Sludge & Freeze Problem Cure Dodge, Jeep, Chrysler & Mitsubishi 3.7 & 4.7 (PCV upgrade)

How to fix the problem with condensation in the engine oil and the freezing of the breather tube to the PCV valve. This happens more often in colder climates especially in temperatures below 0 degrees Fahrenheit or -18 below Celsius. Condensation in the oil fill tube in high humidity parts of the country is also common. In 2007 the problem was fixed by moving the PCV valve to the rear left cylinder head from its previous location on the oil fill tube.
Here is a link to a TSB from Chrysler to how to fix the problem on older models dodgeram.info/t...
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[@MyBacktrail]

I'm building my wj right now and I just have to keep coming back to this channel. This video helps me so much just because I'm putting my engine back together after it being worked on for 4 months, much longer than expected, and I can't remember how all the hoses are supposed to go back together!

[@lavapancakes8185]

Great video as always, been following your 4.7 videos from the beginning and it’s helped me so much the 4.7 is over looked it can rev high retaining smoothness and a balanced power band. I imagine you are going to swap an HO version into yours for the stronger internals, higher compression, and more tune ability with the knock sensors. But my question is have you ever thought of putting a Hemi in, I know it’s a large undertaking but with you style of crystal clear videos the WJ community would be extremely grateful! Thank you for your hard work and innovative modifications and willingness to share it you have made my 4.7 Jeep and many others better.

[@martinbuilt]

Thank you so much Grant I really appreciate those kind words. For right now I'm going to be continued working on the 4.7 and yes I will be putting the HO engine into the Grand. A coworker of mine had a SRT8 Challenger that got rear-ended I didn't know about it until sometime afterwards, they totaled it. I would have loved to have bought it from the insurance company and install that engine and trans into the grand. Maybe someday. Thanks again

[@kevinmcmillin7594]

First and Foremost, thank God we've got people like you whom take the time too make these awesome videos and for that I'd like too thank you...I've spent quite a bit of time watching your videos over and over as I've battled my 02 WJ 4.7 over the last 5 years of owning it....First it was the cooling system the Jeep Went through 4 T-Stats, Water pump then after I got that mostly sorted I kept getting misfires on #2 plus had a few spark plugs get eaten..I replaced coils but no luck and it took me a year to find out that my H- Balancer was the problem when it finally exposed itself one day due to the rubber on the balancer stretching from it creating a ticking noise as it ran...My local shop wanted $800 to repair so me and my good friend did the work and since the Hydraulic unit had to come out I decided to swap in a new Denso radiator while in there..Your video helped alot with that job..Now I'm gathering the rest of the parts to due your PCV mod since it get cold in Kentucky and I've found the crud underneath my oil cap and in the filler tube..Also fot all the parts too do the hydraulic lash adjusters swap along with new VCG's...Was wondering if your running oils High in Zinc for the Hydraulic tappets and if so what brands ?

[@martinbuilt]

Thank you for the kind words I do appreciate that. I just use Mobil One with Marvel Mystery Oil or Rislone. The zinc additive is for hydraulic or solid tappets that make contact with the cam lobe.

[@kevinmcmillin7594]

My pleasure and I look forward to many more of your AWSOME videos !! Thanks for the oil tip....Was wonderful if you have a store for your Martin Built stuff ?

[@nalinpremaratna925]

Martin… your videos are amazing…. I’m building my WJ back in Sri Lanka. I have done most of your mods to mine. Got the parts for the electric fan conversion. Except for the duel speed fan … them I’m done…. Really appreciate your tips

[@chriswhitehouse9764]

The multiple vacuum connections and T fitting on the crankcase system always confused me. This engine stand view really helped clarify what Jeep did thanks!

[@martinbuilt]

It can be confusing 😕once you get done with the modification it will be easier to understand and work so much better 😉

[@donaldroblyer2221]

Martin--the oil neck pc valve and pipe can be cut off with a hack saw and cleaned up with a file and sand papered to a nice finish. Then take a 25/64th plastic trim plug with some silicone sealer on and around the shank, press plug in hole and it looks like it was made that way. It takes 15 minutes and it is easy and cheap.

[@harleykinkennon2683]

Oh man you just made my lift so much easier!!! Thank you for showing on an engine that's NOT in a car. It's so hard to see what other people are doing back there on their videos. #NotAllHeroesWearCapes

[@martinbuilt]

Glad you found it helpful

[@austinkelley5614]

Great video! Sooo awesome that you have so many 4.7 videos for us. Especially us junkyard crawlers specifically!! I think I'm just gonna pipe mine together in the rear of the intake and us the none PCV oil fill. Appreciate you sharing your knowledge!

[@martinbuilt]

Thank you, Austin. I really appreciate that. Still more to come for the 4.7

[@aarongarcia198]

rebuilding my wj and martin videos always give me hints to what i am missing. Much appreciated

[@martinbuilt]

I'm glad you like them and find them helpful thank you for watching.

[@donaldsilversmith248]

Thanks Martin i got 03 4.7 Durango same problem with the crankcase breather system iam going to fix mine . Ur the most experienced I've been watching ur videos .

[@martinbuilt]

Good to hear, thank you!

