Valve Adjustment

370zFORme!! · 04-20-2010, 06:18 PM

Quote:

Originally Posted by IDZRVIT

So, are you now going to tear down your top end seeing you have an answer? You could have found the answer very easy if you had bothered to read the service manual or google. So keep trying the warranty route because your mechanical knowledge is obviously limited to attempt a DIY. Have a nice day!

Dude you need to pay more attention to detail. I never once said I was gonna attempt a valve adjustment myself. I just wanted to know if it would have a chance at fixing the ticking. Btw I am a mechanical engineering major, so you can stop with the half assed attempts of trying to outwit me. Now..

AND have a nice day!

370zFORme!! · 04-20-2010, 06:25 PM

Quote:

Originally Posted by weeeee

The new VQ37VHR heads are NON SERVICEABLE, meaning you cannot adjust the valves. Typically the FSM recommends changing the oil to Nissan Ester oil for ticking and noise issues, which has been documented on the G37 forums (and on here) to stop the ticking. I hope you're still under warranty, because the only other alternative after this point short of dealing with it is head replacement if your SM deems it is necessary.

See this is what I call useful information. Its also bad news. Thanks weeeee!.

kannibul · 04-20-2010, 06:25 PM

I wouldn't recommend adjusting the valvetrain. Leave it be. Ticking isn't always the valvetrain. Coule be a number of things...

Have you tried removing the serpentine belt? I'd start there...

370zFORme!! · 04-20-2010, 06:30 PM

Quote:

Originally Posted by kannibul

I wouldn't recommend adjusting the valvetrain. Leave it be. Ticking isn't always the valvetrain. Coule be a number of things...

Have you tried removing the serpentine belt? I'd start there...

I haven't, any reason? I've heard something about the timing tensioner also being a culprit. Thoughts?

SE · 04-20-2010, 06:48 PM

At this point, unless you're not under warranty (mandatory warranty period for Nissan is 36 months/60k miles) is to take it in to the service department and make them deal with it. If the issue isn't resolved, you can take the issue up further with regional or national. There's no use in trying to fix it or diagnose the problem yourself.

370zFORme!! · 04-20-2010, 06:57 PM

Quote:

Originally Posted by weeeee

At this point, unless you're not under warranty (mandatory warranty period for Nissan is 36 months/60k miles) is to take it in to the service department and make them deal with it. If the issue isn't resolved, you can take the issue up further with regional or national. There's no use in trying to fix it or diagnose the problem yourself.

Ya I would never attempt to do any major work like this on my car personally. I'll just take it in to the dealer. Just want to be well informed to battle the "oh that's normal" crowd of douchbags in the service department.

370zdub · 04-20-2010, 08:09 PM

^I went to the service department the other day and this douche didn't know what a TSB was. He was also messing around on his phone which really pissed me off. I was not pleased with that visit to the service department. I can't believe that some of the Nissan dealerships hire these people.

IDZRVIT · 04-20-2010, 08:11 PM

Quote:

Originally Posted by 370zFORme!!

Man I'm so anal

Now go take your car to the dealers as others have suggested as well.

Or, are you sure the ticking is valve train related and not confusing it with injector ticking? You could go buy an automotive stethoscope to determine where the tick is originating from. Then go back to the dealer if it is determined that it's the valve train.

SE · 04-20-2010, 08:18 PM

^^ I wouldn't even bother unless the dealership is doing a poor job of diagnosing the issue themselves.

IDZRVIT · 04-20-2010, 08:21 PM

Quote:

Originally Posted by weeeee

The new VQ37VHR heads are NON SERVICEABLE, meaning you cannot adjust the valves.

Wrong. Go read the section EM of the service manual and look for "Camshaft Valve Clearance - Inspection and Adjustment". Sure as heck sounds serviceable to me.

370zFORme!! · 04-20-2010, 08:37 PM

Quote:

Originally Posted by weeeee

^^ I wouldn't even bother unless the dealership is doing a poor job of diagnosing the issue themselves.

That's in fact what's happening here, I have taken it to 3 different dealers, and all have said that it's "normal valve train noise." A field service engineer came out from Nissan to listen to the problem and he actually said something different. "normal injector sound." So I've just assumed since he's an engineer, he knows whats up. Still sucks though, hopefully my FI exhaust will make me notice the exhaust tone over the tapping.

