Nissan V6 Replace Spark Plug & Valve Cover - VIDEO 4: INSTALL INTAKE PLENUM

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========
In this video, I will show you how to replace the valve cover on a Nissan VQ 3.5L V6 engine. This one here is the one towards the back by the firewall. The process is quite involved but if you follow the steps carefully, you will be able to do this service yourself and save a lot of money.
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Video 1 - How to remove the window cowl
• Nissan V6 Replace Spar...
Video 2 - How to remove the intake plenum
• Nissan V6 Replace Spar...
Video 3 - How to replace valve cover and spark plug
• Nissan V6 Replace Spar...
Video 4 - How to re-install intake plenum and complete install
• Nissan V6 Replace Spar...
Video 5 - How to program idle air volume
• Nissan V6 Replace Spar...
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[@alpaca7886]

8 years later.. I'm still using your quest videos for repairs. Your videos are the best out there. Thanks!

[@dial2fast]

Wow...thank you for leaving your comment!

[@jasonbusse5025]

I've been backyard wrenching for over 25 years and have gained much experience over that time. The process that you use to explain the job is exceptional: the camera angles, lighting, focus, and volume are crisp: tool explanation, part replacement, and organization are superb. You explain it the way a mechanic would want to hear it. I'm changing the same gasket on a 1997 Nissan Sentra with a V6. I believe it is very similar, other than the cowl removal. Just want to say that I appreciate this video and look forward to future views.

[@dial2fast]

+Jason Busse Really appreciate your comment. I try to do my videos like the way I want to learn it. Happy wrenching!!

[@mattmccandless3924]

This whole series rocked. Did it to my 2007 Quest. Took about 7 hours, but I am definitely an amateur. Reconnecting the upper and lower plenum was a major pain.

[@dial2fast]

Thank you for your comment. Glad to hear you got yours done!

[@michaelnagatoshi1830]

Whoa! I am about to embark on this effort, but this is daunting. Thank you for showing all the detail and the challenges that you encountered. Will do my best to emulate your good work.

[@jamesgordon1520]

I have a 05 Nissan Maxima and I have done a lot of work on it just by looking at what was in front of me, I video the area first to make sure that I put it back the same way, but you have up the whole game. Your video is on point 👍 Back in the days before video we had to get a book to see what was what and go from there and it was great of you to put the part numbers in to now that is a HELL of a Move 💪💪👍👍👍 because when you go to a dealership if you don't know they can and will BS " you on the price and I have had them give me the wrong part. So yes this video is a great one. Outstanding job.👍👍👍💪💪

[@PSPFanGRX]

This is a lot of work but thanks to your videos I had the guts to change my spark plugs and ignition coil ( firewall side) on my 2004 Quest. Thanks a lot!!

[@rayhindle642]

I have played around with cars for over thirty years, during which I have seen loads of manufacturing changes, some of which add hours and hours onto the simplest of repairs, like for instance swapping the spark plugs. I would not tackle a job like this video shows nowadays but I can, with my experience, appreciate the skill and patience required to work on modern day vehicles. Ray H (Silver surfer) from the UK.

[@brianhtttp]

Hi thanks for these videos on replacing the spark plugs. I just bought a used Nissan Quest that was running extremely rough with about 217K Miles. Was getting multiple misfires on my obd. Never have I ever taken apart a engine. But I tackled this job replacing the spark plugs and coils because of your videos and how detail oriented you were. I Was nervous that I forgot to plug something up with all of the different hoses and everything. Well I got tackled the job, started around 7pm and finished removing everything and then called it quits around 11pm. Next day I got started around 1pm with installing the plugs and coils and putting everything back. I got done at roughly about 6:30. So for me without rushing or overlooking anything It took 9 hours. But the reward from when I turned the key was unbelievable. It’s like the engine is totally different. Huge jump in gas mileage, as well as unbelievable performance. I went with NGK Iridium. Brand new coils as well. Thanks for the outstanding videos for this project. I’m sure I will be looking back at more of your videos for my quest needs.

[@CodrutMiron]

Thanks so much for your videos. I've just replaced the park plugs (without the valve cover) and it took me the entire weekend. I really appreciate you took the time to record this, edit and post it. It's detailed and very well done. Cheers!