[@absalonmontes9337]

Awesome insight that you have going on there. I have been having issues finding anything that would show me how any of these things go together on this '06 4.7 Mitsubishi Raider that I purchased recently. Videos that I would find on the same truck and year would all have different engines from the one that is in my truck. But thankfully I came across your videos which extremely helpful. I hope I fine more of you're video's that continue to cover this elusive engine that no one seems to have. Thank you for your hard work and sharing with us

[@martinbuilt]

Thank you I appreciate that. I have yet to see a Mitsubishi Raider with the 4.7 I'm always looking for one at the salvage yards but I've never found 1 yet. This is the channel for the Chrysler Jeep, Dodge and Mitsubishi 4.7

[@charliedee9276]

I did this to my 04 and added a catch can also. I live in Michigan, not a trace of condensation on the filler cap all winter. I just blocked the original hole in the filler. I ran a tube from the resonator box to the pass side head, works perfect.

[@hwydog905]

Hi, I just found your vid. great how to. I live in southern Ontario Canada. i just bought a 2005 dakota with less than 97,000klm on it. 3.7 l engine. it must have sat for sometime before i bought it. I went to check the oil , looks great & clean. i looked under the oil cap and there is water and milk. It scared the crap outa me thinking head gasket... i havnt looked at the rad cap yet either. the antifreeze is low but i havnt topped it up to see if its losing any yet. Gotta wait til the stores open tomorrow the buy antifreeze and tune up parts. plugs filters etc.. I am also going to look in the cylinders when i change the plugs , I hope I dont see any moisture on them. fun stuff..

[@martinbuilt]

In Canada I would think it is common to see that under the oil cap with this engine and that is one of the reasons to do this mod.

[@bjr2379]

My 04 4.7L WJ is dripping oil right onto the one catalytic converter. I heard the pcv hose leaks where it connects to the nipples in the back of the heads. This video helps me a lot. Thanks Martin!

[@mikesunderpressure1]

I've been watching a lot of videos you like one of the best mechanics I've seen

[@vr4787]

I must have lucked out cause the 4.7 in my 06 Dakota has that set up with the pcv valve on the rear of the cylinder bank and the breather hose routed that way. Great video!

[@martinbuilt]

Thank you, that's good, maybe they started in 06 with that mod.

[@arizonaguy7574]

Thanks again Martin for another how/why video. As I am planning a 2000 Dakota build I have made a "How to" folder in my favorites. Guess who dominates that folder!!! :-D

[@martinbuilt]

Fantastic!

[@djvelasquez2643]

Sphecter hose works as well. Upgraded hoses work just as well.

[@gittyupalice96]

Mine has two filters, one small plastic box inside the intake that contains a fiber filter element soaked in oil and a metal crank case breather cap with another filter element inside it. Chryslers manual dictates that these two filters are to be cleaned with paint thinner or other solvents and re-oiled with fresh oil every time you do an oil change. Thats on the passenger side (right) side valve cover/cold air intake. On the drivers (left) side is the (P)ositive (C)rankcase (V)entilation valve, Chryslers manual dictates to test the valve function making sure the (1 way) flow regulator inside it can move freely. They go on further to say if stuck or damaged (DO NOT ATTEMPT TO CLEAN AND RE-INSTAL) they said it must be replaced. This is for an engine built at Mound Road Engine plant, (OCT 5 88) As stamped in the Iron. Anywho, thats what I do... and It works fine, no water in the system... No freezing or locking up ever. So Chrysler seems to have solved the problem 20 years before the problem.

[@mikehunt8375]

Wow, thanks man! I was watching a video on doing the timing and this happened to be up next and it was exactly what I needed! I just checked my oil and had yellow stuff on the oil fill tube cover and was freaking out! Now I know why it's doing that and how to fix it. Edit. Wait a second the Dodge Durango one doesn't have anything coming out of the oil fill tube?? So what do I do with the line I pull out of my jeep? You said I could either get one of those or do what you just did here.... So I need both then? Hopefully my question is clear enough. Thanks for your time man. Much appreciated

[@martinbuilt]

Not sure what your asking, but here is a link that might help. TSB from Chrysler to how to fix the problem on older models dodgeram.info/tsb/2006/25-001-06.htm

[@marcogarcia9947]

Perfect job Mártin,,,,,,,Thank you...more videos to learn.....please!!!

[@martinbuilt]

Thanks, will do!

[@jesusrperezd]

Great as always

[@martinbuilt]

Thank you 😊

[@LevQWERTY]

Greetings from Russia. Please tell me the reasons for getting oil into the air (engine 4.7 EVA) resonator (there is little oil, but it is). Is it possible to clean the PSV valve (the principle of operation is elementary and there is nothing complicated) or is it only necessary to replace it? With temperature fluctuations, I also encountered a sticking of the idle motor. Thank you for the video.

[@stephenprice9635]

So in all reality I should be okay with just deleting the pcv tube and closing both ports off as I utilize the intake tube from factory still on my intake?

[@meowMago]

Martin Thanks! I am enjoying your great video. And I am following you step by step.

[@martinbuilt]

Thank you for your kind words, I'll keep them coming.

