Pcv valve

[ShadowsPapa]

If an actual recall and not a TSB or other service instruction, it should be covered at no cost to you.

As to when to change the PCV valve? There is no reason to change early from what the scheduled maintenance interval tables call out unless there is a reasonable belief the PCV valve currently installed is defective.

100,000 miles or 10 years.
Frankly, I'd cut that by 1/3 at least because if it's a true valve, it has a spring and shuttle. Springs get weak, shuttles collect crud and stop sealing or moving properly.

I want to get a new one in my hands and compare the operation to what I'm used to - and put it through a couple of tests like we used to do.

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[Hootbro]

I want to get a new one in my hands and compare the operation to what I'm used to - and put it through a couple of tests like we used to do.

Looks like it has a standard check valve poppet design. Found this on a 1st Gen valve.:

https://bobistheoilguy.com/forums/threads/new-pcv-valve-in-the-durango-3-6l.374501/

 

[ShadowsPapa]

Looks like it has a standard check valve poppet design. Found this on a 1st Gen valve.:

https://bobistheoilguy.com/forums/threads/new-pcv-valve-in-the-durango-3-6l.374501/

Standard valve design with a cyclone to remove oil from the air stream.
Makes sense.
If the thing gets cruddy or worn and stops working like it should, then it won't shut down the air flow under high vacuum conditions.
If a spring breaks from corrosion or wear, then it will shut the opening down too much under light vacuum conditions, not evacuating the crankcase.
If it gets cruddy or sticky, it might stay open allowing too much flow.
Maybe in the location these are in and under the conditions they operate in, 100,000 miles is ok, but that seems a bit out there if I try to apply today and yesterday together.

 

[Hootbro]

Standard valve design with a cyclone to remove oil from the air stream.
Makes sense.
If the thing gets cruddy or worn and stops working like it should, then it won't shut down the air flow under high vacuum conditions.
If a spring breaks from corrosion or wear, then it will shut the opening down too much under light vacuum conditions, not evacuating the crankcase.
If it gets cruddy or sticky, it might stay open allowing too much flow.
Maybe in the location these are in and under the conditions they operate in, 100,000 miles is ok, but that seems a bit out there if I try to apply today and yesterday together.

Great, now you are making me paranoid and want to change mine. ?

 

[ShadowsPapa]

I have to admit I have not looked too hard at the engine, components, etc. but @ShadowsPapa isn't this the PCV line? Maybe I'm thinking of something different but I have consistent oil here as well and pretty sure I have seen many others on the forum talking about oil coming from here.

#1 being the PCV line, #3 being the makeup air going into the crankcase if I'm looking at it correctly (power out here, storms, dark, no lighting, things on minimal battery power)

What some are seeing is not really a leak per se, but a wicking of a tiny bit of oil, collecting dust, making it look really bad and like a lot. No, it really shouldn't be there, but how precise is the surfaces where the o-ring seats, how much pressure is there against the o-ring and so on. Maybe they didn't see it as a critical seal area?

Either way, under typical conditions, there should be low pressure in the lines - lower than atmospheric. Not always, but typically.
The line for makeup air should be seeing a lower crankcase pressure pulling air from the tube shortly after the air filter - so clean air gets into the crankcase. There shouldn't be any pressure higher than atmospheric.
The PCV line itself should almost always see a vacuum in it - or at least lower than atmospheric pressure. The point is the vacuum or lower pressure of the intake should be pulling air from the crankcase - the crankcase pressure should never exceed the intake pressure.
All that being said - I see these as possibilities -
For some reason crankcase pressure is exceeding the pressure in the filtered air tube - makeup air (if the 1/1000 of a drop of oil is at the makeup air line fitting)
For some reason crankcase pressure is exceeding the pressure in the intake - and PCV line, (if the 1/1000 of a drop of oil is at the PCV line to intake manifold fitting).
Is the PCV valve itself malfunctioning?
Is the driver forcing quick downshifts dropping intake manifold pressures abnormally low for a long period?
I've not seen such dusting around the sealed areas on any of our Jeeps - WK/WK2, or JT, including my 2020 I traded at 27,000 miles.
My current JT has over 21,000 miles..
Sorry, still can't lean over fenders and sharp areas for a while for good pics, but mine is dry as can be, everywhere -

 

[Lunentucker]

View attachment MC-10227734-9999.pdf

 

[Lunentucker]

I just replaced the PCV Valve in 2020 Jeep Gladiator Rubicon. It took 10 min.

