G35 / VQ35DE- HOW TO replace valve cover gasket 

Man I wish I had friends like this... they always come asking me for help but when I need help on my car they're nowhere to be seen

“What you do is grab a beer then man up and get that shhhh done “😂😂😂

Don't underestimate the need for a quality low torque range torque wrench here. I tried to do it with my big torque wrench and snapped a bold off. Took me 2 hours to get it out... Great video guys!

Man this video saved me so much time and money!! Thank you guys! Great work!

Thank you guys. I was able to follow your directions to replace the valve cover amd gasket. I also changed a couple coils and all spark plugs while i was at it. It took me about 10 hours going very slowly and carefully. Expect to buy replacement generic hoses. Mine were extra toasty.

Great video. I am doing the exact same project right now and this video is a huge asset. Thanks for making posting it.

Everytime I work on my 350z I wish I could just rip the wiring harness out and throw it in the trash cuz it's always in the way😂 Thx u guys 4 making these videos! It really helps guys like me out👍👏

that was super informative. Thanks for taking the time. and sharing great ideas.

Thanks very much…. Just finished this replacement exercise. While I had everything off, took off all the plenums down to the valve chambers. Replaced the knock sensor and the harness (wow!!! What a place to put it) since I was getting P0327. Never got P0328 but since I had every open.. This video was very helpful. I will add that using a flex socket for the left bank left corner by the firewall was REQUIRED. Thanks again….

Got my first G a while now and imma attempt this to see how bad is the oil consumption rn and there is a leak in the upper plenum. Thank you for the video! Helped me find the right rtv!

Wanted to say thank you for this video. I just completed the job today on our 2003 G35 Sedan and this really helped. Knowing what to expect before you start is invaluable - thank you. Only 1 bolt needed a wobbly - passenger side left corner. I used snack ziplock baggies to organize my bolts as I took them off. The entire job was 10mm only. (8mm for clamps or use a flat screw driver.) I did not have to clamp the throttle body hoses when I removed them (as someone asked below) - you lose about 2 oz's of coolant - no big deal. I did not use the blue tape trick for the valve cover gaskets. I siliconed them in place the night before. I did have a very small leak at the variable valve solenoid on the passenger side when it was all said and done. A trip to Infinity for a new gasket (5.00) fixed that problem. All is well - looking clean. Thanks again! If anyone else is doing this - I recommend replacing the cam position sensor on the drivers side if you have more than 150K miles on the original. We have 223K miles and have already replaced the passenger side. Since it was so exposed and easy to get to, I replaced the drivers side as well (65.00). (New set of plugs of course! NGK Iridium's.) New PCV valve. Forgot to mention - I bought a 20.00 torque wrench from Harbor Freight - it worked great for this job. Parts: Valve Cover Gaskets, Intake manifold gasket set, 6 plugs, PCV valve, Throttle Body cleaner, Grey RTV - 110.00 Purchased most through RockAuto.com (Felpro) Extra part - Cam Position Sensor - Drivers side 65.00 local - About 35.00 at rockauto.com) Not an expensive job - just a bit time consuming.

A thousand likes 👍. This was one really informative vid. Thank you both!

thank you for taking the time to make and post the video

Awesome job! I'm starting on a G35 tomorrow. Looks like fun.

start the car at the end of the video, brings your viewer satisfaction

Awesome video guys! Thanks a lot. I'm currently doing my valve cover gaskets on my 03 350z (looks just alike). I've got misfiring issues so I'm also doing the spark plug well seals as well because there was some oil in the wells. I've got it all taken apart right now and waiting on parts to come in. Doing the plenum gasket and pcv valve while I'm at it too. Hopefully I can get my Bae running againsoon. Fingers crossed. Thanks again.

I'm a little late here but thanks heaps for the video! was quite overwhelmed by the thought of doing my valve covers but thanks to this vid i got it done myself with ease!

Thanks for the video knocked out my g35 today 💪🏾

Just wanted to pop in and say thanks for this video. My 04 g35 had 4 plugs covered in oil and misfires, so went ahead and swapped both covers. This helped a bunch. That passenger side cover was no joke heh. Turns out 2 coils were also bad, swapped those out and now she's back to her old self. Took about 6 hours including dry time, lunch and a 30min power nap lol. Was quoted $1700 to fix. Thanks again!

Thank for the video it help a lot I show my support!!!

Watching this video helped me fix my oil leak great vid

Great video guys, i got a 2006 350z and im getting ready to do the exact same thing, valve cover gaskets

You guys are cool. How Nice to have a brother, especialy when he knows mechanic 👍

very helpful video, first time doing this all by myself, well i did get help by my worker cause it started to get super late and we ended up staying till 8 PM since its winter it got dark at 4 smh had to install everything back under a small flashlight, my passenger valve cover started leaking like a water faucet when i turned my car on, i did skip watching the rest of the video only cause the wifi was bad in my area, tomorrow i have to do this all over again, here i am at my house now being able to watch the full video, i will def be doing the gasket tape method and the hour wait for the rtv, had to leave my car at the shop, hopefully tomorrow goes well ahah.

