Jeep 4.0 LITER Crankcase Vent Problems. CJ, YJ, XJ, ZJ, WJ, TJ, 4.2, 4.0, 2.5 6cyl / 4cyl
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- เผยแพร่เมื่อ 25 ก.พ. 2022
- If you are getting oil blown into your intake tract, air filter box, or onto your air filter, check the integrity of the Continuous Crankcase Vent System. There are two ports on the valve cover. One brings in fresh air, and the other is a metered orifice that connects to the intake manifold to provide vacuum.
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![Jeep Cherokee: CCV System & Valve Cover - How to Replace Elbow Grommets/ How it Works [‘96-’01 XJ]](/img/n.gif)
I stand corrected. The 4.2 had a PCV system. The fuel injected engines used a CCV system.
Either way ( CCV or PCV) they do the same thing. It’s not that big of a deal… well, until you get to the parts counter and the guy tapping on the keys can’t find the part because he’s looking for PCV valve.
Part names do matter, but these two do essentially the same thing. 🤙
But I got another one for ya 😁
Is it a distribution block or a proportioning valve! 😄
@@Ikillintel1 front / rear is prop valve. left / right is distro block
Just had this convo on 3 differend parts stores. And they kept looking for a pcv... I spelled it ten times... Eventually got the old one cleaned out....
so the 89 4.2 the front is pcv and the rear is ccv?
@@jchiopsj8932 thats how it was on mine and worked good. I reckon there might be somekind of baffle in one if them but it shouldnt nake a difference which way you put them as long as the ccv goes to aircleaner and pcv to intake or carb (if im wrong please correct me I dont get a hissyfit)
Thank you! Been trying to figure out why my air filter has been filling up with oil. You are the man!
Glad to help
You might have just saved me a TON of time/headaches. I recently got a 94 YJ and noticed a little oil coming from that breather tube and landing on the air filter which I also assumed meant I had a blow-by problem. I will definitely be checking that after work!
Glad it helped
this was good info. I just got an 89 a few days ago and are trying to diagnose this problem
Thank you very much...for explaining how the ccv works on a jeep...I had no idea about the direction of air flow in the system...now I completely understand what is going on with my jeep...great job and video...thanks for your honestly and telling us the truth...before we get blindsided by the other people who don't have a clue about what is going on...I'm looking forward to seeing your next videos...and again thank you very much for taking the time to help us maintain the best performance out of our jeeps...🇺🇸🇺🇸🇺🇸💪💪💪💥💥💥⚡⚡⚡🏁🏁🏁
Thank you for the kind words
@@superb60ce 🇺🇸🇺🇸🇺🇸💪💪💪💥💥💥⚡⚡⚡🏁🏁🏁
You're definitely correct! I had copious amounts of oil going into my air filter. I changed both ccv valves, problem gone instantly! I change them regularly now at 50k. No problems since! I have 2 Xj's. 👍🇺🇸
Thanks for sharing
When you changed those valves did the rear one come with that formed plastic tube?
where did you get them? I can only find them on amazon
Thank you!! Not a lot of good content for 4.0. Was about to buy a new engine too!! About to check that out.
You just made my life easy refreshing my 1988 yj
Glad to help
1:42 thanks for that info! I always wondered why CCV and not PCV. If there were both… awesome thanks!!
I’ve found good replacement nylon lines and fittings. They get brittle especially old and overheated
Glad it was helpful!
Good explanation, I just changed mine 2 days ago. When I purchased it I asked for a PCV and wasn’t corrected so up until 2 days ago that’s what I thought I was working with. I had only bought one so after realizing there was 2 and having to cut the first one out as you mentioned I went for the hunt online for the second one. I come to find out they are sold in pairs and it’s called a CCV, I then researched CCV! Here I was thinking all I was doing was a valve cover gasket job and now I’m thinking this is the reason valve cover gaskets prematurely fail on these. I do believe changing the CCV helped with a smoother idle as well, I do not believe mine was completely clogged as I don’t have oil on the filter but it was dang close! Now onto throttle body cleaning and new injectors………have a good day!
