Anyhow, mine did not cut out but allowed ventilation both ways. I would assume that would mean it is bad, right?
. Anyhow, mine did not cut out but allowed ventilation both ways. I would assume that would mean it is bad, right?Go here to see what's inside it:
https://www.jk-forum.com/forums/show...CV-Valve-Study
Last edited by ronjenx; Oct 14, 2011 at 07:20 PM.
JK Newbie
Joined: Oct 2008
Posts: 78
Likes: 0
From: Tampa, FL
Pita...
Wow! For such a little part, what a pain in the butt!!! I got it changed, but not before breaking about 10 zip ties, shredding my knuckles, and hitting my head on the hood a few times! I ended up just pulling it straight up with vice grips and finally got it out. It was easy to seat the new one with the socket trick that was recommended. Thanks guys!
Thread Starter
JK Jedi Master
Joined: Feb 2008
Posts: 12,907
Likes: 185
From: Maine
Wow! For such a little part, what a pain in the butt!!! I got it changed, but not before breaking about 10 zip ties, shredding my knuckles, and hitting my head on the hood a few times! I ended up just pulling it straight up with vice grips and finally got it out. It was easy to seat the new one with the socket trick that was recommended. Thanks guys!
The thing about prying with the pliers is, if the zip tie breaks, there would be no sudden knuckle-busting hand movement.
JK Enthusiast
Joined: Dec 2008
Posts: 121
Likes: 0
From: Amherstburg, Ontario
ronjenx, great right up
................just did mine and most of what you wrote worked like a charm..............zip ties broke but all in all the method is sound.
A few things I noticed about the valve:
It was slipping inside the rubber sleave that it has on it (old one) and a noticeable amount of oil around it. Could be the oil eating factor most talk about. I will see if that helps the issue by putting in a new one. There was oil residue in the hose so a least some oil has been getting through.
Many thanks again
Bob
................just did mine and most of what you wrote worked like a charm..............zip ties broke but all in all the method is sound.A few things I noticed about the valve:
It was slipping inside the rubber sleave that it has on it (old one) and a noticeable amount of oil around it. Could be the oil eating factor most talk about. I will see if that helps the issue by putting in a new one. There was oil residue in the hose so a least some oil has been getting through.
Many thanks again
Bob
JK Super Freak
Joined: Aug 2007
Posts: 1,448
Likes: 42
From: Danville, Indiana
Originally Posted by Marcsingrocks
this is 100% noobish behavior right here..... when do i know i need to change it? i am at 37k miles right now....