[@dial2fast]

I am happy to hear you got it done with success. Thanks for leaving your comment!

[@jimbola77]

he is an excellent mechanic very patient at what he does!!!!

[@ironsnake78]

I've just accomplished this project. I'm not a mechanic, just a average guy who changes filters and fluids. This guy have 5 excellent videos and how to fix this 05 Nissan Quest. I hate taking it to the shop and pay hundreds if not thousands of dollars. It took me about 16 hrs to do it. watch and listen the videos and take notes before you begin. Thank alot man, you helped me save alot of money and another 100,000 miles!!!! Don't forget to watch the 5th video...

[@dial2fast]

+Jose A. Carnalla Very good to hear that you got yours done. Thanks for sharing your experience.

[@benbedford3278]

Video was well structured and informative. I will be doing plugs on my 07' Quest shortly and wanted to be pre-wired on expectations, which all seems doable. Thanks again!! It is nice of people to take extra time on their own project to help others with theirs.

[@dial2fast]

Ben Bedford Thanks for your comment!

[@mikee4216]

Thanks so much for your videos on replacing the valve covers and gaskets. I am mechanically inclined but this is a major undertaking and very time consuming. Using your videos I was not intimidated at all about completing the work. Got it done but it was still leaking oil from underneath around the oil filter area. I found your video on replacing the oil cooler o-ring which I followed. No more leaks...WAHOO! My car is a 2008 Nissan Quest but it it almost the same as your 2004 Quest.

[@dial2fast]

Thanks for sharing!

[@marcmonroe737]

Thanks for your series of videos on this job. It was by far the best ones I found on how to accomplish this job. My 2007 Maxima was a tiny bit different than the vehicle you did this job on so I didn't have to remove anything at the back of the engine bay to gain access. I was able to utilize your videos during the process to refer back to while in the midst of handling the job. Thanks for being my expert to reference on this job!

[@dial2fast]

Thanks for sharing your experience. Glad you found my video helpful!

[@chriscleeland5472]

Great documentation on a rather involved process. I plan to do this in the morning and feel like I've got a nice head start after watching your video and a few others.

[@richardrogers1644]

Thank you kind sir. Your series of videos help me tremendously. I just completed this task over the past weekend on my 2008 Quest which has minor differences. Thank you for the detailed videos that you have produced.

[@dial2fast]

Thanks for your comment!!

[@rainbowpink7327]

One thing I've notice everyone does the hard way is removing the 4 bolts connecting front and back plenum. Remove the 4 bolts on throttle body put it to the side and remove both plenums. More room to work. More room to move the wire harness. Also the two harness plugs right back side. Just pinch real hard with your finger against the bottom of where it fits on bracket. You will fill a little something to push on, wiggle a little and comes right off. Just saved you 40 minutes of work.

[@leorobinson5737]

Man you are good.... this is way too much work for me, gonna have to bring my van to the garage.

[@germannaranjo4552]

THIS IS A VERY VERY GOOD VIDEO CONGRATULATIONS U R 1 OF THE BEST ON THIS AREA.

[@dial2fast]

+German Naranjo Thank you for the comment!

[@aleung1946]

You are number one and the best, I am very admire you, you are the greatest mechanic, where can I find, Thanks a lot.

[@dial2fast]

Thanks for your comment!

[@leorobinson5737]

Awesome job...I hope you made it through Covid19.

[@EarhartAutomotive]

Cleanest Nissan Quest engine bay around

[@vk17171]

Great video series. I am watching this in 11/2023 to repair my 2008 Nissan Quest as the Right/below valve cover gasket started leaking oil, it has only 96k miles though. I used many of your videos to help me change the struts, shocks, wheels hubs etc for the same vehicle. Appreciate all the details that you put together. Now I am debating if I can do this job myself or have it done by someone else. The oem valve covers got very expensive now, over $200, there are a bunch of aftermarket available but I am not sure which ones to go with?! I am also debating to get rid of this car but I see no other minivan in market as comfy as this :)

[@thomasgilbert9347]

thank you for all the work making this video. i have a nissan altima with the same problem and same engine.