Glad to help
Thank you so much for that explanation. Helping my son with his 2006 jeep unlimited.
Glad to help
This video was on my home page and I'm glad I clicked on it. I've had 5 4.0's, I have a ZJ where the previous owner replaced the rear air tube with heater hose and so it collapses and might be the reason I'm getting oil in my air intake filter. I'll get it replaced and hope for that improves. Cheers.
Glad to help
Holy shit thank you, finally a clear answer to whats going on in my XJ
You're Welcome
Awesome video man! You gave me some good pointers for my 1999 TJ 2.5. Thx
Glad I could help
We’re does the line run or does it have a line the metered Orphice?
Cool! You just answered several questions. Thanks man, now, also, on the back side of my air filter housing there are two nipples side by side. On my manifold there are two there too. 🤧 I noticed there were no hoses hooked up. There were only nubs from the old hoses.
I plugged off the nubs on the manifold. The other two are still open. There seems to be a lot of oil pressure pushing the air out of that opening where the plug is. Vapor is coming out all the openings. The rubber on the front and back plugs is like you said. I gotta replace those. I can’t believe that’s all it is but then there’s that vacuum you mentioned and maybe that’s it. Oh well thanks man. I love this motor. 🤧🙄
Guess it is time for an updated video on this topic
Regarding the 2.5, would apply to some issues in my 86 Comanche, so I will be on this. Thanks again.
No problem 👍
Great job and excellent explanation.
Thank you!
my 95..2.5 .....now got good sound advise thanks to you and your explanations of the side cover mysterious meter connect...thanks again adam
Glad to help
@@superb60ce how come my 2.5l valve cover has two ports on top?
@@Dabestshindig what year?
@@superb60ce 1987
@@Dabestshindig Carry over from the original 4.2l derived 2.5l 4cyl. You have PCV system
Well shit I just learned something new I've literally been up all night working on my '95 4.0 Sahara I was almost ready to give up and be done with this thing when I took my valve cover off and checked them out the one in the back was trashed I'm heading straight for the parts store when they open .thank you for your time and knowledge I've wanted a jeep since I was a kid and now at 44 yrs old I finally got it and when it comes time it will be sons thanks again lm looking forward to some more videos maybe some on how to get more horsepower out of a 4.0 on a budget or something lol .
I would also recommend updating the 95 with a 96 or later valve cover...mush better oil baffle system
Excellent and thank you. Great info and application
Glad it was helpful!
THANKS A WHOLE LOT! That was an easy fix for my 1986 Comanche 4.2 . It made my purchase a STEAL!
The 4.2 uses a different setup for the pcv/ccv system....just be aware
Yup this is spot on for the 2.5 and the 4.0
Thanks
Hi mate that’s a handy bit of information thank you
No problem 👍
I swapped both of those out (including the grommets) when I did my valve cover gasket.Like you said,they were petrified.
Would you happen to have the part numbers or know the correct name for those pieces?
Same. I had to cut the absolute bejeezuss outta' mine, and luckily managed somehow not to get any of the hardened chunks down inside my valve cover.
@@Dayton504 I think they are referred to as crankcase vent valve by a lot of parts places. I have been trying for a few years to find them because I referred to them as CCV valves & nobody could find them. My boyfriend finally saw them on a site as mentioned above.
I had the same problem with my 4.0 mj and I just replaced the vac hose because it was taped together from the last owner. And this video explains everything
Happy to help
Great advice I'm checking my back port
Glad it helped
Great advice. Thanks
Glad it was helpful!
That’s right did an engine swap in my yj had that same problem
It is common
Great video
Glad you enjoyed it
My '02 whistles when engine is warm and "idle" (either at 0mph, or coasting while moving). For 3 years not able to locate the source, so just put up with the noise. Then a couple weeks ago looked at that CVV system and recalled that I never replaced those since I bought it about 6 years ago. I ordered the parts, and getting psychologically ready to chip off the O housings.
