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Jeep 4.0 LITER PCV / CCV & Vacuum System Overview. YJ, XJ, ZJ, WJ, TJ, 4.0 6cyl
This is a continuation of two previous videos dealing with PCV and Vacuum system issues in the Jeep 4.0. The Jeep 4.0 uses manifold vacuum to scavenge oil vapors off the valve train AND provide power to operate the heater / vent system as well as the cruise control. The previous videos are • Jeep 4.0 LITER Crankca... and • Jeep Cherokee Vacuum S...
4.0 Valve Cover www.amazon.com...
#SuperB60ce #JeepYJ #JeepTJ #JeepXJ
Пікірлер: 47
Thank you. I kept telling the guys I hang out with I needed to check vacuum line. The back port vacuum line boot was cracked
@superb60ce
Жыл бұрын
Leaks Leaks Leaks, the bane of a Jeep owners existence
Hi, I just bought this 1993 Wrangler 6 Cyl. with a Freshley rebuilt engine. When I first got it, It ran supper rich, black smoke upon acceleration. rough idle, slight hesitation upon acceleration and loss of power from 2500 RPM & up. I found codes for TPS and MAP. Aso found his new Spark plugs Fuel fouled. Dry and black. Now, after I changed spark plugs, the MAP, IAC, TPS and Temp sensors It runs good. but I'm smelling something weird upon acceleration. the heavier I accelerate the worst the smell. Almost smell like fuel smell mixed with some kind of chemical smell. I can't figure out where its coming from. Any suggestions. Thanks...
@superb60ce
Ай бұрын
Check exhaust, make sure there are no leaks
I m wonder if you can help me on the Thing Vacuum line how to properly connected on a 98 grand cherokee limited 5.2
@superb60ce
Жыл бұрын
Don't know, I generally don't mess with GC V-8 engines
Hi I’m from Costa Rica and I just purchased an XJ 1988 and i wonder if you have the size of both (PCV/CCV) or a link where I could buy it on Amazon or eBay. Thank you 🙌🏻
@superb60ce
12 күн бұрын
Let me check
I got a 92 ; i get fumes oil rightat dip stick line.
@superb60ce
7 ай бұрын
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
I found out the vacuum line going to cruise control servo was cut. Im assuming thats why my cruise control doesnt work. But would this also cause me to fail smog? Ive been failing due to high nox
@superb60ce
Ай бұрын
It could....running lean
Can anyone out there tell me if my 2002 Jeep Wrangler TJ (X) 4.0 litre engine requires an EGR Valve ??? Just purchased it in February and trying to nail down the lack of power in 5th gear on any kind of slope! Thanks!!
@superb60ce
11 күн бұрын
The 4.0 does not have an EGR. Since you have an X, I would guess that you have airplane gears and oversized tires...gonna suck on hills in 5th
What if the cabin air fan not working spinning I checked it on a battery it’s good so how can I get my air running right in a 96 zj?
@superb60ce
Жыл бұрын
Really not familiar with the ZJ systems, but I would check the blower resistor.
@americawehaverights3926
Жыл бұрын
@@superb60ce thank you I will check that out.
Hey ,this is just amazing information, ive also seen you replace the vaccum reservoir, just specatcular how you work and explain things. So here is my story, i got a red 96 XJ just like this one, and since i installed headers last fall, i've noticed a whistling noise and also a tick sound. So i know it can be the lifters, but i heard something collapse when i revved at a stop light, since then ,theres been gas smell in the cabin, so i got a cannister as i have no vaccum reservoir ( broken). is it ok to drive a 96 without a reservoir, if not ill get one and i will get the break booster valve to fix the whistle noise, do you know what is the size of the hose for that and what is the part called in 1:39 of the video ( the other hose that connects to the manifold ) also got a fuel pressure regulator, i heard those 2 can take away the carbon or gas smell in the cabin. can you tell me where the fuel pressure regulator is located, i would really appreciate it. thanks, and keep up the great work, your helping all of us, may the lord bless you. cheers
@superb60ce
4 ай бұрын
The 96xj fuel pressure regulator is part of the fuel pump assembly in the tank. The 96 is an OBD2 system that uses a higher pressure "dead head" system
What are the symptoms of to much transmission fluid ? I replaced the output shaft seal due to transmission fluid leaking and the transmission I assumed was low on fluid so I put in a gallon w/o checking levels . I know pretty stupid but 2001 Jeep Cherokee Sport 4.0 holds 12 quarts of transmission fluid. In reverse there is immediate transmission engagement but in drive it takes a second to build up before the vehicle starts moving . In low it immediately moves the vehicle. The oil pressure at idle is 25-30 and when driving it’s 45-55 .
@superb60ce
3 ай бұрын
If you have too much fluid in the AW4, it will blow out the fill tube when hot....thats how you know
@user-qw6lo3dj1i
3 ай бұрын
@superb60ce I never had fluid blow out the fill line , I did take some transmission fluid out and got the same issue with sluggish acceleration when in drive . Can the spark plugs be a issue with this set of symptoms and also what is the distributor bar thing that sets on the plugs ??