[@lucasarias5015]

Hello Martin, excellent video and explanation. I was wondering if you can keep the original pcv line from the oil filler port and add another from the cylinder head, as you explain in the video? Is it compatible to have 2 pcv?

[@gauge1223]

Will the 08+ valve cover only. Just the baffled cover. fit on the first gen cylinder head ??? I did this update and I started consuming twice as much oil. And I’ve narrowed it down too slight over pressure and just excess oil pick up from valve cover. So the baffled 08+ it’s pretty necessary at least if you’re putting heavier loads on the vehicle.

[@abelgarza4359]

Martin great video thanks a lot but let me ask you some I have a 2002 dodge 1500 4.7 and it’s using so much oil I replaced the Pcv valve and doing better but still using to much oil could this set up help me with the usage

[@bumpstart21]

Hi Martin, Im in the hunt for a 4.7wj to add the the 4.0 stable and wondered if you might do a short intro to the 4.7 and what to watch for. Also, what do we do about the Vari-Lok axles these days? Avoid?

[@marwanmohamed4414]

Hello Martin good info thanks alot

[@onesikm3]

Hey Martin, great videos sir! Is it possible to see smoke leaking during my evap vacuum leak testing from the left side of the throttle body of my 2006 Jeep grand Cherokee Laredo 3.7l. I’m seeing a leak coming from the throttle cable spring area ? Is that even possible to have the shaft leak ?

[@joshuarichardson2705]

Would that explain the Coolant loss with no Coolant in the oil, I have a 2004 jeep grand Cherokee mile reservoir tank is empty in the morning along with the sludge in the oil cap my dipstick is clean oil filter is clean and no white smoke no bubbling radiator no bubbling tank and I don’t know where the coolant is going could this be possible

[@Wittsity]

Would this work on 2002 jeep liberty with the 3.7? I don't see why it wouldn't but want to be sure and if I am missing the plastic piece with the arrow on the driver side (bank 1) would it be OK or is it possible that can cause damage running without that piece?

[@ChilePicanteKornNvtz]

Appreciate your videos. The lnk to the TSS is coming up to 504 Gateway Timeout. Would you have a more recent or up to date link to the TSB?

[@ivanvujadinovic9905]

Hey Martin, another great video thanks, for some reason just found it now and did not see it before. The question I have related to the PCV system, is there a reason why you would not install an oil catch can on the 4.7? Would that not help with the carbon buildup on the valves? TIA!

[@martinbuilt]

Yes, absolutely. I will be installing one eventually.

[@ivanvujadinovic9905]

@@martinbuilt Looking forward to that video of you installing an oil catch can, before I take a stab at it myself :) Thanks!!

[@jucereca14]

I want to see the oil catch ?

[@foestuart8517]

Hi, I have a question for you. I have a 2003 jeep grand Cherokee 4.7 L V8 I’ve replaced the lifters and rocker and replace spark, plugs or new. Can you help please?

[@thaAzian1401]

Hey Martin Love ur videos I have a question Tha 19mm fitting that u removed Would u happen to know tha thread pitch size Thanx

[@willd3808]

pvc... :| ..pcv.. loved the black and white edit :')

[@Kolonol1]

Sorry to be commenting so suddenly and so much on all of your videos with so many questions...I have learned so much from your videos...thankfully you at VERY good at explaining and showing... My question here is your new "pvc" valve...(heh...heh...) What year was that from? Because mine is a 2000 and all I can find is the plastic one up front and crank case breathers in the back...

[@superkillr]

Can anyone explain why the setup shown has issues, vs other manufacturers? Is there some vapor going somewhere that it shouldn't?

[@alansunday]

New to your channel. Really like your videos. I just bought an '04 Jeep Grand Cherokee Limited with the 4.7 about 2 weeks ago. When I bought it, the oil looked clean on the dipstick and at the correct level. I maybe drove 300 miles in a week before I decided to change the oil the following weekend after purchasing. Only 3 quarts of oil drained out. I don't see any sludge under the filler cap. I am seeing wetness underneath at the back of the engine. It doesn't smoke at all. There is a smell of burnt oil after driving, but I'm sure it's coming from that leak at the back of the engine because it drips onto the exhaust. My question is, was wondering if the PCV valve and breather update would help this oil consumption? Or do you think I have another issue. I will check out your other videos. Forums I've read seem to suggest this is common for these 4.7s with no actual fix on any of them.

[@martinbuilt]

I don't think the PVC upgrade would reduce oil consumption. Something to consider is a oil catch can . I would do this in conjunction with the PCV valve upgrade. Thank you for checking out the channel and for subscribing I was planning to do a video on installing an oil catch can

[@jennifersomers351]

Would this work for my 2001 4.7l dodge dakota ?

[@martinbuilt]

Yes, it will. Something I need to do to my own 01 Dakota. Thank you for watching.

[@brandonjohnson3566]

Hey martin i have another quick question for you brother. So my 3.7l v6 has a issue where she shakes a little during idle. She has new spark plugs, IAC valve, intake manifold gaskets, and TPS sensor. I cleaned the throttle body spotless but she shakes and shes supposed to be getting around 20mpg average but im getting 13 to 14mpg. No codes stored in ECU. My buddy thinks it may be solved by replacing the vapor canister as the engine doesnt have egr. Whats your professional opinion?