Just use some patience when removing the seals...they will be petrified
Thank you sir
welcome
Ty.
You're Welcome
Hello, thank you for thw bery informative video. I have a lot learn.
Would the problem you're describing also make oil seep out if the filler cap and the pcv/ccv?
I have a 1988 YJ Wrangler with the 2.5 L engine. I cant seem to find the right parts to do the maintenance you're showing.
If you know what parts would fit my Jeep, I'd be immensely grateful!
Thank you!
It could, or you may just need to replace the rubber ringed filler cap (never liked that design)
Nice one my friend, I just came by this video looking for info about the location of the oil catch can. I have the 4.0 TJ and was wondering where to put it. There's lot's of video's on YT and what strikes me is the following. There is a port on top of the valve cover in the front and one in the back (like you showed) Both go to the intake manifold. The front one goes via the throttle body into the intake manifold, the back one goes directly to the intake manifold. I've seen both the front and rear ports being used to place the catch can. My question is, if I understand this video correctly, that I have to put the catch can between the front port and the point where the hose goes into the (hard plastic) air filter tube, is that correct?
Yes. Put the can between the air box and the front port
@@superb60ce Thanks my friend, I can work with that ;-)
Have a `91 Jeep Cherokee Laredo 4.0HO. Replaced valve cover gasket that had seepage with a Fel-Pro VS50522T gasket from Rock Auto. Valve train is clean as a whistle. Use Castrol 20W-50 conventional oil. Now oil is leaking what looks to be front oil pan timing cover area. Engine has got some miles but doesn`t smoke. Don`t know if any blow-by but didn`t notice any oil in tubes that connected to front and rear valves on top of valve cover. Was wondering if there is any pressure build up in the crankcase that caused seepage but now you got a new gasket on there and oil is leaking at front oil pan timing cover area. Not going to change to the black late 90s valve cover. Don`t look as solid as the early 90s. Can try blasting some air thru those valves if you think it will help.
Remove the valve cover, then remove the oil baffles from the inside of the cover and clean them. Re-install everything and use new PCV / CCV valves
like your video .
Thank you
I drill the rear one out with a 1/4 drill bit. Work much better and stops the rear main seal from leaking.
1/4 inch might be a little too large, but I see where you are going with this
Excellent information! I'm new to Jeeps and just got my 79 CJ5 with the 4.2 running after 10 years and I am getting a lot of blow back threw the oil dipstick. I did install PCV valves on the valve cover. Could that be part of my problem???? THANKS
Good luck!
Good info video. Any pointers on installing a 4.0 H.O. once the 2.5 is removed
Patience
Your video is extremely helpful only problem is I have a 1993 xj 4.0 I can’t find the metering valve anywhere because mine has the locking ears, not the push in type, my valve cover was gunked up bad all my stuff was plugged now I can find that valve to finish my job
Best bet is to convert to a 96 or later valve cover,,,it has a better oil baffle system anyway
@@superb60ce yeah I’ll probably just grab one from you pull mines pretty charred anyway thanks for the advice good video
I went to AutoZone today and ordered a PCV valve they gave me the PCv valve elbow but I noticed it did not have the metered orifice to allow some air for the vacuum it was just a tube the same size as the opening so I'm guessing if I were to install that would that cause too much Blow by
This is the one that is metered www.autozone.com/emission-control-and-exhaust/pcv-valve-elbow/p/dorman-pcv-valve-elbow-47057/860943_0_0
I have a 1990 jeep Cherokee. And can’t find a Pcv valve elbow online anywhere for it. Do the 4.0’s have a universal fit? Wondering if I can buy another years part.