[@dial2fast]

I am glad my video was helpful to you. Cheers!

[@williamfigueroa6662]

congratulations, amigo very good video, now I can fix my nissan quest 2006. muchas gracias. & God bless you.

[@danieljohnson2295]

First off thank you for the incredible five (5) video set. The quality of video, succinct instruction and insight are much appreciated. I intend to perform the work on a 2005 Murano. Are their any significant differences between the Quest and Murano of which I need to be aware? Secondly, can you provide a bit more detail with respect to where to place the RTV gasket silicone? This was hard to see in the videos. Thank you again for your amazing public service! AS are many I am most grateful!!

[@MRHELLO7789]

Great video. Thanks so much

[@barricaderick]

Great videos buddy.

[@srengsun4572]

Thank you for this video.

[@dial2fast]

You are very welcome!

[@kenadkins5589]

Do you know what flat rate is on this? You did a great job on the vids and I applaud your expertise

[@shownough72]

Awesome job.

[@dial2fast]

+B Rich Thank you!

[@lovfrmyhart]

Excellent brother job well done give me more teaching i must say THANKS ONE LOVE BLESS.

[@dial2fast]

Thanks for your comment!

[@jeffandjoannbauer9567]

Was there a torque setting for the two 12mm bolts securing the upper collector for the intake manifold: the one you used the Pittsburgh Pro flexible ratchet to reattach? I cannot find the torque settings for those bolts in the EM section of the FSM. Your videos are great; even more so, I am really grateful that you've been answering all the questions I've fired at you.

[@kentek3141]

Excellent teaching video. You glossed over a few of the names of things: One of the last components you disconnected just before you pulled the vc cover. Missed the name of it. Also, what did you do on the 2 clamps you had to break? And what was that "thing" under the cover? What is the EGR hose? But overall good show. I am about to undertake the same procedure on my 2003 Murano. Watched your 4 part videos 2X. Subscribed and multi checked the thumbs up.

[@dial2fast]

The last thing I took out before removing valve cover was the spark plugs. Followed by all the bolts holding the cover. The 2 clips that I broke, I was able to push it back in with half the clips still left.

[@RamiAzzedine]

I did the same job on my van when I started . start making a hissing noise and goes off. ... should I go back and remove everything back again ..or some thing ..not right....thanks

[@MS-sm9ih]

Does the car run smoother now after u have installed everything, have u noticed any difference?

[@the010870]

nice job.

[@dial2fast]

Cheers!!

[@gregdixon6658]

Very nice detail in your video of tools and parts and process. i have a 2009 at 118000. I will be doing also a complete rebuild of the front end do you have any videos on this?

[@dial2fast]

Sorry I don't have any videos on the front end. I have since traded the van in for a new Pathfinder.

[@gregdixon6658]

Ok thank you very much. I will use this video to change plugs and vowel pan cover, again ty for the video.

[@xavierava316]

I have 2005 Nissan quest very similar to your vehicle too the video looks very helpful, I'm planning to the same kind of work to my vehicle do you recommend to replace the valve cover any way thank you for this video I'm sure it will be very helpful

[@dial2fast]

It depends on your mileage. If it's around 100k miles, you should replace it because both front and rear valve covers WILL leak. Since it's so much work to do this service, you should consider replacing at least the back one. The front one is easy to do at a later time.

[@oscarhidalgo7676]

Disculpe k puedo hacer intente cambiar la tapa de valvulas de atras de mi nissan maxima pero a la ahora de apretar los tornillos se me quiebro uno y parese k se me barrieron otros mas x k no tenia torque gracias si me pueden ayudar

[@docd3368]

I've been keeping my '04 Maxima rolling watching your excellent videos. Have a question about replacing the rear valve cover. Did I miss it or where in your videos is replacing a new O-ring and tightening the PCV valve on the rear (right) valve cover? Part # for the o-ring?

[@dial2fast]

If you buy the Nissan valve cover, it comes with a new PCV valve. I had my valve cover replaced around the same time.

