Other people have waisted their time posting videos but miss every important information your very detailed and a blessing my guy bless you 🙏🎉

Ur an absolute legend for this video.

I know a lot of people have said something similar to this already, but I can tell you that I never would have attempted replacement of my valve cover gasket if not for this video. I was dreading taking the intake plenum off but having this video as reference helped immensely. Thank you so much for all the information you’ve added to the Xterra community.

Great, detailed description of the process and what to look out for. Since I just did this procedure I have my own tips to offer: 1) If your vehicle is nearly 20 years old and the intake has never been removed, then do yourself a favor: Don't play around trying to remove the hoses and fiddle around with the clamps. Get in there with a box cutter and slice them apart because you should not even think about reusing those hoses anyway. When you go to install the new water hoses at the back of the manifold don't use those cheap worm gear hose clamps. Use factory spring type replacements or double wire type - they provide more even clamping force around the entire surface of the hose. 2) Those old Nissan quick release wiring connectors will not come off easily if they've been baking from 20 years of engine heat. Be prepared to have them disintegrate in your hand when you try to release them. One thing you can do to help them release is to shoot a jet of silicon spray into both ends before you start squeezing them. The baked in dirt and grease plus the condition of the plastic can make them real stubborn. 3) Take a yellow paint marker and mark each harness connector and EGR/vacuum lines before you start pulling things apart!

I have an 03' Xterra SE and these videos saved my ass countless times when I'm wrenching on ride. Thanks for the effort bro!

Rob, it's Oliver I successfully changed the timing belt when I changed the water pump. In large part because of you. You instill confidence! Thank you

I’m about to get to work on my valve cover under the manifold, and let me tell ya, you are a life saver! I love your videos and what you do for the X community! Keep em coming!!👍🏽

Bout to replace knock sensor and wire in California on my wifes 98 pathfinder. Just got gifted this truck but it lived in Florida so will have to get star smog to register. Going to fix this stuff and keep it all smog friendly so no relocation or modifications. Really Incredible resource you have given us here. Top notch man!

I just got done doing mine. Wish this was uploaded about 3 months ago. That’s when I started mine.

Rob this is one of the best videos I have ever seen. You were so articulate and explained everything that I feel I could do this repair myself. Thanks for tanking the time to make this video and helping me and others that don't have the experience you do. Sincerely, Vince R.

I want to say thank you!!! The screws on the side of the throttle body are PH3 (i almost stripped one using the common PH2), the nut on the EGR tube is 30mm. That was my only close call, the rest of the job went flawless. Thanks again.

I did the same coolant bypass and it works. Pulling the manifold is now a breeze. Oklahoma

Xterra Rob is everywhere 😆 every time I need something this dude already did it

Thanks Bob, wish id seen your video before. This is the best explanation of how to remove the plenium intake manifold. If its just a leaking water hose DO NOT DO IT unless you live in a cold country. Just bypass it. Hope this helps somebody.

I bought a Xterra 04 in Coyhaique, Chile... Its just like the one that you are working on this video and I have to tell you that you have helped me a lot to fix many issues that this machine had, I really like the power of the vehicle and its been a whole lot of learning to be doing the arrengements all by myself, actually Im not a certified mechanic but to introduce mechanical knowledge is part of everyday´s life. Im trying to get some other parts to improve it and to feel more comfortable when I drive the machine but in the place where Im living nowadays its a little bit difficult to find the accesories (logistically speaking). Thanks Again!

I just completed this job on my 2000 Nissan Quest. I replaced all of my injectors, valve cover gaskets, plenum gasket and PCV valve. My recommendation is to take lots of photos and videos with your phone as u disassemble. In total, I had more than 50 photos and videos and w/o them I never would have gotten this together again. Also make notes on the sequence of removal. In total, this job took me more than a week but some time was lost waiting for parts to arrive.

Thank you for this video. It answers so many questions. Greatly appreciate your efforts and contributions to the X community.

Dude. Thank you. You saved me a ton of work

Thank you for the wonderful tutorial, have to do it this weekend. You definitely helped my confidence for something that is out of my comfort zone.

Been reading your forum stuff for years. Thanks for all you do Rob.

I'm glad I watched this video. I have a leak and when I used my phone to record to see where it was coming from I could see it was the small hose attached to the throttle body. I didnt know what location it was at first until you explained the underside of the intake manifold to perfection. Trying to look at diagrams was a pain in the ass but i appreciate your thorough explanation. Helped out so much. Mechanic quoted me $400 to replace because of labor but I might try n do it myself. Thanks again!!!