You have the RENIX injection which used a different vacuum system. These are the parts you need. www.rockauto.com/en/moreinfo.php?pk=586586&cc=1179996&pt=11784&jsn=1046 www.rockauto.com/en/moreinfo.php?pk=14900&cc=1179996&pt=11785&jsn=1039
Super B, Question: would a CCV valve / grommet from a 4.0L Grand Cherokee valve cover fit to a '92 4.0 Wrangler YJ valve cover ? Great video! Thanks for posting!
Yes it should
@@superb60ce Thank you superb60ce, I'll get them then...
Having an issue now that I cant figure out. I'm on my 5th attempt. I keep getting oil leaking out the back of my Valve cover gasket. Pcv isn't clogged. I'm wondering if the pcv combined with a clogged oil drain is causing it to pool up and steam is working its way against the seal
Year?? I recommend converting earlier models to the late model steel valve cover, much better oil baffle and a better gasket design
I’m getting gas fumes coming from gas tank and extreme pressure build up when I open the gas cap filler. I have a 1995 Jeep Cherokee xj limited. What could it be??? I’m stumped . I heard evac but not sure what that is where to look. Thanks
You probably have a blocked evap line from the tank to the charcoal canister. Find a local shop to confirm
thanks
You're Welcome
I bought a 1983 CJ7 that has some weird stuff going on with its straight 6 hoses. ( the CCV/PCV or whatever you call it are just connected to themseslves, and there is an air filter where the Oil fill cap should be. ) I would like to fix it, but i'm a noob and have no idea what parts I should order. Do I search for CCV or PCV for the backmost one ( both of them seem to be leaking anyway so I should replace them ). Also what do you call the front most one that goes into the air box?
Rock auto and search for PCv under emissions system
I came across this video while trying to find out why my vent air goes to defrost when I'm merging onto a freeway. I suspect a small vacuum leak somewhere because everything works okay at normal city speeds. Would a clogged CCV cause the air to divert to the default blower position (Defrost and Floor) when the 4.0 is revved up or more "Load" is applied to it? Great video by the way.
There is a vacuum reservoir behind the front bumper, check from there all the way back to the engine for leaks...I will be doing the same when I install my new engine later this year.
@@superb60ce Thanks. I found out about that canister a few years back. It's always the first thing I check. My whole vacuum line deteriorated so badly that I recently replaced the whole line with a new one. Air blows great now from the dash vents until I push down on the skinny pedal and put some load on the engine. Then the air goes from dash vents to defrost. I saw your video and thought maybe the CCV is starving the vacuum when I load up the 4.0. What do you think? Could the CCV be partially plugged or maybe the rubber grommet is dried and cracked? I do seem to get oily residue around both ports on the valve cover.
@@bluemaltese1 check the check valve at the intake. Other than that, re check all the lines. I am chasing the same issue, could also be tired motor.
@@superb60ce I replaced the rubber ends on the PCV (CCV) tube from the valve cover to the intake manifold and it fixed my problem. I now have good air flow from my dash vents even when I put the 4.0 6 cyl under load climbing a hill. My rubber ends were dried and cracked. It only cost less than $8 and took 10 minutes. Part # 47128. I have pictures but don't know how to attach them.
I change my plugs now I am hear popping noise and engine shake when I shut it off. Any help.
So the metered orifice/pcv valve on the 4.0 has no ball and spring like a regular pcv, but just the small hole we see?? And the front going to the air filter box is really just a wide open elbow right??
That is correct
@@superb60ce Thank you, I kept shaking it waiting to hear a rattle.🤣
Trying to find the ccv metered orifice for my 87 Cherokee 2.5L, any advice cause I can’t seem to find it anywhere
Should be two vents on the valve cover, one of them is the metered orifice.
I have a 87 YJ and 2.5 and both elbows are on top. Originally it had a canister style in the rear, not sure if that was stock or not but was curious if the back needed that style or i can just put in a regular PCV valve. Thanks
Not sure
The same on my 87 2.5 pvc valve in front and canister on rear.