[@richardrishko244]

Martin why not put the pvc on the other right side of the head, leave the left side alone.

[@martinbuilt]

Yes, you can certainly do that, and that would work well with the earlier intakes where the Pcv line fitting goes toward the right side. Thank you for watching.

[@dannyw7662]

The link to the tsb you provided does not work can you repost it?

[@thaAzian1401]

Hey Martin Love ur videos On ur new pvc valve What size is that fitting that goes in tha rear cylinder

[@jurajsmutny8171]

Hi, please how is it actually with that yellow sludge.Does that remake really reduce sludge creation? Maybye it creates regardless and instead of leaking in oil fill tube it leaks right in heads.I mean when is it so helpful to engine, why is not like that right from factory ?

[@martinbuilt]

This will correct the problem that the factory did earlier. What's happening is that the long tubes that were originally used are causing condensation because of the cooling effect. By shorting all the tubes, this reduces the sludging problem.

[@jurajsmutny8171]

@@martinbuilt Yes it makes sense ;) And can I use old pcv valves ? I have two.And they have no pring,its weird..I am doing it on Wj 4.7.

[@donnapratt5534]

Does this fix the sludge buildup in the oil fill tube Or would simply replacing the PCV valve fix that I've noticed white sludge in my oil fill tube the last two Winters.

[@martinbuilt]

Simply replacing the PVC valve will not cure sludging problem. Part of the problem is where the PVC valve is located.

[@Keyno77]

What would happen if the all 3 filler neck, left head and right head lines just went to vaccum behind the manifold would that work as well? The positive crank pressure thay used to come from the filler tube can be drawn from the left head as well? Only the left or right too?

[@martinbuilt]

Then, there's no way for the engine to draw fresh air into the crankcase.

[@Keyno77]

@@martinbuilt I didnt knew it needed fresh air, I thought only vacuum was needed for better piston ring seal and drawing blowby. I have to go back to the back learn more about it 👍

[@akchris8092]

Hi Martin, Great video. I am a new follower and a big fan. I have a couple of questions: Which way does the air flow from the right cylinder head? If it flows from the resonator/airbox to the cylinder head, should the 5/8" to 1/2" CCV breather valve be reversed or removed? And, would a wider diameter hose improve or diminish the system? You mentioned that the 53032925AC PCV Valve is 5/8", but the product detail says it is 3/4". Maybe it does not make a big difference for the hoses, but though I would mention it since I am trying to complete this project myself with the inclusion of an oil catch can. Let me know how the heater hoses worked out, I heard they have a tendency to collapse when under high heat. Thanks again!!

[@martinbuilt]

Yes on the right cylinder head it goes from the breather box to the cylinder head you can use larger hose if you like just don't go smaller. And you're correct it is 3/4 in on the PCV valve.. Heater hose worked fine and remember it's under quite a bit of heat itself But it's not as oil resistant but it did work.

[@weimer2011]

Could you use two of the new style pcv valves and vent to atmosphere using small cone filter? Or does it require a vacuum source to pull crank case gasses?

[@martinbuilt]

I would recommend one new style PCV and at the other cylinder head use a cone filter. Yes, you need a vacuum.

[@scjeepHO]

Another great video. I have mine going into the suction side (Inlet) of my Blower but I want to get those other style PCV Valves you showed. I haven't done much with the 4.7 in years considering mine sits a lot anymore. What did those come out of a Durango?

[@martinbuilt]

Thanks, Richard, you can find them in 07 and newer 3.7 and 4.7

[@maniacalmonster2293]

Martin, can you somehow send me the location for all of the breather vents on a 2004 JGC WJ 4.0. I am not sure what part even has a vent and where they might all be at. I've been searching online for days. I just can't seem to find what I'm looking for.. Mainly, at all I just want to find a vent for my transmission. I have verified all tubes coming off of the transmission and none are a breather hose. I know where the vent is for the transaxle. I would be forever grateful and in your debt.

[@racerxv6valvoline424]

So Martin this takes care of the white sludge build up that forms on the inside of the filler tube?

[@martinbuilt]

yes, this was Chrysler's fix to the problem.

[@hussainalsayegh7234]

Excellent work as usual, Could you tell me is the oil catch can good idea for wj overland 2004

[@martinbuilt]

Yes, absolutely, I will be installing one soon from Radium amzn.to/3ikC2xH

[@hussainalsayegh7234]

@@martinbuilt thanks I just fixed to my 2004 Overland I was straggling and lost with location to install however I just put it next to intake airlifter tell I see your new installation video waiting for you....

[@TacticalNightBoy]

I know this is seperate from the video.. I have a 2005 Dodge Ram 1500 with the 4.7. Where is the Transmission controle modul located? My truck randomly kicks out of overdrive and gets stuck in two gears. It don’t do it all the time, and clearing the code on my CEL helps.

[@martinbuilt]

on the 05 the TCM is intergraded with the ECM.

[@TacticalNightBoy]

@@martinbuilt so do I need to replace that or what?