Video has been very helpful 💪🏼✨🙌🏼 thank you 🙏 Guys

Anyone notice how undercooked that pizza was on the bottom lol

i've done mine without watching this video first. i sort of have a strong knowledge of what i was doing the entire time. What bothered me, was that Nissan made the Spark plug seals not serviceable, so if you're finding an oily spark plug in any of the cylinders, you have to replace the entire cover gasket. which i had to order and waited for. beside that i've also changed the upper intake gaskets because i refuse to have to open the top of that engine again. Everything is fine now, And Steven R Thank you for taking the time to make this video. Cheers Mate !!!

Planning on doing this to my 370 pretty soon, great video and great tips. Now I have a better idea as to what I'm doing haha

Great video! Very usable information. Thank you

To save time on organizing your bolts, just get a box with a lid and poke holes in the lid, and label them 1-18 and stick the corresponding bolt in the hole to hold them til you reassemble. Just saves time taping, searching for and untaping each one. Plus you don’t waste blue tape which isn’t cheap.

Great video, dudes!

What a freqkn great video guys. Thumbs up to you guys. 🤙👍👍👍

i like this, i have my vq25 and i suspect the valve seals are worn-out since some of the plugs are having some oil when i check them,,,,and this video does exactly what i need to do,,,good job guys

My thought exactly! The sirens started to stress me out when you were removing the valve cover HAHA

I like your video man thanks !!!!!

Good job guys 🙌🏼

Absolutely great video

Starting mines right now but on a 08 g35x. Hope it goes smooth

I've already done my valve covers, intake gaskets and I went ahead and did a wire tuck too. No splicing or cutting needed, just de look and re loom behind intake and all wires hidden.

Nice vid, man. I will be doing valve cover gaskets and spark plugs tomorrow night. Fun stuff!

Nice job you guys

Sweet tool set beautiful for cars

excellent work

Video helped alot with my fuga 350gt/infinity m35, have any idea where I can get hoses like those because half of mines are dry rot and are falling apart.

Nice job bro 👍👍

nice job guys

thanks partner! wish you showed how to make room for that passenger side valve cover + gasket installation though, that was a doozy to get to!

Love the video! Great job super informative, only problem is, mine is the head gasket so I have to go one step deeper, you know any other good video showing the rest of the steps, Or a full maintenance procedure card for the process? Thanks! Cheers to being a fellow Coastie, I'm guessing you're an MK too just like myself ?

Thanks for this video man! Nicely done. Where did you get the gaskets ?

Great video! How do you detach wiring harness attachment from valve gasket (green, very back ) on driver side? I try pushing down and pulling but it doesn’t work. Thanks you!

How has this held up? Is it leaking anywhere? Just wondering if there was anything in hindsight that yo would have done differently because I'm about to attempt this myself on my '05 G35. Any advice would be greatly appreciated. Thanks in advance. Great job on the vid.

The painted upper looks good

Doing today thanks for the video

Getting ready to tackle this on my fx35. I'll make sure to post a video.

Steve, this video is great. I'm getting ready to do this job in my FX35. Passenger cover is leaking but spark plug wells are clean on both sides. Is your car doing well as of today? Would you do anything different? I'm thinking about replacing both covers since I'm at 135k miles. Thanks man.

Old school tuners trick :- use aviation gasket cement instead of rtv. That will hold your gasket instantly and give you a better seal

I just replaced the valve covers on my g and its leaking again around the tube seals. Do you think I can add rtv inside the boarder of the tube seals while the cover is on?

Excellent write up! Did you use new gaskets for the upper and lower plunem? In addition to gaskets, did you use rtv on valve covers and plunums? You mentioned you can do this job without totally removing the plenum- is that true? Lastly, isn't there a coolant line that you need to drain or can you just clip that off? Thanks again and stay safe!!

I see you've got a plenum spacer.are they worth it? Any thoughts about throttlebody spacers? Im in the process or replacing my valve covers and think i will add silicone to the spark plug boot seals as well. Might get those spacers in while i have engine taken apart.

Am bout to do one right now.not putting etc though.thanks guys

How did everything hold up and do since the 3 years you put this on? Im changing my valve cover gasket within the next week since its blowing air and oil out from the seal. Need to order parts now before finding out im missing something i should have ordered before hand. Any issue with the fle-pro gasket? What other seals or things would you cleaned out and change while you have the covers off? Ive also heard about needing bolt grommets and replacing the spark plug seals should be done. Ive checked the spark plugs and coil packs 3 month/ 3k miles ago and looked good. I have an 06 m35 with 27k miles on it. Just kinda has been sitting before i bought it. Minor annoyances cstching up with basic maintenence from things aging.