Hi… what affect does the charcoal canister have on the ccv and how can you tell if that needs to be replaced/ cleaned etc?
Tks!
Two separate systems.
That's part of the EVAP system.
215k miles now 340k miles yea I should have done that with the head gasket
Best thing I learned was overheating fix. Don’t delete or use cooler thermostat. Use OEM about 195 thermostat. It didn’t make sense to me, but it keeps the coolant in the radiator long enough to actually cool down instead of circulating, hot coolant.
I had overheating after water pump and head gasket replacement. Added fan shroud that brought I down 10 degrees. The right thermostat at the right temp solved overheating for good
You would think a 165 opening at a lower temp would mean it runs cooler. That’s not true at all. Coolant needs to be cooled to have a cooling effect. Otherwise it just keeps everything hot. Let it sit in your radiator long enough to cool down ;-)
Yup
so is the rubber replacement part for the 2.5L engine "elbow only"?
yes
I’ve got a 1993 with a 2.5… 106,000 original miles. I’m getting condensation in my air box that’s a little foamy and smells a little oily. I checked the top rear fitting and it’s clean but inside the valve cover looked dirty there but not in my oil fill… it was 46 below zero and I think I had frozen condensation issues. NO COOLANT SMELLS… Thank God. I’m going to remove the valve on the side and see if it’s clogged… hopefully this is the fix. Thank you.
Update… I took the valve on the side of the valve cover out… plugged solid. I cleaned it and now the top hose connected to the air box has a vacuum draw instead of blowing oil into my air cleaner. Problem solved… Thank you sir!
Good stuff
Any idea of part numbers or where to get the hoses to replace? 94 YJ 4.0L here.
I don't know the part numbers off hand, in many cases, I have just scrolled Rock Auto looking at all 4.0 HO engined Jeeps till I find what works
What do you think about adding a oil can for collection instead?
Why, the factory systems work great, and keep everything (water) out of the engine except filtered air.
Hey man. I just thought I'd provide a little bit of information that I'm gained from my research back. A few years ago, my brother had a rear main seal leak in his jeep xj and we're like man. We don't wanna we don't wanna do the rear main seal... So I did a lot of research and came across the fact that the rear CCV orifice. Is typically too small. A diameter and the inline 6 gets high case pressure, which leads to oil being pushed out the rear main seal. So what I did? What we did is we put a big fat like half inch line coming out of that back orifice CCV. And it' stopped leaking. , so I'm just sharing that with you alright?
Thank you.
Yes they will overpressure, the fat line can mitigate it, but I have found that by doing old school PCV maintenance, IE replacing the orifices every 50k miles or so as well as the aft line, I have no problems
Would that being broken cause an evap system CEL? Trying to find a leak on my 02' 4.0L TJ
They are separate, unrelated systems.
Can you help with how to run a F.A.T.S vent system with CCV?
For a non emissions 97 TJ 4L. dedicated rock crawler, roll overs on roof are common! When on roof leaks all oil out unless recovered quick. I think most of it comes out of front valve cover vent into air cleaner tube, if the nose is down (upside down) as filter get soaked. tried one way rollover valves that doesn't work so I'm going with supposedly proven FATS: Fuel Air Trap System Search, 'How to Keep Fluids in your Rock Bouncer' Controlling oil leaking out at valve cover vents needed but how do I deal with the CVC? If I plug it it wants to stall if I leave it open the idle is too high. Do I move the metered orifice at the end of the hose routing of FATS? .. sorry long question.
Yes, run a FATS (hose around the engine) from the front port and put a catch can between it and the air filter box.
@@superb60ce Thanks for reply. Using front vent for FATS should work in majority the rolls that are nose down when upside down, what about when Jeep upside down level or leaning towards rear? The rear metered valve will flow oil (slowly but will leak) I'm thinking two separate FATS, the rear is still connected in the same two locations but just do FATS loop in between around the engine??
