CCV valve replacement: Replacing CCV valve on Jeep Wrangler 

Cutting the gasket was a lifesaver, thank you man.

I have owned 5 jeeps with the 4.0 inline 6. They are one of the best engines ever built. I love seeing videos like this since with proper maintenance these engines can live well past. 300K miles. Love you channel, Keep up the good work :)

Working on a buddy's '03 Wrangler TJ, and this was the only video I could find that actually had the CCV instead of the PCV! Awesome tutorial, helped me out a ton after I destroyed the front elbow trying to get it out. Accidentally broke the crankcase to intake manifold breather tube while trying the replace the rubber fitting on it too. That was a PITA to find for the '03 but thankfully Amazon has it all.

Great content as we are sued to it but this was 6 years ago! I love when you specify the part numbers, that makes it so much easy to follow! Keep the great job!!

Thanks! Excellent tutorial- concise, clear, nice video quality, no babbling BS, part numbers. What more could a DIY’r want? A #1.

I was just looking at my 94 YJ and trying to decide the best way to pop those out, THANKS!!!!

Just a tip: I was having trouble getting the valve into the grommet. I heated the elbow valve with a hairdryer to get it to fit!

Thanks for the part numbers. Two auto part shops incorrectly gave me the back one instead of the front. And now I know that tonight instead of tomorrow night!

Great job on that. I destroyed mine taking it out - this was artfully done. Thanks.

Thanks for the excellent video. Great tips. I just replaced the old leaky one on my '01 wrangle. The grommet and elbow were super brittle. Cheers!

Thank you for this. I'm about to change the oil on my mom's 2001 Jeep Cherokee and I'm positive the have never been changed, so it's nice to see a how-to done very nicely. I had my reservations about trying at first but now I'm just ready to get it done

This is the best video I could find on replacing these valves. Thank you.

As usual, a job that is simple on most cars is a pain on the Jeep. My 2001 Of the many cars I have owned over 60 years of driving, my 2001 Grand Cherokee is the absolute worst car to work on. You did a great job and I thank you for the help!

Thank you for this video I was frustrated trying to remove the old part and all I needed was a new grommet! You saved me hours of frustration.

Super Super helpful!!!! Broke mine in process of changing gasket. Super awesome for leaving links in the description! Thank you so much

Please keep up the good work. Fantastic resource. Looking forward to doing a striker build on my XJ and learning from your videos along the way.

Thanks a lot for your video, it helped me a lot. Very clear and simple directions. 🤫 (I have tried many ways and even broke valve in the process of removing.) Please keep posting.

Thanks for the video! Just replaced my valves. My reason was actually because the hose going from the back valve to the manifold cracked, figured why I was in there, mind as well spend $25 and replace all the parts. I was getting some oil seepage onto the valve cover, so in the end it needed to be freshened up. For your viewers knowledge, I ordered the hose from my local auto store, got Dorman part #46006. This part actually doesn't fit the Wrangler, BUT, it'll work if all you need is the one hose leading to the manifold. It comes with two hoses taped together. The other hose (I believe for the MAP sensor) does not fit, I think it's intended for the Cherokee. I could have ordered the correct part from Chrysler, but I was looking at about twice the cost. 1995 Wrangler SE 4.0 liter I6.

Always reference back to your videos. thank you! this video shows the part numbers I needed also side note these do not fit on a plastic YJ Dorman cover I tried and broke a few times trying to make it work get the aluminum (2.5L on my YJ ) original hope this helps too. thanks again!

hello friend, excellent video has helped me a lot because I have to replace the pcv valves, the technique you used has been very good.... It took me a long time to find the washers in Santiago de Chile because here they sell everything separately and I found them on Amazon, I bought them at Dorman and they arrived very quickly... Best regards from Santiago de Chile... ATT: Jamie...

NAPA P/Ns if you don't want to deal with Autozone or Oriley's. Pretty sure the Napa parts are from Doorman as well except for the small orifice elbow part number which actually has a Chrysler Pentastar on it, whoda thunk it. Front Elbow (No Orifice)- NOE 6301078 Rear Elbow (Small Orifice)- CRB 29574 (the picture on the NAPA website doesn't represent what you actually get) Grommets- NOE 6301411

Good tip on grommet removal. Also, much thanks for part numbers!