[@ChrisB-cx6td]

@@TacticalNightBoy have you scanned the codes ? Maybe needs to get oil change

[@TacticalNightBoy]

@@ChrisB-cx6td wound up being a p0720 code... changed sensor still nothing... plug is good sensor is brand new.. thinking it could be a bad spot in wire or pcm now

[@ChrisB-cx6td]

@@TacticalNightBoy maybe get a used tcm see what it does

[@donnapratt5534]

Do you know which way you turn the PCV valve on the 3.7 motor it may turn towards the front but I can't really tell as you stated it's so crowded in there, I don't want to break it off like the other guy did in your other video

[@martinbuilt]

I'm sure you turn it to the left toward the back of the engine. I would also press inward as you're turning it to the left.

[@MarkAlves1982]

Where would you install an oil catch can?

[@martinbuilt]

I know it can get quite crowded under the hood. On my particular a particular 04 Jeep Grand Cherokee I'm going to mount one between the brake booster and the fender.

[@MarkAlves1982]

@@martinbuilt How would you pipe it? Y both valves into the oil catch can and vent it out to the intake manifold??? Idk

[@faviocorrea1974]

Great video

[@martinbuilt]

Glad you enjoyed it

[@joementos4995]

Looking for the part number for the new style pcv

[@martinbuilt]

Here is a link amzn.to/3zSkhjo

[@gauge1223]

The link to the Chrysler forum won’t open

[@emilianogonzalez8170]

hey martin i like your tutorials you do a awesome job. i have a question .i rebuild a engine 4.7 HO from a 2002 jeep grand cherokee,it turned on great but white smoke comes out from the bottom of the manifold and the oil get really hot ?any advice or suggestion please.God bless you

[@martinbuilt]

white smoke is a leaky head gasket. Bottom of the manifold? intake or exhaust?

[@sierrajesselee]

I have oil under my filler cap but nowhere else do I need to do all of this as I'm pretty sure the build up is from my gf driving to her job three blocks away without letting it warm up fully

[@brandonjohnson3566]

Im so confused because i have a 3.7 in my mitsubishi. The pvc is on the oil filler neck which on your video of the engine on a engine stand also had. So is it ok to do this same set up and have two pcv valves while eliminating one of the breather element check valves?

[@martinbuilt]

No you still only want one PCV valve as shown in the video. Eliminate the one on the oil fill neck and then add the new PCV valve to the cylinder head. Thank you for watching.

[@brandonjohnson3566]

@@martinbuilt thanks for the reply

[@seanpresto5111]

So what do you do with the passenger side hose if you dont have an air box? I only have a 3" intake tube thats only about 7" long. Just vent to atmosphere with a filter?

[@martinbuilt]

Yes exactly I used a small k&n filter on the end of that fitting. Thank you for watching.

[@seanpresto5111]

@martinbuilt of course. Thats what Ive been running. Juat wanted to verify. Still looking forward to thise eaton m90 videos

[@seanpresto5111]

I would install a catch can martin. Ive noticed with my 08 pcv it sucks in alot of oil. Not sure if I somehow have a faulty valve out of the box, haven't had a chance to replace it yet. Thanks for the videos. .

[@martinbuilt]

@@seanpresto5111 yes that is the plan I actually have purchased one already I just have it installed it yet.

[@seanpresto5111]

@martinbuilt ok good. Just wanted to make you aware. I was quite surprised at the amount of oil after just a few weeks. Hopefully you got a large one. Trying to keep my nice oversized valves are clean as possible.

[@davejames2015]

I think im gonna put a catch can on the 3.7l i justin bought. Seems to be usung oil

[@Trollet456]

Anyone found any complete pcv rebulid kit somewhere?

[@cappaculla]

Nice job, thanks. 👍

[@alphabet634]

Thanks for your in detail info. Question I have a 12 Jeep Liberty and oil leaking from bottom of timing cover. Any ideas

[@martinbuilt]

I would make sure it's not coming from the crankshaft seal first, if it's not that then replace the timing cover gasket.

[@alphabet634]

martinbuilt thank you Martin much appreciated

[@osamaaltmaimi8312]

Thnxx thnx

[@CharlieWhitewolf]

Do I need to put gasket sealer on the Timing cover gasket of a 2002 4.7?

[@martinbuilt]

You could use RTV or this gasket right here. amzn.to/3Ofi0n3 I personally prefer the gasket.

[@CharlieWhitewolf]

@@martinbuilt I don't have to use both? Only reason I ask is because when I took it off it had both.

[@CharlieWhitewolf]

@@martinbuilt Thanks for the info. You have been a big help.

[@boogerhead0]

What I really dislike about this entire crankcase ventilation system is the fact that oil-laden blowby fumes, carrying lots of gunk, get passed directly into either the air resonator or the intake manifold, grossly filthing up the pathway. Just take a peak at the backside of the throttle plate, or, with throttle body removed, wipe a clean towel inside the air box inlet to see the filth. And we know cleaning the intake for a new build is such a filthy chore, even with a lint lizard brush and solvent tank, much detergent, much air, as that filth is everywhere inside the intake. Just wants me to add an old-style "breather tube", hanging down beside the block, sometimes.

[@martinbuilt]

I hear you. One thing that would really help a lot is an oil catch can.

[@victorarevalo108]

Great video!

[@martinbuilt]

Thank you, Victor!

[@frankmaio7106]

Can someone provide the part number for the 34611 breather hose pls?