The rear valve cover vent would be more likely to fill the intake manifold (when upside down) & cause hydrolock if plugs weren't pulled/cleared before startup.
I have a 1980 CJ5 with the 258 engine. PO put a 2 barrel Ford MC2100 carb on it. On the front of valve cover he put an oil breather on it. the back has the pcv vlave on it with hose going to carb. is that set up complete or am I missing something? Thanks!!
That sounds about right
@@superb60ce thanks!!
Yes hi I have a 2003 Jeep Grand Cherokee I've changed the spark plugs did smoke test found a few vacuum leaks change them when my truck is in drive and I'm at a stop sign I get a vibration I have no idea what it is cannot figure it out can you please help or get some ideas of what it could thank you
Not an expert on Grand Cherokee Transmissions, but I recommend you get yours checked
I have a 1991 YJ 4.0 liter & the both "valves" have wings like the oil filler cap that have to align with notches & all I can find are the round kind like you showed. Any suggestions where to get ones for my Jeep?
best bet is to upgrade to the later valve cover
Quadratec has it, Crown Automotive 53030492 Rear PCV Valve Elbow for 91-93 Jeep Wrangler YJ, Cherokee XJ, with 4.0L Engine
@@ibberman thank you!
If my valve cover gasket is leaking oil then obviously air is getting in as well and it’s not venting properly correct?
If the leak is bad enough, then yes
Need help Egr valve for 89 Cherokee xj 6 cylinder 4.0 has been discontinued. Need replacement option for smog any ideas?
Good luck, try a pick-a-pull
Where can i get the ccv, nothing is found at oriellys or autozone when i look it up
shop.advanceautoparts.com/p/carquest-pcv-valve-pcv574/10015456-P?searchTerm=pcv
So if it’s not getting to the air filter it’s not bad or if it’s in the tube change them out?
If the filter is not getting oil soaked...drive on
@@superb60ce cool thank you.
Where can I find a pvc & a ccv valve for a 1993 Jeep Wrangler 4.0 liter?
RockAuto search under 95 wrangler exhaust and emissions system pcv hose. front is w/o orifice rear is w orifice
hey great video, but where does that side vent go to? btw i have a 97 tj
I assume you are referring to the side vent on the 4cyl valve cover. I goes to a vacuum port on the intake manifold.
@@superb60ce thanks man
How about the valvecover there's something there to also look a to 89mj comanche 4.0l
Yes, the earlier cast aluminum valve cover oil baffles should be cleaned if they are clogged.
Not a Cheez-it video, but cheez-it was a background actor!
Thanks very helpful knowledge. id like to link on other formats. I need all the help. Please. What ever is best for u.
Great suggestion!
I have a question. Are the 2 valves on the 4.0 the same type? I need to replace my front one bc it's broken, but want to replace the rear as well. I've seen both with small and big orifices. Is the front small and rear big? Or, are they the same?
Rear is small orifice
@@superb60ce thank you. So I need 2 of the same type (small orifices). Correct?
@@puddlesmacker No, Small orifice in the rear. Large (no orifice) in the front
@@superb60ce ok...thanks for clearing that up. Be swapping them out shortly
Thank you, very very helpful!
Glad to hear that!
Could you replace the valve with a crankcase push in breather on a 2.5?
The open vent (line that rins to aircleaner) could be replaced with push on filter breather
@@superb60ce thanks for the reply!
Is there an advantage to plugging the airbox on the 4.0 and putting a filter on top of the valve?
Nope
@@superb60ce is it bad to do?
@@highwayxj9397 It will make for a stinky engine bay
@@superb60ce you’re a stinky engine bay!
So which one has the small orifice elbow front or back I accidentally installed metered elbow on front of my friends jeep what will that cause to happen?
On a 4.0, the rear port does
@@superb60ce what will happen if I installed metered elbow up front and one is on back also
@@robpaul7900 The crankcase will not vent properly
My ccv on my 2.5 kinda just plopped out, could that be causing my engine to burn oil? It kinda shrank up and became a piece of rock
Probably not. I suspect your 2.5 is burning oil because the rings are shot.