Thank you very much for the Great and clear Vids. I have a jeep Cherokee Poineer 4.0 1987. vacuum pressure is low(13-14), the RPM is unsteady and won't shift gear when going uphill. I have changed air control sensor, spark plugs, and fuel filter. I could not find a leak using brake cleaner. took it to two mechanic shops and they had no clue what they were talking about. thanks again.

Wish you brought up something about the bushings. thank you for the video

Thanks buddy very good video!!!

Thanks for the video. I have a 94 and have subscribed to your channel. You have helped me with the valve cover gasket and now these pesky ccv's. Thanks again!!!

Terrific video and to the point with part numbers even!!!!!!!

great video! I like yours better than the other guys videos. They just kept breaking them and your way seems so simple. Doing mine tomorrow. Thanks

Thanks for the part numbers made it alot easier going into Advanced

good video showing relevant tricks how to get the valves out - am not sure about where the CCV and PCV valve are located in my 1998 XJ 4.0 - front and rear - same engine you have - thanks.

very informative and great job with part numbers. Now I only wish I had a wrangler instead of a Cherokee. lol but, I learned something either way. cheers!

Great removal, one tip, don't use oil or petroleum products to help seat the elbows into the rubber grommets; direct petroleum applications on the plastic and rubber will break down both causing premature failure and brittleness. petroleum eats rubber and plastic. Use slimy spit after chugging a pepsi.

What happens if these are not changed? Got a 2000TJ 152,000 miles and never replaced them in my 4.0L

Thanks for these tutorials; I’ve replaced nearly everything on an old family favorite. Having a tough time finding the location of the Canister Purge Valve on a 1995 YJ 4.0. It has stumped 3 good parts mechanics and my favorite mechanic, who looked for it with me under the hood, and then couldn’t locate it while on the lift doing a rear main seal job. Any help appreciated.

Thanks for another awesome video! I have an '88 YJ with the original Mopar Fuel Injection conversion kit installed. It is possible deteriorated PCV and CCV connections can cause emissions failures? Trying to find the source of my high Nox. It's frustrating because half the engine parts are from the '88 carbureted motor while the top half is mostly from what I think is the '91-95 engine setups. But not sure, one commenter below mentioned his '93 used a "twist lip PCV." I guess we'll find out. I purchased it with the kit, so Im sort of figuring it out as I go.

I can't believe how efficiently you removed the old valves. This is some kind of witchcraft, I'm sure.

Why would you need to change these connectors? What issues were you having?

So my rear PCV/CCV valve on my 2000 TJ is leaking oil all over my engine. My oil level is on par so it's not leaking too bad, and I put about 3 to 4 thousand miles on it a year. I have work I'm going to do in the Fall with my rad that has a patch job over a pinhose leak, and was hoping tob put this leak off too. Long story short. I was on a 300 mile road trip everything is fine, but all of a sudden my cruise control is out, just stopped working. Then it worked again, then stopped. Next thing I got the check engine light. So I pull over and look under the hood. It's dirty, but my only known issue is it revved high in park, and oil leaks from that valve. Not much I can do on a Sunday in the middle of nowhere so I push it 100 more miles. Fuel economy seemed to drop, other than that no problems. Good oil pressure, 210 degrees, RPMs not indicating an issue. In fact it sounded great. My bet is that valve trapped enough air in my engine to set off the check engine light. However, my question is do you know of any way that may correlate with my cruise control, or should I hastily be looking at my throttle? Or anything I'm not thinking about?

I bought a '94 GC 4.0L for my CJ7 years ago. I ran it with no problems for a couple years. I had the Hesco mpi kit already when I did the motor swap. The frame started rotting out so I pulled the motor and a bunch of other stuff and got rid of it. I replaced it with my YJ. One of the first things I put on the YJ was the mpi kit and the 4.0 valve cover. I just pulled the 4.2 out of the YJ and swapped in the same 4.0 that was in the CJ. For the 1st time, I looked inside the valve cover when I went to replace the CCV and elbow. I was surprised to see that they were both CCV elbows with the orifice. As far as I know the motor was completely untouched when I bought it. It ran perfectly fine on the CJ and the YJ so I'm wondering if it was supposed to be like that? I put a regular elbow in the front like most all of them are but I've wondered about that since I saw it

Wish mine went like this. Did this exact thing and the pcv and grommet starting coming off in pieces lol

THANK U SO MUCH FOR THIS!!!!!!