[@harutstepanyan3776]

Hey, great and very helpful video. The valve cover gasket of my 04 quest is leaking too. But mine is the one in the front, since it's easier to change the one that covers the three front cylinders, i was wondering if there is any tip to follow before i get started. Do i have to disconnect the battery, or do i have to take the air intake off? thanks

[@dial2fast]

If it's only your front that is leaking then you are lucky. But I would make sure your back one is not leaking too because 8 out of 10 leaks are on the back one. Anyways, front one don't need to remove the intake plenum. You can always replace it and see if the leak is fixed. You want to disconnect the battery neg terminal before doing the work.

[@arturoaviles4564]

dial2fast I really enjoy your videos, great step by step process. Where do you buy your OEM Nissan parts? I own a 06, Murano and a '11, Maxima both the VQ engine. Thanks

[@dial2fast]

+Arturo Aviles I mostly buy my parts from my local dealer. Prices are about the same once you add shipping cost for online purchase.

[@stevenlorenzano5605]

I really need to see how chance injector in this 3.5 v6 engine...i have cilinder 5 misfire or how i can start testing and checking what is causing misfire and that cilinder ...thanks if you can help me...

[@raulcampos441]

Hi. Good gob you do a great gob. I have. A questions did you remplace the power steering hose ? In Nissan Quest 2004 ? Thanks for your help appreciated .

[@dial2fast]

Yikes, the power steering hose on the Quest. Yes I had to replace it, and no I did not do it. That power steering hose will eventually leak. The replacement is a pain. The hose sits back by the firewall side, and snakes from the bottom to the top and there is a bracket that bolts to the intake plenum, then comes back down. You can probably get to that bolt by removing the intake plenum. Or in my case, the shop that did the repair just cut both ends, put in the new hose and left the old one in the car. Not really how I like it done, but then I can't really blame them.

[@gogomesh]

dial2fast, thanks for the videos they were most helpful getting my sparks plugs replaced in my 2005 altima v6, one question when I was putting upper intake plenum back on one of the star studs for the EGR valve was not lining up correctly when I tried to screw it back now I'm getting a high pitch whistling/whirring sound. I'm assuming I just need to loosen the top intake plenum and reposition it so it's flush. Please let me if that sounds about right and thanks again for making this videos so average Joes can fix their cars.

[@dial2fast]

Since I didn't have that issue, it's hard to say where that noise is coming from. Make sure you are using new gaskets so you will have a good seal. I guess you can try to put your ear to it and see if you can pinpoint where the noise is. Otherwise you can try realigning the plenum and the EGR port by loosening and tightening.

[@gogomesh]

thanks for the quick reply, I'm probably going to get new gaskets since you stated which part numbers to get which was most helpful. Thanks.

[@3865roofer]

Will all the torque on valve covers and intake and every thing be the same on a 2004 s quest

[@dial2fast]

Yes it will be the same.

[@evelynnveleni]

do the gaskets need to be replaced or is it optional? I just need to replace my spark plugs.......

[@dial2fast]

The gaskets need to be replaced. Since you are changing spark plugs, most likely the mileage is quite high, so the gasket is very old. With so much work involved in doing this job, get the gaskets changed so you don't have any problems after. You don't want to do this job twice.

[@josevalle4302]

Just need the. Numbers on the pressure bolts.

[@ike6605]

I tried this without the video and yeah it was alot of work. I got all the way to past taking off the plenum but couldnt figure out to take the valve cover off. I am thinking of changing the spark plugs in the front as well as the back. So if i do that? do i have to buy both brand new valve covers? I cant use the valve cover that was there before and just install a new gasket.

[@dial2fast]

It depends on the mileage you have, if you have say 60,000 miles or more on that valve cover, then get new ones cause the spark plug tube o ring is not serviceable. I actually did a video to show why kzbin.info/www/bejne/o4raZYZooseGeKc

[@javargasmendez]

The process will be the same for a 2004 Pathfinder? Actually is leaking but I am not sure if it is from the back or front one.

[@dial2fast]

+JUAN ALEXANDER VARGAS MENDEZ I believe Pathfinder is same engine but for rear drive, it's rotated 90 degrees.

[@delsolsi213]

So you can't just change the spark plug o rings? You need to buy the whole valve cover? Its for a 03 nissan murano 3.5 v6

[@dial2fast]

If your V6 is same as this one, then no, you can't replace the spark plugs o ring.