I'd love to know where that mid throttle whistle comes from after you install one of those BBK 62mm throttle bodies. I even machined my throttle body spacer to 62.5mm to match.
@superb60ce
Жыл бұрын
I have a BBK on my 4.6 stroker in my CJ and do not have any whistle. I would suspect the spacer...they dont do anything anyway
@ToBeAnnounced000
Ай бұрын
The whistle is from the throttle body spacer all they really do is leak.
Well I got a 1995 Grand Cherokee when I brought the car it used to only smoked out the tailpipes when I'm sitting still on Park letting the car run now the car is smoking when I drive and not smoking when I'm in park I actually fixed them two lines on top of my motor like you said but I'm still trying to figure out why do we smoke when I'm driving but not when I'm sitting in the park can you help me
@superb60ce
5 ай бұрын
are you sure it is smoke. fuel Smoke (rich) is black or dark grey, water vapor is white, oil burn is blueish grey
@mikeray5475
5 ай бұрын
@@superb60ce yes it will smoke up a block but it's not the smoke u get when your engine bout to go.light grey.and yes my oil disappear like every week every since I had the jeep last June. When I first broke the Jeep in June it used to smoke only when I let it idle and Park it never smoke when I drove the Jeep now is vice versa is smokes when I drive but not smoke when I sit in park
thanks for this, what is the part number for that first check valve? I can't find it anywhere
@superb60ce
5 ай бұрын
a lot of part store will refer to them both as PCV valves, the front one is without orifice, the rear one with....check rock-auto and search thru ALL the Jeeps with these engines and you WILL find them
I have a 98 cherokee I get a rough idle but driving is fine, I've changed spark plugs, wires, distributor cap and rotor, went to do injector o rings but they were all good but noticed one connector was corroded, cleaned that up and it got rid of my missfire code but I still have a rough idle. Any tips on where to check next? I was thinking pcv or vacuum maybe. But I know my fuel pump isn't doing well so maybe that's causing the rough idle too? Thanks for any advice in advanced.
@superb60ce
7 ай бұрын
If you had one corroded connector, you need to check ALL electrical connections in the entire vehicle. Clean all connections, including grounds, and reassemble. For cleaning contacts I like De-Oxit www.amazon.com/Hosa-D5S-6-DeoxIT-Contact-Cleaner/dp/B00006LVEU/ref=sr_1_5?hvadid=557593763921&hvdev=c&hvlocphy=9010612&hvnetw=g&hvqmt=e&hvrand=7415591679867025366&hvtargid=kwd-10889212602&hydadcr=18880_13357729&keywords=deoxit%2Bdn5&qid=1703887184&sr=8-5&th=1
I have ‘06 Rubicon Automatic leaks oil between engine and trans at high rpm, not idle. I replaced rear engine seal and oil pan gasket 3 times. Wondering if blocked ccv is causing high pressure buildup and resulting in oil release thru rear main seal. Appreciate ur thoughts … thx
@superb60ce
Жыл бұрын
Possible. I would replace both the metered and unmetered to be sure, and maybe re-do the rear main and make sure it is correct (they can be installed backwards)
I have a 2001 Grand Cherokee Laredo it has two pcv valves are they both the same parts #??
@superb60ce
3 ай бұрын
No....one is with orifice and one without
thanks for the info. to change the valve cover to newer one do i switch over to a pcv or keep the ccv on a 91 wrangler.
@superb60ce
10 ай бұрын
The CCV system is the same on all 4.0 91-06. The only thing you will change is the cover and gasket (later gasket is different)
I've got a 91 xj. Wondering if I can just block the egr valve?
@superb60ce
4 ай бұрын
91 XJ with the 4.0 HO motor does not have an EGR
@BlindDude
4 ай бұрын
@@superb60ce Umm thats why it wasnt in the spot it was in the videos.... Hmmm,, Ok Thank you!!
Mine is a 93 zj 4 liter do I have 2 pcv valves on this engine, I see one on top
@superb60ce
6 ай бұрын
Should have one metered orifices (rear) and one vent (front)
My 1993 xj has a map sensor on the rear fire wall, which connects to the intake manifold (not at the throttle body)! Will changing from my original cover ... to the cover your recommending assist me? 2nd which pcv /ccv / and gasket do you recommend to use (on the 93) with the new cover? Do you still have the item numbers! Thank you in advance Great video! I appreciate and click subscribe as well! #NEBProdsBx / #DBNEBMusic / #OTBST
@superb60ce
Жыл бұрын
I will always recommend replacing the OBD-1 (early HO) valve cover to the later steel cover. The oil baffle is that much better. As far as PCV/CCV valves go...check rock auto under 96 cherokee
I dont get why its so hard to find a video that shows the sound lol..... Every single video I have seen just has some old white blue collar guy trying his hardest to explain the sound and solution.... Just show the sound!!!! lol
@superb60ce
4 ай бұрын
What sound? The whistling sound of a vacuum leak? We use a smoke tester to find them because it is almost impossible to detect