What about the part numbers for the hoses in case we break them? 94 YJ 4.0L here

The back little orifice to intake is a pcv valve. The front to airbox is ccv.

What would happen if you deleted the pcv elbow and instead ran two ccv valves? Essentially both with big holes. I feel the 4.0 needs all the help it can get

hey great video! doing mine now. quick question, should I be feeling any vacuum on the front elbow? I removed the hose but I don't feel any suction from the hose coming from the air filter or from out of the elbow. the back one has great vacuum coming from the intake.

Hey Jeep solid I know this is an old post but I’m trying to figure out why soon after I replaced my rubber grommets and pcv valves, my Jeep started up and died and hasn’t started in two weeks after? I have an 89 with a Weber carb, if you have any idea it would be awesome to know! Thank you and love the videos they have helped me a lot.

Solid info and job done!

Hi Dale, well not quite finished in my book. If you don't check that the front and rear air lines are clear you have wasted your time and money. Having worked on several Jeeps where the rear manifold vacuum air pipe connector has been plugged with oil and carbon deposits. Thus stopping any vacuum being created under the rocker valve cover. It pays to be thorough and pay attention to detail.

Love love love your videos. I recently purchased a 1993 Jeep Wrangler Sahara with the intention of learning how to fix everything I can on it. That being said I have a question. I recently changed my PCC valve. I too have two of them however the back one isn’t connected to anything. It basically has a rubber stopper on the end. Is this normal? Have you heard of this? Thanks for all your help!

okay, I might seem stupid but I am new to the jeep world and I have come into possession of a 1992 jeep wrangler yj 4.0L and the rear ccv valve is missing the hose. So my question is when i get the hose where does it lead too? the front one goes to the air box but what about the back one? I also have a few missing vacuum hoses and was wondering if there is a diagram somewhere that shows where all of the possible vacuum hoses are and where they lead too?

I broke the back house trying to remove it. Where to get a new hose?

I was told there are no valve in these like a pcv, these are just a tube that is hollow?

What’s happening...I have a 2001 WJ grand Cherokee 4.0 I have replaced the ccv and PCs and grommets...where does the hose in the rear connect to off the valve cover?? I am stumped cause I just don’t see where it is supposed to go? Please help it would be appreciated...thank you

The hose that connects to the front valve.. well mine broke and I dont know what to order. The parts stores only want to supply the hose for the rear. I need mine to go to the air intake . 95 zj

Hi Dale, I was watching some video's about PCV (front of the valve cover) and CCV (back of the valve cover near the firewall) I'm planning on adding an oil catch can on my 2001 4.0 TJ but the problem is, I can find a legit reason to put it on the hose of the PCV but also a good reason to put it on the hose of the CCV. Have you done any research on that, what would you do? Thanks mate and regards from the Netherlands 😉

so i have a question. i have a 91 wrangler with a 92 cherokee motor. 4.0 and after sitting for a few months it has developed smoking out of the ccv valve and is also smoking out of the dipstick. is this caused by bad ccv valves or worse. please let me know im at a stand still at the moment

I ordered the aft hard line and the dang grommet on it will not fit the nipple on the intake manifold. It's supposed to be a direct replacement from crown. Any suggestions on hose size for that particular nipple?

Hello, just a question if you have a chance to answer. Will PCV and CCV elbows be the same for a 93 YJ 4.0? Because I looked up the part and it wasnt the same you have listed. Any info would be great thank you very much for your informative videos

amazing!

Hi Dan.. I have a 93 Jeep YJ 4.0.. I replaced both of them but still have oil going into the filter box and valve body.. any suggestions I'm stuck! Thanks

I did this fix and the Jeep went from running well to almost dying after firing it up, brings the rpm back up after catching itself, then smells like it is running rich and has a check engine light. Jeep is a 94 4.0 with 75k miles in the original engine. Any idea what could have gone wrong?

Thanks

On the PCV elbow, is there a valve inside it or is it just a tube??

any idea where to find the CCV hose? if it matters, I have the 2.5 L

Is it like a one way vavle

Where can I get a hose for the rear CCV valve?? Thanks

could you tell me my 1997 Jeep wrangler is making that ticking noise could it be this causing it?