[@HARPO1ME]

Could that pvc.pcv valve arrangement be used on a 06 liberty with a 3.7l??

[@martinbuilt]

That should be the same.

[@marcogarciabautista853]

Thank's brother...greath job

[@jonathonmann979]

I did this and I have a horrible vacuum noise in my air box. Do I possibly have the valve backwards?

[@martinbuilt]

Just to make sure you did this correctly the hose from the air silencer box go strictly to the passenger side cylinder head then the PCV valve is installed on a driver side cylinder head the hose going from that PCV valve goes to the back of the intake manifold. Then plugging the original PCV valve on the oil fill tube or replacing the oil fill tube with a newer model.

[@jonathonmann979]

Should I have a valve on both sides? Or just on the driver side? Or as long as they are the right direction it should matter?

[@martinbuilt]

@@jonathonmann979 yeah technically it doesn't matter what cylinder head PCV valve is on as long as exit side of the PCV valve runs to the back of intake manifold. The PCV valve itself cannot be installed incorrectly, the threat side to the cylinder head in the hose fitting side to the intake manifold.

[@jonathonmann979]

Could a bad PVC cause low oil pressure? I changed out my rod bearings and main bearings and my pressure still falls to zero. I have a new switch as well. I have a new pump I'll be putting on in the morning.

[@martinbuilt]

@@jonathonmann979 No PCV wouldn't cause that sounds like the oil pump to me.

[@ClassicFIHD]

I live in Norther New Jersey. I have a 2009 4.7 Chrysler Aspen. I just had the oil changed after 3,000 miles and the oil filter was filled to the top with what looked like clear fresh water. About 2 weeks ago the oil light came on and the engine shut off and the temps were below freeaing. It ran again after it got warmer. Is it possible to get that much fresh water in the oil? I do let the vehicle sit a lot, for 1 or 2 weeks at a time between usages..

[@martinbuilt]

That just doesn't sound quite right, with that much water in the oil your oil should look very milky. And why would there be that much water just in the oil filter that is what doesn't make sense

[@ClassicFIHD]

@@martinbuilt Yes, very stranger. My Mechanic said the same thing from in your video but mentions a sponges and a breather valve that gets clogged at the exhaust manifold. About 5 months ago I have the oil pan replaced as the original one was porous. I'm dropping it off soon and will keep you posted. And the water in the oil filter was not at all milky. I'm betting that's what froze and stopped oil flow.

[@ralphkauffman3834]

i have an o2 dakota 4.7l do i need to replace my pcv valves if so with what out of? thank you

[@martinbuilt]

If you're wanting to do this mod yes out of a 07 and newer 4.7 or here is a link to a new one Genuine Chrysler 53032925AC PCV Valve amzn.to/2M8YL2T

[@ralphkauffman3834]

@@martinbuilt thank you, besides the hoses, is that all i'll need to buy.

[@ralphkauffman3834]

@@martinbuilt sorry one last question, i have a KnN air intake should i just run the hose from the pcv valve to the port thats already in the tube, as there is no air box to drill. thank you so much for helping me.

[@pochitalamorfoni]

Do You need the breahter valve between de cylinder head and the resonator? I watched de 4.7 on the 2007 wk and it only has the new style pcv valve from one head to the intake manifold and a straight hose from the other head to the air box.

[@martinbuilt]

what year is your 4.7?

[@pochitalamorfoni]

99, and I want to make this mod.

[@martinbuilt]

@@pochitalamorfoni yes you mentioned the 07, that is exactly what this mod is all about. Basically coping the 07

[@pochitalamorfoni]

@@martinbuilt what I was asking is if a have to keep a breather valve (the plastic one) in the line that goes to the air box. I saw you kept yours.

[@solero7378]

Hit the thumbs down twice...hahaha! Question. This was a good vid, as are all of yours. I have an 04 GC Special Edition. I got it 3 years ago with 78k on the clock. My wife loves it. She drives it instead of her new '19 GC. Go figure. Anyways, at 8:00, where did you get that valve? And do I need that. I'm going to do this mod, and I came by watching this vid because last night I was changing spark plugs, and when trying to move the PVC...lol, PCV tube, I broke the part that goes to the oil filler. I was looking on the web for a way to disconnect it, and couldn't find anything. I saw your vid, and am going to get rid of it altogether. Thanks Martin

[@martinbuilt]

Thank you, I appreciate that, sounds like you found a very low mileage JGC. You can find the PCV here. Genuine Chrysler 53032925AC PCV Valve amzn.to/2M8YL2T

[@solero7378]

@@martinbuilt i got that...I was referring to the filter you had inline in the hose. Thanks

[@martinbuilt]

@@solero7378 oh, that is part of your existing PCV system, you have two of them.

[@solero7378]

@@martinbuilt Noyce! Thanks! I have another question. Have you had problems with your key fob? I, for the life of me, can't find the reciever in the car. I have put new batteries in the fobs, I've purchased new fobs. I bought a programmer that plugs into the OBD port specifically for programming new fobs. Nothing. I'm thinking it's the receiver, but I have no idea where it is or what it looks like. When I was trying to program the new fobs, it seemed like the receiver was either in the front pass. door or the overhead panel. Have you run into this?

