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Old 03-18-2014, 01:33 PM   #1
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Valve cover

So i recently changed my valve cover gasket on my 05 4.0, but i have oil coming from the 1 hose from the top of the valve cover. I know one is the pcv valve, but what is the other? Also, how do i get them off? I dont want to pull on it and break it off, i'm just not sure if there is a trick to getting them off. Thanks
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Old 03-18-2014, 01:40 PM   #2
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Try spraying them really good with pb blaster and heat then up a little to soften the rubber.

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Old 03-18-2014, 01:45 PM   #3
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The hose will just pop off then? What about where it connects to the actual valve cover?
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Old 03-19-2014, 10:11 AM   #4
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Bump?
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Old 03-19-2014, 10:25 AM   #5
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It is a snug fit for sure. The front one on mine was broken already, but I was able to get them off while warm, by wiggling upward. Cleaning them first will give you a better grip.
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Old 03-19-2014, 10:55 AM   #6
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replace the grommets and the nipples. Both harden and become brittle with age. The dealer is the only place I could find them. I don't think either of the them are PCV "valves." On the 2003, they are just straight pass through nipples. The rear one sucks crankcase vapors into the intake manifold to be burned in the combustion chamber. The one it he front allows filtered air to be drawn into the valve cover so that there isn't a high vacuum in the crankcase.
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Old 03-19-2014, 01:49 PM   #7
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I don't know about the grommets but AutoZone carries the breather elbows in their HELP! section. As stated above they are not PCV valves.
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Old 03-19-2014, 02:12 PM   #8
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Quote:
Originally Posted by All Terrain TJ View Post
I don't know about the grommets but AutoZone carries the breather elbows in their HELP! section. As stated above they are not PCV valves.
I wish I knew about the autozone availability. When I was doing my valve cover gasket I broke both nipples and the plastic pipe to the manifold trying to remove the nipples from the grommets. The nipples just crumbled in my hands.
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Old 03-22-2014, 12:01 AM   #9
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Thanks!
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Old 03-22-2014, 07:24 AM   #10
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Advance, Autozone and NAPA all have them in stock, along with the grommets. I think Carquest has one but not the other.

My front one came off easy the back one broke, and the rear tube from the manifold to the rear valve also broke, and that is only available at the dealer. (58.00)
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Old 03-22-2014, 07:45 AM   #11
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When I was doing my valve cover gasket I broke both nipples and the plastic pipe to the manifold trying to remove the nipples from the grommets. The nipples just crumbled in my hands.thanks
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Old 03-22-2014, 07:47 AM   #12
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Quote:
Originally Posted by NC Bear View Post
Advance, Autozone and NAPA all have them in stock, along with the grommets. I think Carquest has one but not the other.

My front one came off easy the back one broke, and the rear tube from the manifold to the rear valve also broke, and that is only available at the dealer. (58.00)
If you ask the guy at the counter for a PCV valve he'll tell you they don't have them. If you don't know where it is ask to see their HELP! section.
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Old 03-22-2014, 08:35 AM   #13
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Quote:
Originally Posted by All Terrain TJ View Post
If you ask the guy at the counter for a PCV valve he'll tell you they don't have them. If you don't know where it is ask to see their HELP! section.
yea, I know about the elbows, I was speaking of the tube that runs from the rear elbow to the manifold that is 58.00 and only available from the dealer...

oh yea, I meant OReiley's not Carquest. But none the less they (elbows) are available in the Help section at the above listed box stores.
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Old 03-22-2014, 09:04 AM   #14
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Not to take the thread, but my '06 valve cover was leaking, so I tightened the nuts. Most were really loose. The one in the far left (driver side) has something over it, and I'm not sure how to remove it to tighten it to ensure they all are torqued right. Can someone help me out? Thanks!
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Old 03-22-2014, 11:05 AM   #15
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Quote:
Originally Posted by NC Bear View Post

yea, I know about the elbows, I was speaking of the tube that runs from the rear elbow to the manifold that is 58.00 and only available from the dealer...
I figured, I posted for the benefit of others that may not have.
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Old 03-22-2014, 02:19 PM   #16
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Quote:
Originally Posted by Verf View Post
Not to take the thread, but my '06 valve cover was leaking, so I tightened the nuts. Most were really loose. The one in the far left (driver side) has something over it, and I'm not sure how to remove it to tighten it to ensure they all are torqued right. Can someone help me out? Thanks!
You'll probably need a swivel joint to get a socket on it. Is it the plastic bridge piece with all the wiring in it that's blocking it?
If so, it's pretty easy to take off. Get a small screw driver and stick it into the slots where the tabs connect and pull out each tab. There's probably 4-5. I can't remember how many off the top of my head. See the picture below and you'll know what I mean. Then there is one plastic bolt that has a pin part that must be pushed in to remove the loom. Also. There's one nut over the stud that holds the plastic piece down that must be removed. See the second picture and you'll understand my description as well.
After the plastic loom piece is removed then you may have to unplug some of the wiring to make it "loose" enough to pull it up out of the way and zip tie it to something.

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My descriptions may have been confusing so feel free to ask any questions or for more pictures if you need them
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Old 03-22-2014, 02:49 PM   #17
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Quote:
Originally Posted by All Terrain TJ View Post
I figured, I posted for the benefit of others that may not have.
no worries my brother....
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Old 03-22-2014, 07:47 PM   #18
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Quote:
Originally Posted by elite56 View Post
You'll probably need a swivel joint to get a socket on it. Is it the plastic bridge piece with all the wiring in it that's blocking it? If so, it's pretty easy to take off. Get a small screw driver and stick it into the slots where the tabs connect and pull out each tab. There's probably 4-5. I can't remember how many off the top of my head. See the picture below and you'll know what I mean. Then there is one plastic bolt that has a pin part that must be pushed in to remove the loom. Also. There's one nut over the stud that holds the plastic piece down that must be removed. See the second picture and you'll understand my description as well. After the plastic loom piece is removed then you may have to unplug some of the wiring to make it "loose" enough to pull it up out of the way and zip tie it to something. My descriptions may have been confusing so feel free to ask any questions or for more pictures if you need them
Exactly it! Thank you! Great write up, I was able to follow, pics did help tho, but I was looking under the hood as I read along! Thank you!
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Old 03-22-2014, 08:21 PM   #19
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Quote:
Originally Posted by Verf View Post

Exactly it! Thank you! Great write up, I was able to follow, pics did help tho, but I was looking under the hood as I read along! Thank you!
No problem. I had to figure it out the hard way myself a few months ago and I almost just broke the plastic loom piece because I was so mad at it.
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Old 09-08-2014, 10:33 AM   #20
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Diagram with explanation
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Old 05-24-2015, 07:37 AM   #21
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Plastic wiring bridge

I'm new to the forum and new jeep owner (2006 Rubicon). I just finished replacing the valve cover and thought a few pictures of the wiring bridge could help someone else. The clip on the back foot needs to be separated (pushed apart) to be removed.
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Old 06-26-2016, 04:52 PM   #22
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I cut the front right bracket off the bridge for the next time I pull the valve cover. That is a pita to remove with the three mount points.
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Old 06-26-2016, 05:55 PM   #23
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On the front one i just took it out, hack sawed it off and put a small filter on it. The port on the intake tube i capped off with a vacuum cap. Keeps the oil from condensing in the intake tube.

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