Good video

Where does the rear CCV valve connect to? Ive never had it connected. My front valve is connected to the air box.

awesome thanks for help

Is the same valve in back that is on a 2.5 yj 95? i need to chance mine but i dont know if is pcv or ccv, or if is the same than a 4.0 engine

I have been having rough idle issues for a while now, this video helped so much lol. Basically the previous owner had the pcv valve for the back on the front and back which was the small hole. Do you know if this affected my idle at all? I just ordered the parts.

Are these compatible with the 90 yj with a 4.2l engine?

How about making a video on how to replace the rollover vavle or making a video about Gas smell in your Jeep. Thanks!

What caused you to change this?

Does the grommet come in silicone or something that doesn't disintegrate with contact to oil?

I have a 96 4.0 in an XJ approaching 300,000 miles, and I know I have never changed these valves before. There are no obvious leaks, so is there any reason to just go ahead and change them anyways?

Why the heck hasn't anyone manufactured an aluminum or steel replacement elbow yet?! If anybody has a line on one, I have a valve cover gasket replacement in my near future and would like to remove this cruddy plastic part if possible.

anyone knows which ones fits the 2.5 year 92.? it only comes with one.

Well that wasnt right. I have a 1991 jeep and it just turns and pulls out easy. Broke it doing this method

Hi! Thanks for the video! I know this is older, but hoping you still see this/reply :D The hose on the valve in the rear is very loose on my 92 wrangler yj and slips off very easily. Any recommendations on how to make sure it holds in place? Can I just fixate it with a screw-clamp-thingy? :D

Do you have part numbers for new hoses from the ccv valves???

Will it be the same steps for the 4.0 1993 wrangler yj

Could these being faulty make oil pressure higher?

Where does the rear CCV originate? There isn’t a hose attached on mine.

update : it didn't come out as easy as yours. I had to break it all apart but luckily nothing got in the valve cover. Rear CCV valve was not breathing at all.

Looking for some help... I just bought a 94’ Cherokee with the 4.0. As I’m giving it a tune up I’ve noticed the grommets are plastic and are leaking oil. There is no simple rubber grommet to cut off when replacing the PCV valves, instead it’s plastic and seems like it’s going to break. Surely someone else has came across the same problem?

P.ositive C.ranckase V.entilation "PCV Valve"*

How do you know when these need to be replaced?

Would those be the same pvc valves for the 2.5 engine aswell?

What happens if I replaced them with pcv value

What year is this jeep?

Is this same pcv valve for 1991 wrangler? 2.5l

For anyone else with a 93 YJ, I found out it has a different PCV valve than the one use in the video. To remove it, disconnect any hoses, then twist counterclockwise 90 degrees and it pops right out. The valves have different lock and twist lips and the ones in the video wont fit. heres the front valve on amazon: www.amazon.com/gp/product/B000C5I4ME/ref=ox_sc_act_title_1?smid=ATVPDKIKX0DER&psc=1 and back valve: www.amazon.com/gp/product/B01EIBOFIO/ref=ox_sc_act_title_1?smid=A108VDUN6CJBUD&psc=1 As a side note, under the front and back pcv valves there is a pretty big buildup of sludge/ carbon there. any advice on how to clean that gunk out before it damages the engine??

what are the hose part numbers?

There not both ccv valves just the back

This is a lot easier if the engine is hot

OMFG, these people with rubbing OIL on everything, when they make something called "silicone lubricant" for jobs JUST like this.

AM I GOING FREAKING CRAZY!!!! why can I not for the life of me find a CCV ANYWHER!!! both stores and internet all I see is PCV PCV PCV PCV PCV PCV PCV PCV PCV PCV PCV PCV PCV PCV I GO TO AUTOZONE ORIELIES WHATEVER AND THEY ONLY HAVE PCV?????!!!!!!! UGHHHH WHAT THEHELLL!!!!!!........ I need a fraking CEEEE CEEEE VEEEEE VAAAAAAALVEEE!!!!!!! DAMIT!!!!!! THEY ARE DIFFERENT RIGHT RIGHT RIIIIIIGHT!!!!! I KNOW THEY ARE! FRAK!!!!