Thank you! It is a very useful video, I was very frustrated trying to find leak. You have saved me tones of pain, I was getting the lean codes and started replacing the air duct parts. Mine cover had all the sleeves, but seems like it was overtightened long time ago so it punctured the intake. So I took a piece of wire and slid into the hole. Oh gash, the wire went 2 times length of the bolt.

@MotorvateDIY

3 жыл бұрын

Hey Eugene U, It can happen very easily and I'm glad you figured it out!

Good info on this upload, ill keep this in mind next time i put the oem cover back on

@MotorvateDIY

6 жыл бұрын

Hey Mumble, Thanks for the comment and that sounds like a good plan. :)

Nice tip, I had NO IDEA that this could be a source of a vacuum leak. Really good info. Those little sleeve/collars fall off the cover and I’m sure I am missing at least one. I may just epoxy it back in place on the cover itself so it never falls off.

@MotorvateDIY

6 жыл бұрын

Hey Stephen DiSchino, Epoxy is a good idea... I simply keep the engine cover in my den.

@se5145

4 жыл бұрын

I dropped my sleeve somewhere in the engine bay last week. Sigh

@MotorvateDIY

4 жыл бұрын

​@@se5145 I've done that as well and I was not able to find it. I picked up a few extra ones from the scrap yard. Any 07-08 G35 or any G37 uses them.

@se5145

4 жыл бұрын

Good idea, I'll check the scrap yard. Awesome channel! Awesome content! Keep em coming

I'll have to check my intake now, thanks

@MotorvateDIY

6 жыл бұрын

Hey alex boucher, You are welcome :)

That's exactly what happened to mine, funny thing is that all the sleeves are there. I'm thinking this happened before I purchased the vehicle (used). Thanks for the tip.

@MotorvateDIY

4 жыл бұрын

Hey Memo's Garage, You're welcome :)

Awesome video. I drilled out the black perforated holes behind the badge to help vent heat from the manifold. You don't think this could cause it to melt do you?

@MotorvateDIY

5 жыл бұрын

Hey Doug Arnold, Nope not at all. You can also just remove the cover. Mine has been in my office since 2016. :)

Excuse me while I frantically run out to my car to check if it has these..

@MotorvateDIY

6 жыл бұрын

Hey Yol, Not a bad idea. :) Better safe than having an intake leak !

Have a black 2010 G37 Sedan and have loved your videos since your exhaust install. Thinking of spending the money myself seeming that it is the best upgrade you can choose. Did you ever tune or get the Gen3 intake? I feel that is probably your next video series =).... would love it!!!! BTW you do a great job at making videos.

@MotorvateDIY

6 жыл бұрын

Hey Justin Locker, I don't have a tune or Gen3 intake just yet. With the low Canadian dollar (1$ US = $1.31 Canadian) I will have to wait a while :( Thanks for your comment on the quality of the videos, I appreciate it!

any tips on removing the grommet and replacing it? while i was trying to force back in the metal retainer you talk about in this video, it absolutely refused to go in no matter how hard i tried to force it. (top left bolt). the bolt itself had white at end of it... i eventually realized the grommet had been manipulated and wont fit the metal retainer anymore, since the other retainers would go in and out of their grommets with ease. im ordering a new grommet now and im wondering how to even approach removing the busted one..? also, during this my hood struts decided to fail and the hood fell down onto my car, so i put the cover back on and have left it since. car is fine but im trying to fix this to OEM specs asap.

@MotorvateDIY

5 жыл бұрын

Hey Usman Tahir, The engine cover's rubber grommet is a firm rubber. When the metal sleeve didn't go in, I wonder if the rubber grommet has got out of position and folder over? Have a close look at it and the metal sleeve, I suspect something is bent or out out position. To remove the grommet use a small screw driver, and push the outer edge to the center, reposition to the other side and you should be able to get it out with out much trouble. To put in the new one, do your best to pinch the rubber grommet (and try to fold it) insert one edge, and use the small screw driver to push it into position and it should lay flat. Good luck!

So I found out this was where my leak was coming from, I kept getting a light missfire. Hopefully this fixes it!

@MotorvateDIY

4 жыл бұрын

Hey speedycory1, I hope so too... good luck!

Great video! Awhile ago I was trying to loosen the bolt to take the cover off my g37. But I was an tired and an idiot and ended up tightening the bolt and it broke off. What is the bolt and screw part number? And it was the bottom bolts for the cover.