I changed my valve cover gaskets 2 years ago. I used another youtube video as a guide. And I'm no handyman. Just take your time.

Thank you so so so so so so so so much for making this! Couldn't figure out where one wire went too and you made this video so in depth thank you man!

Thanks for the excellent video. This will come in handy, as I have a bad #2 fuel injector on my 97 Pathfinder.

Wanting to change my spark plugs but don't think I can get this done. Much props to you.

A “go-to” for intake manifold plenum removal and reinstallation. A tune-up resulted in the #6 spark plug remaining stuck in the heat shield tube. Removing the plenum not only facilitated removing and installing the new spark plug, but also replacing the knock sensor and the left side manifold converter O2 sensor both of which had been sending the occasional code. All of that and the opportunity to replace some hoses which were surely soon to fail. Great video for a real person mechanic with technical ability instead of a fully equipped service center film. JRA

Valve cover gaskets/upper intake manifold gasket complete on my 03 Xterra yesterday with the help of this video! Thanks man👍🏽

Rob great video, I have watched it several times in preparation for replacing the valve cover. I will say very detailed and methodical and would have to say on a decent size job its one of the best how to videos I have ever seen. I'm sure I will watch a few more videos of yours soon.

Such an informative video! The best video on replacing hoses underneath the intake manifold..Very well explained! iThank you !!👍👍33:17 33:17

Excellent video! I've just completed removing the plenum on my 02 xterra w/120K miles and encounter no surprises. By the way, after spending 15 minutes pulling on the rear coolant hose, I cut off. I'm looking forward to your other videos once I complete replacing the valve cover gasket. Thanks!

respect for doing all of this for the hell of it

👍👍DOUBLE THUMBS UP AND KEEP ON KEEPING ON 👍👍STRAIGHT UP THE MOST DETAILED INFORMATIVE D.I.Y. VIDEO EVER..THANK YOU!! XTERRA TOM.

Thanks for your videos didn’t realize how helpful your channel would end up being when I stumbled on it but, today I bought a 2004 Xterra SE and I am looking forward to using these videos to help me restore it

Dude. Big props to you for doing this job. My old Xterra had that issue where I had to disassemble that plenum. ended up towing it to the junkyard instead.

I have a coolant leak in the back of my engine, it's BAAAD. I'm suspecting it's under the manifold. I will fix this thanks to you

your the man! i gotta hose leak beneath plenum. i pondered to bypass. you confirmed it to be possible to do so, thank you. excellent!!!!

You are an awsome human being,thank you for your video,just got done changing pita drivers side valve cover gasket and because of you I looked like I knew what I was doing lmfao!!!!!

I can understand doing the bypass mod for the intake stuff... however those of us that live in places that get cold in the winter probably should leave them intact. I just ordered a pack of high performance silicone coolant hoses for my pathfinder as I've had to remove the intake once before to address a coolant hose with a pinhole. The silicone hoses will definitely inspire more confidence than those 29+ year old hoses that still remain! Now if only I could find a straight answer on the hex wrench sizing needed to remove the upper intake. Last time a buddy brought his allen sockets by and helped me do it however after ordering a set of them recently I discovered the 5.5mm is too small and the 6mm is a bit too large! Might have just been some rust in there when I tried to test fit the tool the other day... I'm gonna find out this coming weekend in any case.

Thanks Rob, I had this work done my R50 this summer, replaced valve cover gasket, 6 injectors, fuel regulator and spark plugs. The EGR hex nut is a b*tch and the coolant hose at the back. It took me a good half hour figuring out how to maneuver my tools... very very tight space back there, fast forward 2 hours later, I was able to unmount the upper intake manifold plenum. I had a misfire after putting it altogether and after 2 days of troubleshooting, it turned out to be a vacuum leak on the PVC hose.

Thank god for this video and yourself sir I just got back from a long 1300 mile trip in my 92 patty and my number 6 injector decided to stop spraying a day after we got back lol. 5 years that it’s been intermittently. Also gonna do my valve covers and knock sensor since I hope to never remove this manifold again.

One of the best videos out there regarding this job, Thanks brother ✌

Rob, if you were my neighbor, I would pay you to do this work on my Frontier VG33E motor ! This thing has been driving me nuts! Those motors are definitely too close to the firewall!