370zFORme!! · 04-20-2010, 08:56 PM

Quote:

Originally Posted by 370zdub

^I went to the service department the other day and this douche didn't know what a TSB was. He was also messing around on his phone which really pissed me off. I was not pleased with that visit to the service department. I can't believe that some of the Nissan dealerships hire these people.

I had some idiot tell me that it sounds like a perfectly normal sound for a 370z engine. I asked him to go bring a new one and listen to them side by side and tell me if it still sounds normal to him. He then says "Oh I cant do that because I've never actually heard a 370z engine before." WTF? So I responded, "How can somebody say that an engine sounds normal if they have never heard the engine before?" I think I blew his mind, because he just stood there looking at me...silent...clueless.

370zdub · 04-20-2010, 09:56 PM

^that last line was full of WIN

Zsteve · 04-20-2010, 11:02 PM

From what I have been told by service managers, this is one of the reasons they recommend their billion dollar oil, its to help quiet the engine which is probably the valves clicking.

kannibul · 04-20-2010, 11:15 PM

Quote:

Originally Posted by 370zFORme!!

I haven't, any reason? I've heard something about the timing tensioner also being a culprit. Thoughts?

Timing tensoners were issues in the VQ35/VQ40 - due to a bad batch of chains that had rough edges.

It would sound about like a supercharger growl...

Belts can squeak and tick, bearings in the alternator, for example, could have a rough edge resulting in a tick...just sayin'

04-20-2010, 08:09 PM	#22 (permalink)
370zdub Track Member Join Date: Jun 2009 Location: UT Posts: 628 Drives: 09 370z 6mt,10 Ford Rep Power: 17	^I went to the service department the other day and this douche didn't know what a TSB was. He was also messing around on his phone which really pissed me off. I was not pleased with that visit to the service department. I can't believe that some of the Nissan dealerships hire these people. __________________ 2010 Ford 6.4L Power Stroke Diesel: 588whp/1082wtrq 2007 Dodge 6.7L Cummins Diesel: 788whp/1405wtrq, runs 12's @ 7400lbs, Still miss my 370z!

04-20-2010, 09:56 PM	#28 (permalink)
370zdub Track Member Join Date: Jun 2009 Location: UT Posts: 628 Drives: 09 370z 6mt,10 Ford Rep Power: 17	^that last line was full of WIN __________________ 2010 Ford 6.4L Power Stroke Diesel: 588whp/1082wtrq 2007 Dodge 6.7L Cummins Diesel: 788whp/1405wtrq, runs 12's @ 7400lbs, Still miss my 370z!

04-20-2010, 11:02 PM	#29 (permalink)
Zsteve A True Z Fanatic Join Date: Sep 2009 Location: TX Posts: 3,298 Drives: the 2 balled club Rep Power: 22	From what I have been told by service managers, this is one of the reasons they recommend their billion dollar oil, its to help quiet the engine which is probably the valves clicking. __________________ 2010 LS3 C6 Silver coupe corvette

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04-20-2010, 06:25 PM	#18 (permalink)
kannibul A True Z Fanatic Join Date: Jun 2009 Location: Jenks, OK Posts: 2,281 Drives: 370z Touring/Sport Rep Power: 267	I wouldn't recommend adjusting the valvetrain. Leave it be. Ticking isn't always the valvetrain. Coule be a number of things... Have you tried removing the serpentine belt? I'd start there...

04-20-2010, 06:48 PM	#20 (permalink)
SE A True Z Fanatic Join Date: Jan 2010 Location: San Jose, CA Posts: 4,236 Drives: 370z/STI/EVO X/IS-F Rep Power: 23	At this point, unless you're not under warranty (mandatory warranty period for Nissan is 36 months/60k miles) is to take it in to the service department and make them deal with it. If the issue isn't resolved, you can take the issue up further with regional or national. There's no use in trying to fix it or diagnose the problem yourself.

04-20-2010, 08:18 PM	#24 (permalink)
SE A True Z Fanatic Join Date: Jan 2010 Location: San Jose, CA Posts: 4,236 Drives: 370z/STI/EVO X/IS-F Rep Power: 23	^^ I wouldn't even bother unless the dealership is doing a poor job of diagnosing the issue themselves.