@@superb60ce that’s fine, I have a rebuild kit on the way anyway, I’m sitting at 350,000 miles, so that’s not surprising
Now, where can I find this part! I’ve searched and cannot find it for an 89 jeep Cherokee with the 4.0
The 89 Cherokee 4.0 was a Renix and used a different PCV system
@@superb60ce gotcha.. I am getting oil into the air box and my setup looks similar to this one.
Got a link to the replacement of the pcv?
The physical replacement of the metered orifice?
Can you just put a breather cap on the rear ?
You could but that will create a stinky garage....plenty of older, pre emissions control cars just had breathers on the valve cover.
Are both vents metered on the valve cover on 4.0?
No, only the rear vent is metered.
My dad originally bought his Jeep Comanche inline 6 4.0 XJ and at from GA it's a Jeep command she ain't at and it's a 4.0 anyways he bought it for $2,500 I'm buying it for $2,000 I'm fully rebuilding it these as a lot of rust on it I'm fully rebuilding the engine and the front bumper is trying to come off in the rear bumper so I'm going to put a little bit heavy dish in front bumper and Military engraved rims and tires on it because they has it has the original Jeep command she tired rims on it
Glad you are trying to save it
Hi sorry my tube broke so how can I remove that piece around to fix one straight
Which tube
What about if it’s blowing oil out of the dipstick I beat the hell out of the jeep it’s a woods toy but I don’t wanna keep adding oil to it and also I don’t want an access amour if oil all over the motor
If you are blowing it out of the dipstick, the crank case is over pressurized. I would replace the CCV ports and hoses
Is it possible to simply just take the rear one out and clean the hole out?
Assuming it isn't stuck
@@shiftyguy_1146 It is stuck, you WILL destroy it to remove it
35K miles with no oil change and my TJ is going strong
Not sure if you typed that correctly. I would never recommend that long of an oil change interval
@@superb60ce Oh I typed that correctly. We used to ride these babies for MILES. Seeing if I can stretch this to 50K and beyond
I just got a 94 jeep Cherokee it's blowing oil out the cap and dipstick I need help
I would start with the valve cover vents as discussed in this video. The crank is over pressurized probably because your vents are old and blocked.
Awesome video thank you. I have some common sense and was left scratching my head when I went to a mechanic and asked for a diagnosis. He explained that I needed to have my old engine rebuild or replaced. 92 Cherokee with an old engine and very low mileage . He never even checked the mileage.
My 4.2 has a vented cap on each no tubes running to anything. Is this an issue?
Depends on the year and emissions package, I would consult your service manual
@@superb60ce i took off the emissions. Not sure the year of the engine, the previous owner replaced the 2.5 with the current 4.2
Is this part of the evac system?
Not really, and do you mean EVAP system?
My crankcase breather hose is discontinued an it broke what do i do i have the 2.5 an the front portion of the hose is what i need which is discontinued whats the fix this sucks
The 2.5s suck to work on because of lack of support. All I can say, is find a competent mechanic that can cobble something together to make it work
Can i put a catch can on that hose
@@user-jq2nr2tr2k dont see why not
Anyone got a part number or what the part is called? What I find is like 150 bucks, can’t be right.