Thank you - great resource!

I'll give you credit for being positive because they are a pain in the ass to work on they got a cooling hose right up against the back of the firewall and it goes into the manifold it's almost impossible to get to good lock I hate working on newer vehicles

Thanks man this detailed video saved me a bunch of money. I also tried the coolant mod. Keep up the good work. 🙏🏾✌🏾

Great video bud. now do the rear main seal I have a 2003 nissan xterra and I need to do the rear main seal.a instructional video would be much appreciated my friend

Great videos, keep them coming. If you've done this 10 times, it's just a few more bolts to replace the knock sensor properly.

Can't thank you enough for this video bro! I'm about to take this crap on and it's not gonna be fun. I'm in Lake Havasu City Arizona in the summer. We are averaging about 115° to 120° right now. I'm gonna have this video on the TV ready to go when I start.

Thank you this gave me a better understanding of my Pathfinder although I'm not attempting it I believe my injectors are clogged

Thank you so much!!!’ With your videos help I aced my project! Whew! 🙇

Very very very much needed. Challenge you to remove the lower intake next lol

This video or very very good and thanks to this guy to show a lot of good things from

After seeing you have to mess with all that egr stuff it makes me glad that I dont have egr, keep up the great videos rob

man thank you for uploading in a decent resolution! all the other videos ive found were filmed with a 30yo potatoe

HUGE P.I.T.A. LOL. Been there done that and got the oil stained t-shirt to prove it HAHAHA big thanks for this video man!

What I did was pick up the intake and just unbolted the hard lines. Those hose clamps where a pain to get too

Rob thank you. This helped me tremendous

Nice video! I just did this. Taking care of brittle valve cover gaskets.

Thanks for your vídeos.

We have a1999 Frontier 3.3 v6 and this was just what I needed to do a IACV replacement. I don't have torque specs and I did tighten it down good. I hope not to much. While I was there I am doing a fuel injector replacement. Instead of ordering some knock off injectors I finally found a California company that re-manufactures fuel injectors for less than half of the Nissan OEM price. They use OEM core and rebuild. If you don't distroy the injectors you take out you get a rebate for the core return. GB Manufacturing and sod by Carid. I just ordered and will give them a go with a 24 month warranty. OHM to specs. Thanks for the video. I am now looking forward to reassembly. I can't find torque specs for the 5 hex head bolts that bolt the upper intake to the lower intake. It's a 6mm allen socket and I'm putting in a new gasket. The best info I can find is around 12-16 foot pounds. I don't want to strip or bust a bolt. Any idea of the torque spec? Great video.

Great Videos! Getting ready to replace knock sensor on my 01.

After taking mine (upper and lower) off to replace the knock sensor and fuel pressure regulator, I replaced all hoses and vacuum lines, some factory some custom. I now have a vacuum leak between the upper and lower plenum. Going to remove the upper and use rtv. Hope that's all besides a coolant leak I think is coming from the fire wall connections to the heater core. Thanks for the great videos. Side note you should tighten fro the middle outward in a circle.

I literally did this on my 00 Frontier last weekend. Done it 3 times: once to replace valve cover gaskets back in '15, once to replace suspected bad lifters in Sept '19, once this past weekend to tear out the aftermarket lifters from 2019 and replace them with OEM ones. I always plug the holes in lower intake manifold with paper towel as soon as I get the Plenum off. I'm too paranoid about dropping something down in there!

I have a random misfire but when I scanned it, it tells me it’s the fuel gauge sending unit. Is this random or do you know something about this?

Outstanding video , thank you so much !!! Great job, keep up the great work.

Loved the video! Now I can remove mine! Thought you should know though, the slight fisheye lens warping of the intro makes it look like your head was bolted directly to your shoulders.

Man I was thinking about doing this to get to the 6th spark plug. I’m confident I could take this apart and not know how to put it back together lol. Guess I’m getting the shortie out and buying one of those wobbly ones lol

Great video man!

Thanks for posting I will replace all rubber hoses clamps and everything else when I do this job. These valve gaskets are a PITA I had them replaced once and they started leaking again shortly after. I think I was ripped off and the bolts were just tightened. Stealerships.

Awesome, very informative. Good video.

been looking for this for 3 years not in chiltons

Bro im a man but forreals your the man !!

Thank you for the help. Much appreciated.