[@Sbennett829]

do you need to drain coolant system before taking off manifold??

[@dial2fast]

+S Bennett No you don't

[@Sam-pc4fe]

sorry i meant the ignition coils. but have you had any problems with the coils going bad? also have you ran into the problem of one of tensioners on the timing chain breaking and haveing that rattling sound??

[@dial2fast]

I just replaced the back 3 ignition coils recently. Here is the video: kzbin.info/www/bejne/iJS0fZKqithkabM As to the tensioner issue, it usually don't pose a problem if the van has had frequent scheduled oil changes. I have not had this issue yet but I know many people have.

[@johnwhite3270]

Dial2Fast, Big help with the videos! I just did this yesterday on my '04. Everything seems to be going well except- and this may seem strange- the AVG Miles Per Gallon on my Fuel Economy display are astronomically low. I think on a 15 mile drive I got 9.5MPG at best. During the whole process, the only time I felt confused on what I was doing was when it was time to reconnect the green connectors. I don't know what they are for, and they don't seem to be indicative of a particular placement. They looked interchangeable- or maybe I got lucky and got them right to begin with?? Any ideas on the Average MPG? Thanks for your help!

[@dial2fast]

The average MPG I get is around 17 to 19 MPG. If the car drives well, you can try resetting the MPG and drive for few days and check again.

[@johnwhite3270]

Well, I am finally glad to find someone honest about this because one of the selling points on this old van was that the previous owner stated he average around 24 in town and over 30 on the highway. Not such an honest statement lol. Thanks for the quick response!

[@Steve-ze3kl]

Do you oil the gaskets to wet them a bit or install them dry/as is?

[@dial2fast]

+Steve Sowinski (Airlock Sniffs) Dry

[@ELGaTo2688]

Great Video! Thank you! Where can I find a similar adjustable angle ratchet like the one you have? min 5:15

[@richardrogers1644]

I went to Harbor Freight to get mine along the the hose pliers he used as well.

[@jeffandjoannbauer9567]

smile.amazon.com/gp/product/B005KL73PO/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1

[@michaelhorner9385]

Do you not have to set gaps on the spark plugs?

[@peterwong63]

The plugs are pre-gapped at the factory already. If you want, you can check with a gauge.

[@Sam-pc4fe]

why not replace the spark plug wires while you had the intake off?

[@dial2fast]

hmmm....because most cars made in the last 10+ years don't use spark plug wires. It uses ignition coils.

[@agraitlopez4485]

Sam Barber you big dummy

[@jlwzqw2008]

I did this to my van and now it's running even worse since I changed the plugs and cool pack.

[@maclandyouth]

+jlwzqw2008 If it has a high idle, then likely you forgot to re-attach a vacuum hose or one of the gaskets got out of alignment and it is sucking too much air. If it is missing, then one of the plugs isn''t seated correctly, or is threaded incorrectly.

[@jlwzqw2008]

+Chuck Scarborough thanks I will try checking the plugs I've already been through all other steps

[@edman79]

I had the same issue on my 05 Quest. But when I saw how much work was involved I said fuck that. I gave it to my mechanic. And living in an apartment doesn't make it any easier either.

[@dial2fast]

Yeah, the job is quite involved and you need the space and tools.

[@marcushollier1535]

Hey it's.not that motor it's a,,3.5 V,-6 ,,2005 for a Maxima

[@MrPatdeeee]

I mean no disrespect with the following. But... The 2 "studs" on either side of the plenum SHOULD be left in tact. This prevents the very important gasket from getting out of position; when you are re-installing the plenum. And the reason WHY there are two studs and nuts; instead of being like the 3 other bolts in front of the plenum. Also why the odd shape of the gasket. There is NO need to remove the studs (and one should not remove them) when removing the plenum. Simply remove the nuts; and again this assures the gasket fits correctly when re-installing the plenum. For the gasket could get misaligned if the studs are not there; and how would you know it? One can only imagine what would happen if there were cracks between the plenum and the engine block; even though the bolts and nuts were tightened correctly. Again I mean NO disrespect.