[@martinbuilt]

@@solero7378 my understanding it is in the front passenger door.

[@GeoNemesisITA]

dont you think an oil catch can is it worth do add?

[@martinbuilt]

absolutely, one of the things on my list.

[@danieldiggerman]

@@martinbuilt where would u put catch can between pcv valve and intake

[@tylerdubois9020]

Martin, doing some work to my 4.7l HO today, (new radiator, water pump, t-stat, valve covers and lifters) and broke the PCV hose with the 90 degree tee near the rear when trying to get valve cover off. I was thinking of going to autoparts store and getting heater hose tee's. Do you think that will work as a substitute? The tee broke right off the elbow so there is no repairing it. It also seems they sell vacuum tubing elbows and connectors. I might just re-do all the hose with emissions lines because the plastic is brittle and seems to break easily. Would this be an issues replacing the plastic hard-lines with the softer emissions lines they sell? Thanks

[@martinbuilt]

Yeah you could use heater hose fittings and soft hose as long it will handle oil.

[@tylerdubois9020]

@@martinbuilt Thanks for the quick reply, you are my go-to for anything for my WJ. Also, do you think I would be better off going with silicone hose or just the rubber emissions hose they sell?

[@martinbuilt]

@@tylerdubois9020 go with the emissions hose.

[@juliogonzo2718]

Where/why does it freeze up with the crossover installed?

[@martinbuilt]

are you saying it freezes-up after doing the mod as explained in the video?

[@juliogonzo2718]

@@martinbuilt no, I was just wondering where in the system does it plug, and what is the root cause? I haven't done the mod yet

[@juliogonzo2718]

@@martinbuilt I'm guessing the two inline valves are the pcv valves in the factory system. I wonder if insulated hoses would have prevented the problem in the first place.

[@tylerdubois9020]

Hey Martin, I plan on installing a catch can, but there is not a lot of room in the engine bay with the 4.7l. I would mount it near the brake booster in that corner, but I recently did the WJ to ZJ wiper fluid reservoir relocation to that corner. The only spot that really leaves me enough room to untwist the canister for draining is right next to the tube that runs from the air filter to the manifold. However there isn't anywhere to mount it. Do you have any ideas or suggestions? Thanks, Tyler

[@martinbuilt]

Is there any room to mount the catch can on the passenger side and then install the new PCV valve on the right cylinder head.

[@tylerdubois9020]

@@martinbuilt Not a whole lot of room on that side either with the Battery, PCM, overflow tank for Coolant. I will do some more searching and I will report back with what I decide to do. I may have to get a different catch can that has a drain valve on the bottom and route a hose onto it.

[@CharlieWhitewolf]

I think I need to get my durango running and go re-engineer somethings on it at the Junk yard.

[@Jolly-Sid69]

Hi Martin, do you know whether the water condensation may be affected by exchanging an old oil filter cap?

[@martinbuilt]

no, the oil filler cap should make no difference.

[@Jolly-Sid69]

@@martinbuilt Thank you

[@bobbydabutcha]

Hi, what would be the cause of coolant leaking above the starter? 2001 Jeep Grand Cherokee Limited, non-HO 4.7 V8. I thought it was the freeze plugs behind the engine, but the ones on the side of the block and behind the heads are not leaking. Heater hoses are dry on the firewall and nothing leaking on the reservoir tank or hose. Any thoughts on this?? Thanks in advance :D

[@martinbuilt]

How about the head gasket. I hope it's not that for your sake.

[@bobbydabutcha]

It’s not the head gaskets, I just did the valve covers and inspected them. Plus no heat or over heating issues, white smoke or anything else. Bell housing is still clean from when I cleaned it the other day but it’s still leaking from the starter. Small leak nothing major. Bright orange coolant, not mixed with anything else like oil. I can always just pull the starter at work on my lift and look above it lol. Might just be a freeze plug above it I’m not seeing.

[@bobbydabutcha]

I also live in Alaska where it can get to -15 for months at a time. I’ve never had issues with cooling or heating. I think I’ll just remove the starter next week to peek inside behind the motor area by the freeze plug as well as up and above it. Thank you for all the cool WJ videos!!

[@bobbydabutcha]

Also not the heater hoses or coolant reservoir tank or hoses. I feel like there is a coolant line up and around that area I’m not seeing. I know our fans run on the coolant system but that’s all I know about it, I was also suspecting that. I was hoping you encountered something similar.

[@bobbydabutcha]

Disaster diverted. Old block heater leaking! It was right above the starter!

[@Brave777]

Would this work for my 04 Dodge ram 1500 3.7L? I have this exact problem!

[@martinbuilt]

yes it should the 3.7 is basically the same engine minus 2 cylinders

[@Brave777]

@@martinbuilt Thanks! This has been bugging me for a long time. And I thought it had a blown head and I'm guessing the previous owner did too. Another question, would this also cause misfire codes and cat codes too? I also get a little white smoke at idle only and it goes away, it's never consistent! Love your videos and am grateful for your content.

[@martinbuilt]

@@Brave777 white smoke is an indicator of a blown head gasket. Is it using any antifreeze? Are you adding antifreeze? If so there's a good chance we do have a blown head gasket.