THANK YOU ROB

Great video thank you bless you

Wanted to replace my driver side leaking valve cover gasket and get to the #6 plug to replace. Got about 90% removed until the rear coolant lines, could not get to them plus they were not coming off easy after 160,000 miles. Aborted the mission wasn’t worth the impossible task of trying to remove! Have to put it back together now…

Good idea, i think the intake air temperature will be low. i will make this job next weekend.

Had to do this at the shop today, ended up cutting the hoses on the left rear corner because the spring clamps were deteriorated.

Damn good job bruh

This was an amazing video 🙏🏻 really helping me out with doing my fuel injectors and spark plugs for the first time… I noticed that I no longer have the thermal element that adjusts the adle , you referenced this part 20:33 minutes into the video. The too coolant pipes that run to that heater element are capped off.. Will this cause a problem? Our is this the bypass that you were talking about??

thanks alot man great vid keep it up!

great video i was going crazy trying to find out where the bottom vacuum hose on the lower hard line went for the top air box it wasnt on my truck when i bought it,

OMG!!! I need to replace the valve cover gaskets on my daughter's '02. It's very cold out, and after watching your video I'm SO dreading this. I'd rather drip sweat like you were than wipe sweat icicles off my forehead. Your video, however, makes it even possible to contemplate doing this. I'll be watching it every step of the way. Thank you! When I'm done I know I'm going to absolutely HATE Nissan engineers for designing an engine like this! What is seriously wrong with them?!! I miss the simple old days when taking a valve cover off just meant undoing maybe 8 bolts and you're done. Oh, I'm going to be living in hell for a few days!

Dang, this is a great resource. The most I've done on my X (or any car) is the starter, passenger side valve cover gasket, brakes and soon to be radiator. I need to access the driver side valve cover leak as well, so here I am. This video is very helpful, but also added an intimidation factor lol. Curious what that little thermostatic mechanism is that adjusts via the throttle plate. Looks like where it mounts also has a small coolant leak of some sort. Curious how easy that is to replace. I feel in over my head, but don't want to pay someone near 1k to just do the valve cover gasket. Patience and persistence though, eh?! My X is at 220k, really want to give her some much needed love. If I can pull this off it'll save me the much needed dough for now. Thank you very much for the informative video!

Great video.

Been looking for this

thank you for the cimaic omg all my shit right runs great

Thanks Rob for the video! Will be doing the 2002 Frontier this week. I have used Bars leak stopper in this vehicle. I supposed this can make these rear hoses even more difficult.... Gotta go to know. Kevin

Your video is very helpful. Did you drain your antifreeze before you removed your plenum intake?

If you're taking the upper and lower intake manifold off I hope you put your knock sensor back where it goes so it can do its job

I just have a question on how you got into learning how to do all the stuff on your channel. Did you just figure it out on your own with the Manuel and other KZfaq videos or did you learn from growing up or go to school and learn? I want to start getting into the car thing but I don’t know where to start and what to learn from.

Real MVP

I sprayed intake cleaner into my t.b. without it running. Let it sit out for a couple hours and now it doesn't start! Crank but no start. Shop said I fried the idle air control which in turn fried the ECM!!!

Good video👍🏾

This is a GREAT video. I need to replace my knock sensor and need to remove the upper and lower intake manifolds. With the engine tore down that much, do you know if it would be much more trouble replacing the head gaskets too? I know how to tear down the belt system and the brackets with the pulleys down to the cam gears... But would it be worth it to replace the head gaskets? I've never removed heads off an engine and I know there is a specific pattern to loosen and tighten head bolts. Not sure what else to expect.

Hello Rob excellent videos ,! What are the two electrical plugs for underneath the upper intake plenum? One for idle air control solinoid .the other? Have good luck with your Toyota

I have been putting off doing this job, because i have to replace injectors, valve cover gaskets, intake manifold gaskets, and put my knock sensor back where it belongs, which i believe mean even taking off more stuff right????

Good video.i found out the hard way not to remove the egr from the manifold.. you will never get that bracket back on . best to remove hex nut.it kinda on there but will save you time.the only way I got it back on was to get some nuts the same size as bolt was and thread it just enough so I could put some quickstel to hold nut in position while I screw bolts back in

I have to take this off of mine because there is a coolant hose under the throttle body decided to start leaking today 😢, the horse shoe hose. What would cause my X to not fill with gas at the pump station? Shuts off every 3-4 seconds. I already replaced the vent valve purge solenoid by the charcoal canister

Thanks a Lot