@MotorvateDIY

6 жыл бұрын

Hey Daniel P, After about 30 minutes trying to find your part number, none of the sites showed the bolt/stud on the parts diagram. It may not be available as a separate part. You could see if the broken bolt could be pushed out and then find a replacement at the hardware store.... or just leave it as is. It won't hurt anything.

I took mine off to vent any trapped air considering since our throttle body flaps are always open cuz of VVEL our intake tubes and intake manifold are always completely full of air as if we were flooring it and it probably doesn't make a big difference since the air gets used quickly but whateva.

@MotorvateDIY

6 жыл бұрын

Hey sk8punk318, I did the same thing. My engine cover is in the house. Just a clarification on the VVEL system. The throttle body not always opened as Nissan/Infiniti told us. The throttle almost closes anytime we lift off the throttle. This is to ensure there is enough vacuum for the brake booster which gives us power brakes :) If you want to see for your self use a cheap OBD scanner and monitor the MAP PID (intake Manifold Air Pressure) . See my other channel for how to connect: kzread.info

I HAVE THAT ISSUE BUT MY CAR THROWS A CEL EVEN WITH THE BOLT ON . CAN I COVER THE HOLE WITH SOMETHING OR WOULD I HAVE TO BUY A NEW MANIFOLD ?

@MotorvateDIY

Жыл бұрын

There are many reasons for the check engine light to be on. If the intake bolt hole is punched through and you have a screw in it, I suspect the engine has different problem. What is the code?

How do I know if the bolt went in to far and punctured the brass insert? My sleeve has fallen off and I think I may have went to far urgh 😢

@MotorvateDIY

10 ай бұрын

Start that car and place your finger over the centre screw hole... do you feel any suction or her a change in sound? If you do, at some time, the screw did puncture the intake.

I'm having problems with my rpd dropping and rising when I'm not on the throttle. Do you think the screw is enough of an air leak to cause that problem?

@nathantymchuk591

3 жыл бұрын

Rpm*

@MotorvateDIY

3 жыл бұрын

With the screw in, I don't... I think you might want to clean your throttle bodies (don't clean them if your car is a 2007 G35 or 350z!!) and do the 3 steps to get a proper idle: Throttle body clean: kzread.info/dash/bejne/q4d_m5uPkrbPhKg.html After throttle body clean: kzread.info/dash/bejne/en2dw6hphsS6nLQ.html Good luck!

So if a little smoke came out of the hole during smoke test , your solution should solve it?

@MotorvateDIY

6 ай бұрын

Yes... just screw in the bolt and gently tighten it (finger tight + 1/8 turn). Easy fix! If you want, you can also use a thread sealer just to be sure it is fully sealed.

Hey, I want to remove the cover and run without it. So does that mean that I have to have the Center bolt on?

@MotorvateDIY

2 жыл бұрын

Yes, you can remove the engine cover. I removed my engine cover about 4 years ago. For the centre bolt, if someone in the past has used a bolt too long, or lost the metal spacer and tightened it, the bolt can push into the intake manifold and puncture it. With the cover removed, start the engine and use your finger to check if the bolt hole has air/vacuum passing through it (place your finger over the hole and if a different sound or a vacuum is felt, the intake has a hole). If it does, just put the bolt back without the cover and all is good. If it doesn't all is good :)

So is this the part number for the bolt or for the circle washer thing ? I’m rocking no engine cover but I noticed I don’t have the piece there

@MotorvateDIY

2 жыл бұрын

With the engine idling, place your finger over the centre hole. If the sound doesn't change and you don't feel suction, you don't need a screw there. If you need one or want one anyways, I think it is an M6 bolt, with a 10mm head. Make sure it isn't too long, or it will punch through into the intake manifold.

@drake639able

2 жыл бұрын

@@MotorvateDIY forgot to ask so is it okay if I put in the center bolt back without the engine cover on ?

@MotorvateDIY

2 жыл бұрын

Again: With the engine idling, place your finger over the centre hole. If the sound doesn't change and you don't feel suction, you don't need a screw there. From the factory, the screw hole doesn't go into the intake. When the metal spacer is lost or a long bolt is used, it punctures the intake manifold. Then you need a screw there to prevent a vacuum leak and engine drive ability problems.