[@Brave777]

@@martinbuilt Yes I am but it pushes it through the overflow tank. And I'm also missing on the overflow tank, I think what they call the burp valve? I've been trying to find a replacement overflow tank and all the replacement ones I see online don't look nothing like mine. I also have I think a small leak in the heater core. So long answer short yes I do but it's not coming out anywhere other than those two places that I just told you about.

[@raulbueno4284]

What about a 4.7 Powertech motor on a 2001 Dodge Durango

[@martinbuilt]

This works for your Durango

[@raulbueno4284]

How should I do it like you did it on the video because that's 2001 Dodge Durango ivory bone stock as 200,000 miles on that track I'm original owner open and I was going to ask you one thing on that 4.7 would you recommend for a bow stands drop from the heads

[@davidstuck2866]

the link to the tsb would not work for me. i have a 2005 jeep liberty with the 3.7l v-6, is this an issue with it as well?

[@martinbuilt]

I see what your saying, it used to work. I would think the 3.7 has the same problem.

[@albertoorellana157]

Martin whay you don't use oil Catch can.I used in my dodge dakota it work fine is much better.

[@martinbuilt]

I looked into that and found a nice write up on it. That will have to be another video, thank you.

[@LtGIR]

Just discovered this TSB and have done some research, with this video being a big help. I saw in a couple threads where people were adding catch cans, and it seems like a good idea with the 4.7 having sludge issues in colder areas like I'm in. I'm wondering if you have an opinion on adding a catch can?

[@martinbuilt]

I have purchased the catch can but haven't installed it yet, and I got the one from Radium

[@LtGIR]

@@martinbuilt Thanks for that. I have another question maybe you could provide insight on. Because of the location of the stock airbox, do you think the PCV could be installed on the passenger side of the engine with the tube to the airbox coming from the driver side? Would be easier to make things look neat that way.

[@tylerdubois9020]

Hey Martin I got a question i'm hoping you might be able to help out with. I plan on installing on my 4.7l HO an oil catch can to see how much oil the ventilation system has running through it. What would be the best way to route it? Where would I have the inlet come from and outlet go to? Thanks

[@martinbuilt]

Go from the PCV to the inlet of the catch can and outlet to the intake manifold. I'm also planning on install one. Which one are you going with?

[@tylerdubois9020]

@@martinbuilt That is what I planned on doing. I still have my PCV the old setup so I will go from the Oil fill cap PCV. I'm wondering if there would be any purpose for me to swap to the set-up you have since I am doing the catch can.

[@martinbuilt]

@@tylerdubois9020 I would for sure if you live in a cold-weather climate.

[@tylerdubois9020]

@@martinbuilt If I convert the PCV set-up, I would still route the catch can in the same pattern correct?

[@martinbuilt]

@@tylerdubois9020 yes it would be the same

[@mcdanielsweldingcustomfabr4342]

Thumbs up for sure but am I the only 1 lost at 7:48 please help😌

[@martinbuilt]

what's your question?

[@mcdanielsweldingcustomfabr4342]

@@martinbuilt sorry I’m late but my question is does this really solve the sludge problem or if I just run the tube with new everything back. Originally will that solves the sludge problem as well ??

[@mcdanielsweldingcustomfabr4342]

@Martinbuilt I replace all the hoses and ordered the pcv valves you suggested and waited a full three weeks before they arrive but I had to wait because I wanted all my parts together to get my hemi back right and on this road 😓 so because I had parts coming from everywhere in Texas unfortunately I waited a full 2 months but when I changed everything added a little seafoam treatment to my oil and gas waited 72 hrs and replaced my oil with fresh synthetic oil and it Not only cleared the sludge problem but My hemi is running like a champ💪🏽💪🏽 and ready for the road 😎so thank you and people like you. Deserve their roses i can’t say this snuff I really do appreciate it 🎯

[@mcan369]

Hey Martin, I just did this mod on my 99 4.7l, aside from the difference in tube size (3/8) coming from the intake manifold, all other parts that I installed were the same. Currently I have the right side cylinder head bank running to the stock air silencer box. I am noticing a vacuum hiss but can’t detect a leak in my lines. The hiss sounds like it’s coming from the silencer box. Any thoughts? I plan to run that line to the air box using the method you mentioned once I get the time. Thanks

[@tysauce1986]

I don't fully understand how this helps to cure the sludge problem.

[@ryanmartinage]

The access to that rear PCV port is impossible without taking the top end apart..

[@martinbuilt]

Well not impossible but extremely difficult.

[@ryanmartinage]

@@martinbuilt any words of advice appreciated lol. Would this be the same on a 4.7HO?

[@grandtheftdaddittv5418]

Just tell everyone to buy the new hoses before they start. I did this a year or so ago and found the hoses we all rotted. It’s even funnier because it all started with wanting to clean my throttle body.

[@martinbuilt]

Yeah new hoses are the best. The old ones like to split at the fitting.

[@barrybruckner4334]

hit it twice bwahahaha good one always like your videos

[@nobsatthistime]

One of the many reasons why you should say away from the 4.7 Liter Engine.

[@ChrisB-cx6td]

4.7 is a good motor if taken care of . Have 200k + and is strong and smooth