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Discussion Starter · #1 · (Edited)
2013 Impala LT, V6, Flex Fuel

I'm looking to replace the metal PVC Valve (the one with the 2 holes that tend to clog with carbon), but am uncertain where it is located. The new part I have is "Standard Ignition V518 PCV".

I was hoping to find a picture/video online showing the exact location of this item, but haven't found a thing. Even an engine parts diagram would be helpful, but again can't seem to locate what I'm looking for.

From the information I've gathered the valve is near the back of the engine.

With the plastic engine cover removed I could see that there is a fitting going into the rear valve cover toward the right hand side that makes me guess that this is what I'm looking for.
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If this is in fact the correct location I see that there is a plastic fitting that "clips" onto the valve. Is a screwdriver the best means to dislodge the connector from the valve? I'm really hoping not to break anything.

Any advice in helping me complete this task is appreciated!
 

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Sorry, no pics, but yes, you've probably located the pcv "barb". It's back behind the throttle body inserted into the rear cam cover with a vacuum hose running from it to its vacuum port on the rear of the intake manifold. Iirc, I disengaged/released the hose clips by hand using my fingers? On 1 of my 3.6's, the barb pulled/twisted out by hand. On the other, I had to use slip-joint pliers to twist and pull it out. If plugged, it's probably plugged with a gooey oily gel. You can just clean the 3 holes out and replace as there are no "innards" in the barb/pipe. Or do as I did, I drilled the larger single hole out to 7/64" and the 2 smaller holes out to 5/64".
 

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I believe the PCV barb is on the intake manifold below and behind the air inlet tube, between the air inlet tube and the left fender. The photo below shows the barb with the PCV hose removed. Hope this helps.

 
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Discussion Starter · #4 ·
Thank you both for the replies! This will be a task I tackle this weekend and will be sure to share the results. I did get a brand new valve and drilled the holes bigger to the sizes as recommended.

Stay tuned!...…...
 

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Mine wouldn't budge when I tried pulling it from above on a cold engine. I now warm it up and it pops right out. If you still have trouble disconnect the plug wires back there. This makes enough space to use the claw end of a crowbar to pry up on the little ridge.
 

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Discussion Starter · #7 ·
Mission Accomplished!!

Once I managed to get the clip undone of the fitting that houses the PCV I ended up using a long needle nose pliers with a 90 degree bend to rock the PCV out of the cam cover.

With such a tight fit and not much room for ones hand, putting the new bugger back in where it belonged was certainly more difficult. I actually had to "tap" it in.

I also pulled off the intake tube and cleaned out all the oil that was trapped inside the ridges of the tube.

Replaced the dirty air filter and cleaned the MAPP Sensor off with appropriate cleaner.

With the enlarged holes drilled into the PCV valve hopefully this will eliminate the need to do the job again for quite some time!

And hopefully this post will help someone else having the same issue that these badly designed parts have caused.

Thanks to all who have contributed to the post!

162302
 

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I believe the PCV barb is on the intake manifold below and behind the air inlet tube, between the air inlet tube and the left fender. The photo below shows the barb with the PCV hose removed. Hope this helps.

New to the forum here. I have same 2013 impala with the 3.6 and the pcv valve I have is NOT like in this pic here. I have a plastic with an angle (standard part #v456) pcv valve. Which by the way does not rattle at all (new out of the box) any thoughts where this one is located, and why does a new one not rattle??
 

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Sorry, no pics, but yes, you've probably located the pcv "barb". It's back behind the throttle body inserted into the rear cam cover with a vacuum hose running from it to its vacuum port on the rear of the intake manifold. Iirc, I disengaged/released the hose clips by hand using my fingers? On 1 of my 3.6's, the barb pulled/twisted out by hand. On the other, I had to use slip-joint pliers to twist and pull it out. If plugged, it's probably plugged with a gooey oily gel. You can just clean the 3 holes out and replace as there're are no "innards" in the barb/pipe. Or do as I did, I drilled the larger single hole out to 7/64" and the 2 smaller holes out to 5/64".
New here to this forum, but I also have a 2013 impala with the 3.6. When doing a pcv parts search two very different looking pcv valve come up. One is the traditional looking metal stud type and the other is a black plastic angled one, both are made by standard. As per standard's website they both fit my car. Two pcv valves on this engine?? Also the new new valve I got right out of the box doesn't rattle???
 

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New here to this forum, but I also have a 2013 impala with the 3.6. When doing a pcv parts search two very different looking pcv valve come up. One is the traditional looking metal stud type and the other is a black plastic angled one, both are made by standard. As per standard's website they both fit my car. Two pcv valves on this engine?? Also the new new valve I got right out of the box doesn't rattle???
I only know of the straight metal pcv barb I described and shown in the above pics? Can you post a pic of the black plastic angled 1?
 

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Here is the angled pcv. And is doesn't rattle, defective??

The valve / fitting does not have an internal, spring-loaded pintle to shut off air flow during a backfire.

It had several holes in the non-barbed end to allow airflow, to remove exhaust gases. The plastic valve is known to “gunk-up” at the end, reducing the flow. Some have posted that they have enlarged the holes in an attempt to prevent the clogging.
 

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Dunno the location of the black plastic angled pcv valve/barb/pipe. I've never seen it underhood on my '12/'13/'16 Limited's. I wonder if it's for a different application? Do the ends have small holes similar to the metal barb?
 

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Thanks. I have located the pcv valve on my impala and visually verified what the correct one is. Please confirm this so I don't think I'm crazy here......, when inspecting a pcv valve if it rattles when shaken = working properly. If it doesn't rattle = defective. Correct? If this is correct, then when I bought a new one, right out of the box why doesn't rattle? Have pcv valves changed ?
 

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Thanks. I have located the pcv valve on my impala and visually verified what the correct one is. Please confirm this so I don't think I'm crazy here......, when inspecting a pcv valve if it rattles when shaken = working properly. If it doesn't rattle = defective. Correct? If this is correct, then when I bought a new one, right out of the box why doesn't rattle? Have pcv valves changed ?
The plastic angled piece you shown is the fresh air intake tube connection on the right side/front valve cover. As for pcv valve's, they for the most part no longer exist. They have been replaced by a fixed orifice and do not rattle and the 3.6 L engines use an orifice instead of a valve located in the back of the left side/rear valve cover.

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Thanks for the info. Just to confirm, you are saying that the pcv valve no longer rattles But they are removable and can be changed, correct? I have located it on the right side of the engine.
Yes, or if plugged, you can just clean out the 3 holes with a piece of wire and reinstall.
 

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Need to replace o2 sensor upstream bank 1 (against the firewall ). Put the car on a lift it's a really tight space and it's high up on the exhaust manifold can't get enough torque on it to break it loose. Trying to get to it from the the top of the engine is almost impossible. Any advice would be great. Hmmm,.... loosen or remove exhaust pipe from up underneath?
 
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