Open Hood
Lay Thick Blanket over Air Filter area
Step up on bumper and kneeled on blanket comfy.
Undo Oil Line, press and pull off.
Took buggy cord, and hooked it out of the way
PCV Valve is passenger side back of engine, just to right and below fuse box.
Took long screwdriver, and used it to push tab back, and turned 30 to 40 degrees clock wise,
Wiggle it off, and replace.

Very simple. Used MOPAR part from dealer. The PCV Valve hole was smaller then original one like in the discussion. $37 bucks in California. Riley’s had one different name $25. I just went to dealer.

Interesting, because the updated PCV Valve seems to retail closer to $100 at the online dealers like @AllMoparParts.com

68609110AA

https://parts.allmoparparts.com/oem-parts/mopar-valve-68609110aa

See TSB I just posted above.

 

[Stan H]

Well Acco

If an actual recall and not a TSB or other service instruction, it should be covered at no cost to you.

As to when to change the PCV valve? There is no reason to change early from what the scheduled maintenance interval tables call out unless there is a reasonable belief the PCV valve currently installed is defective.

Well, according to Jeeps Maintenance schedule for a 2021 3.6 L. It says : inspect and replace "if necessary "
Mileage 100,000 ..
Love the ambiguous wording .
So I got 91,953 miles so getting close to a "if necessary "

Reminds of a site I was on once had to give a Orientation training . I ask the guy his first name He says "Dallas" , I said no I don't want to know where your from.
He says" No that's my name" I said "okay I need your last name" .
He says "Necessary"
I looked him sorta peaved and said "yes this is Necessary".
The Dude says no you don't understand that's my Name " Dallas Necessary " ???
I cracked up.. still crack a smile thinking about it.

 

[Hootbro]

Interesting, because the updated PCV Valve seems to retail closer to $100 at the online dealers like @AllMoparParts.com

68609110AA

https://parts.allmoparparts.com/oem-parts/mopar-valve-68609110aa

See TSB I just posted above.

Funny thing is if your were to look up the current PCV valve on the MOPAR part websites, it will list the legacy 68210345AC part number. For whatever reason, MOPAR is not listing that new TSB part number as a superseding one.

Nobody seems to know what the technical difference is between the old and new TSB one.

 

[Lunentucker]

Funny thing is if your were to look up the current PCV valve on the MOPAR part websites, it will list the legacy 68210345AC part number. For whatever reason, MOPAR is not listing that new TSB part number as a superseding one.

Nobody seems to know what the technical difference is between the old and new TSB one.

Yes, I saw that in a thread on Wrangler forums in which @AllMoparParts.com said essentially the same thing.
https://www.jlwranglerforums.com/forum/threads/new-version-of-pcv.113454/post-2363928

 

[Lunentucker]

Side by side - old and new
(also, prison vs no prison)

 

[chorky]

f oil is at the makeup air line fitting)
For some reason crankcase pressure is exceeding the pressure in the intake - and PCV line, (if the 1/1000 of a drop of oil is at the PCV line to intake manifold fitting).
Is the PCV valve itself malfunctioning?
Is the driver forcing quick downshifts dropping intake manifold pressures abnormally low for a long period?
I've not seen such dusting around the sealed areas on any of our Jeeps - WK/WK2, or JT, including my 2020 I traded at 27,000 miles.
My current JT has over 21,000 miles..
Sorry, still can't lean over fenders and sharp areas for a while for good pics,

I meant to reference the discussion of oil inside the PVC hose and going into the intake just downstream from the air filter. I'll see if I can snap a pic of mine later today, but I know it was a discussion here in the past.

View attachment MC-10227734-9999.pdf

Man that is one intrusive TSB. talk about $$$

 

[Lunentucker]

I meant to reference the discussion of oil inside the PVC hose and going into the intake just downstream from the air filter. I'll see if I can snap a pic of mine later today, but I know it was a discussion here in the past.



Man that is one intrusive TSB. talk about $$$

No doubt. I was expecting "Remove old PCV Valve. Install new PCV Valve" ?

 

[chorky]

No doubt. I was expecting "Remove old PCV Valve. Install new PCV Valve" ?

At that cost it should be covered for free IMO especially if it is due to a design flaw.

 

[ShadowsPapa]

I meant to reference the discussion of oil inside the PVC hose and going into the intake just downstream from the air filter. I'll see if I can snap a pic of mine later today, but I know it was a discussion here in the past.

I'll pull mine off and look. There should be no oil there.

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