Do you guys recommend changing spark plugs while we ad it? 🤔 and would NRG platinum spark plugs bee cool

Is there also a gasket for the plenum? I have a 06 sedan and it’s time for me to change it but I don’t have any torque specs or special procedures to follow. I did the one on my 05 Jetta GLI TURBO but that was way more simple.

Hey Steve, great work!! How many miles did your engine have when doing this job ?

I am about to change my valve cover gasket but before I do that I have a question. How many gaskets are there between the plenum to the valve cover. And also I changed my spark plugs not to long ago and the head came off off of the bolt in crank case I believe that's the name. How can I get that bolt out using regular tools?

thanks guys, my question is what kind of cleaner where using to clean the head or can I use any kind of cleaner?thaks

I change my valve cover gasket, and still leaking i don't know what i did wrong, by the way do you know the torque for all the upper and the inside screws??

Dance Gavin Dance in the background tho!😍😍

Hey man when I cleaned my solenoids I was able to bolt both off but only was able to slide one of them out of the metal thing. Were your solenoids easy to slide out?

Do you have to drain the coolant because when taking off the coolant lines wouldn’t coolant gush out or no new to the VQ??

How many miles on this engine? It looks clean! I'm working on a 294k VQ original motor rev up. Has carbon build up like a mofo in the lower intake runners and plenum has never been cleaned brown inside🤦 the valve covers have leaked oil for so long that the entire underside in front of the catalytic converters is covered in oil. Original spark plugs, the gap is almost double what it should be 😑 It still ran and drove. Desperately needs some TLC. Cylinder 6 tube seal is leaking too.

your best video. but the hardest part is putting shit back together, I'd watch that completely.

Did you have to drain your coolant or how did you remove the coolant hoses?

Bit late to your video's, as we now have two Stageas with these engines.....but what would cause the oil to leak into cylinder 6 spark plug ? I have the same issue on 4 and 5 Cheers

..im looking at a 05 g35 with the vq35, the engine runs but its not 100% ,i feel the ecm is bad could be an easy fix or a total bust. After reasearch I've found the ecm to be cheap but also found that these engines consume a lot of oil, is the oil consumption that bad ? Any advice and help fixing the car would be gladly appreciated!

I have oil in my spark plugs. Just got a G35 and noticed she’s running rough. I have one of those computer things for my car it it can back with multiple cylinder misfires. I recently got two used valves covers to replace the ones on my car. Is it bad for oil to be in my spark plugs?

yea I was just quoted $700 for new gaskets and $1800 for gaskets and covers.. I think ill be doing this one myself! thanks for the vid it will definitely help!

how do you get the oassenger side far corner bolt in on the valve cover? Its hard to reach!

What's that alarm going off when spraying brake cleaner?

How did you get the valve cover remove on the left side where the wire harness makes it difficult? Im having the same issue with taking off the valve cover

That catch can is putting in some work lol my plenum was brown with burnt oil

My g35 has recently started to release some light white smoke, at idle and a fair amount when accelerating, not over heating and no milky oil, could this be a failed head gasket ?????? Pleas help

What did you guys clean the solenoid with, mass cleaner? I couldn’t hear what you had said

When you put the gasket you need to add some silcome on the top corners to help the gasket sit and make a better seal

sorry im new to this. Do you have to take out all 6 coil packs?

did you guys get new gaskets for the manifold and plenums??

Damn boi got the HR

What kind of loctite or threadlocks good to place on the plenum?

Was it leaking oil man and absolutely great job on it

What did you use to torque the valve cover down ? I can’t find a wrench that goes that low

How to get wire harness back together after I cut in half?

Where did you get your braided lines for the catch can

When should you change the valve covers on the g35. I know that if you have oil in your spark plugs you need to change it. What if you don't have any leaks? What other symptoms suggest it can be the valve covers? Btw awesome video. Getting my own G35 soon and I'm glad that you have been posting a lot about the G.

Dude that pizza break 😂 looked so good

26:40- you can use a wad of modeling clay or Blue Poster-Tac as well.

Good job Guys! Can you do a video on replacing upper oil pan.

HEY bud ....very nice video it saved me a 1000 bucks from dealer.....all the dam bolts where a pain in the azz but i felt good knowing i did it myself with jus a little of my own time an tools...... what paint did u use for upper manifold? also what did u clean the lower intake with? i still have mines apart sitting in garage......im now replacing spark plugs an cam shaft sensor since i can get to them so easy now

How did u get the back left passenger one by the harness out ?

What was the code you had that made you change the solenoid?

So how were you able to remove those two difficult bolts on the left ?