Front www.rockauto.com/en/moreinfo.php?pk=1320609&cc=1180314&pt=5052&jsn=1011&_nck=HllVxRCey1%2B2aVRDo41oQXhbegy63eH0PchVaGVs1k%2BAll0%2F%2F7FZXjBdldY0BurSU4nxEEcYmFKe35qT58jQ3b%2BhkYx21EuBgQ9FAP%2BRj3QDI%2BSBMINrOaO1V3GRPjCLGkRHH8rSLMdTjkEX4pgs3zTWT%2BA5hjNVLeez44dZuPrkveq9Jnp8wJLmODnNaXCenSNDRppfGESlIh9BZ98I1U1hgJpzOiZ1pV%2BqLjXHtKKk5aGYVIjmSga0IQmwn8p78kbMfyGDq6q08sigFbKns8JtUG8tYklZHD6CeCNCJMggDqjytOe59XfL8DctTweV
Rear www.rockauto.com/en/moreinfo.php?pk=12490837&cc=1180314&pt=11784&jsn=1004&_nck=HllVxRCey1%2B2aVRDo41oQXhbegy63eH0PchVaGVs1k%2BAll0%2F%2F7FZXjBdldY0BurSU4nxEEcYmFKe35qT58jQ3b%2BhkYx21EuBgQ9FAP%2BRj3QDI%2BSBMINrOaO1V3GRPjCLGkRHH8rSLMdTjkEX4pgs3zTWT%2BA5hjNVLeez44dZuPrkveq9Jnp8wJLmODnNaXCenSNDRppfGESlIh9BZ98I1U1hgJpzOiZ1pV%2BqLjXHtKKk5aGYVIjmSga0IQmwn8p78kbMfyGDq6q08sigFbKns8JtUG8tYklZHD6CeCNCJMggDqjytOe59XfL8DctTweV
Grommet www.rockauto.com/en/moreinfo.php?pk=13559737&cc=1180314&pt=11785&jsn=997&_nck=HllVxRCey1%2B2aVRDo41oQXhbegy63eH0PchVaGVs1k%2BAll0%2F%2F7FZXjBdldY0BurSU4nxEEcYmFKe35qT58jQ3b%2BhkYx21EuBgQ9FAP%2BRj3QDI%2BSBMINrOaO1V3GRPjCLGkRHH8rSLMdTjkEX4pgs3zTWT%2BA5hjNVLeez44dZuPrkveq9Jnp8wJLmODnNaXCenSNDRppfGESlIh9BZ98I1U1hgJpzOiZ1pV%2BqLjXHtKKk5aGYVIjmSga0IQmwn8p78kbMfyGDq6q08sigFbKns8JtUG8tYklZHD6CeCNCJMggDqjytOe59XfL8DctTweV
So where could these fumes ( sometimes ) be coming from? My jeep grand Cherokee is a 1994 , and it's my baby !! I think it's a,6 cylinder . Other mechanics tell me the engine is awesome !! HELP? My regular mechanic was badly injured in a accident.
No way can I fix this myself !! I do need a tune up.
location?
Will either of these if not hooked up make it idle rough?
If the vacuum port on the intake is left open, it will run lean
Would that be where the ccv goes to? This opening bought doesn't have any vaccum or evap lines left. I'm trying to find out where the all go..
@@davidvarnado7761 yes
What do you recommend if you have gas smell in oil?
ALL combustion engines will get some combustion blow by into the oil...dirty oil will smell a little gassy, question is how much is too much...do a compression check on your engine
@Super-B cylinder 1 is a little low but nothing that would really raise any flags. I think it couldn't hurt to replace the injectors and see what happens. I was curious of what you thought.
@@Mattmazz77 Probably have an injector sticking open and pumping too much gas on combustion stroke which is leaking down into the sump as the engine is unable to burn it. Check your injectors.
@Taylor Livingston that was my guess too. Thank you for your input.
Just remember fellas, keep your orfis clean.
Hey, no making fun of my accent...lol
Anyone have the part # for these items by chance for the 4.0?
the part numbers vary but the best bet is to check on rock auto. the front is wo orifices the rear with. Rear OEM / Interchange Numbers: 53030495, Front OEM / Interchange Numbers: 53030497
you forgot one other problem with the 4.0l, it could also be a bad valve cover gasket,....
Well, that is an easy one to spot...leaks oil, replace it
My 2.5 cj7 has two
Two PCV valves??
I have 2 chrome breathers on mine
Whatever works for you