Do u know where I can find videos on replacing the valve cover gasket on that exact same car you showing

@MotorvateDIY

4 жыл бұрын

Hey NjBoRi 973, Sorry, but I don't. Changing the valve covers is not difficult, but a lot of parts need to be removed, like the upper intake, intake boots, PCV hoses and ignition coils. You might want to do an online search for a factory shop manual (they are easy to find) Look for section "EM" (engine mechanical) for the VQ37VHR, it is under "Rocker Cover" Good luck!

@LosDaGhost973

4 жыл бұрын

@@MotorvateDIY thanks..

@MotorvateDIY

4 жыл бұрын

Anytime :)

@LosDaGhost973

4 жыл бұрын

@@MotorvateDIY in my case it would be a vq35hr.. I gotta tell u..this car been hell ever since I got it few months ago..seems parts get confused for 2006 or less.. already ordered new coils and plugs and had to send back.even though it clearly states it's for a 2007 G35.. but since I have the 07 g35x I'm having hard time finding videos and parts

@MotorvateDIY

4 жыл бұрын

Hey NjBoRi 973, I understand... Since the HR was only made for 2007 and 2008, it is not very common and it the part suppliers assume it is the same as a 2006, since many of the parts are - just not the engine. Good luck getting it running in top condition! Quick TIP: If yours is a 2007 DON"T CLEAN THE THROTTLE BODIES. The procedure (idle air volume learning) used to set the idle won't run to completion and the idle may be high or unstable. The only fix I know of is to update the ECU at the dealer or Eugene at www.yelp.ca/biz/enthusiast-auto-care-concord

If anyone still watching this, what is the name of that thing attached behind the right side valve cover?

@MotorvateDIY

10 ай бұрын

That is the motor for the VVEL system.

Interesting I have a video request. Can you make one on how to get tighten/adjust the handbrake?

@MotorvateDIY

5 жыл бұрын

Hey Mike Doria, That's a GREAT idea! I will add it to the production schedule for the spring. Thanks for the idea :)

@menemismix

5 жыл бұрын

Motorvate DIY sweet! Looking forward to it

Never knew this. Have the same issue with the center screw .

@MotorvateDIY

4 жыл бұрын

Hey Kevin L, It can happen so easy.... if that metal collar falls off and you snug up the centre bolt, it will poke through into the intake. Luckily it is an easy fix: leave the screw in, or epoxy fill the hole. :)

I didn't know this.. I drive without the cover on..someone told me the cover keeps the heat of the engine.so it will heat up easier so I removed it and the bolts.

@MotorvateDIY

4 жыл бұрын

Hey NjBoRi 973, The main purpose of the engine cover is make it look nice under the hood and to reduce mechanical engine sounds. I also agree that they hold in a little engine heat and removed mine about 3 years ago. :)

I swear if this is what’s causing my maf to throw a code imma be upset, I have brand new oem maf sensors with stock intakes and I keep getting a mAf code

@MotorvateDIY

Жыл бұрын

Good thing it is an easy thing to check and fix. Goo luck!

so you don’t use the engine cover and just leave a screw in the hole?

@MotorvateDIY

10 ай бұрын

Since my centre screw hasn't punctured the intake, I don't need to leave it in with the cover off. And yes, my cover has been off since mid 2016 and I store it in my house.

This caused me so many problems because I could not find out where the leak was coming from

@MotorvateDIY

6 жыл бұрын

Hey Matteo Garcia, I understand your frustration... it is easy for the top hat /insert to fall out and cause some issues. Did you get your intake leak resolved?

I just put the cover on without screwing it in. Once the hood is shut it's not going anywhere anyway.

@MotorvateDIY

3 жыл бұрын

Yup, that will work too :)

Can you just remove the cover all together

@MotorvateDIY

Жыл бұрын

Yes! The only time my engine cover is on is when I do an under hood clean. This prevents water from collecting in the inside "V" of the engine, which is where the two knock sensors are. After the under hood clean. I take the cover off and put it back in my house.

@djsthemetereman

Жыл бұрын

@@MotorvateDIY Perfect I wanted mine off for a little more engine noise

What a junk design using plastic intake manifolds instead of good old metal ones. Even Honda is using plastic intake manifolds on their V6's now. I'm glad mine is still metal.

@MotorvateDIY

6 жыл бұрын

Hey DarkSyne, Plastic intake manifolds are not all bad. They are lighter, more flexible in design and don't hold the engine heat as much. Just about every car made in the last 5 years has a plastic manifold for those reasons. What happened here is just "one of those" things that can surprise us... Hopefully this video will have people do a quick check to make sure nothing is missing.