Replacing my valve cover due to PCV; what else?

orteeze · 11-02-2016, 12:26 PM

So, I bit the bullet and ordered my new valve cover because of the squeal noise coming from the main seal. Funny how it goes away when I remove JB4.. hmm.. Anyways, I plan on sticking with JB4 in the mean time while all of the MHD maps are ironed out.

I bought replacement spark plugs while I'm there. Car has 73K, anything else I need to address while I'm there?

Wolf 335 · 11-02-2016, 01:17 PM

Replacing your valve cover due to PCV, why?

You can replace the valve on its own.

orteeze · 11-02-2016, 02:04 PM

Quote:

Originally Posted by Wolf 335

Replacing your valve cover due to PCV, why?

You can replace the valve on its own.

Technically you can. On a N55 valve cover the PCV is non serviceable. Some people sell just the diaphragm but requires cutting the original cap and using some type of adhesive to glue the cap back on.

I'd rather not..

Peen · 11-02-2016, 02:54 PM

I just had to do this. Not sure why it would go away with JB4 though. Maybe coincidence? I did main seal first, squeal came back.

Then I did valve cover. Hasn't come back.

Wolf 335 · 11-02-2016, 03:27 PM

Quote:

Originally Posted by orteeze

Technically you can. On a N55 valve cover the PCV is non serviceable. Some people sell just the diaphragm but requires cutting the original cap and using some type of adhesive to glue the cap back on.

I'd rather not..

Was not aware of that, thank you.

I assumed it would be the same as N54. I changed mine with updated PCV valve.

playground · 11-02-2016, 03:29 PM

Do you have a DIY for this?

Peen · 11-02-2016, 03:53 PM

Quote:

Originally Posted by playground

Do you have a DIY for this?

http://www.e90post.com/forums/showthread.php?t=1197666

http://www.e90post.com/forums/showthread.php?p=18946466

playground · 11-02-2016, 04:06 PM

Did you DIY it yourself? Did you need to buy the special injector removal tool?

Peen · 11-02-2016, 04:25 PM

I did not. Shop replaced main seal thinking it was that, even when I told them it wasn't the root cause. They replaced valve cover for just cost of parts.

orteeze · 11-02-2016, 05:53 PM

Why do you have to remove the injectors??

weehe126 · 11-02-2016, 08:46 PM

Quote:

Originally Posted by orteeze

Why do you have to remove the injectors??

You don't, not sure why he is asking about them.

cahme · 11-04-2016, 07:10 PM

If you have oil in your spark plug wells, it may not be from a leaking VC gasket, but from the spark plug insert to head gasket. To replace those, the injectors need to be removed.

I found mine quite leaky even though my VC gasket was fine.

11-02-2016, 12:26 PM	#1
orteeze Major 223 Rep 1,073 Posts Drives: 2018 YMB F80 Join Date: Sep 2014 Location: Alabama iTrader: (14)	Replacing my valve cover due to PCV; what else? So, I bit the bullet and ordered my new valve cover because of the squeal noise coming from the main seal. Funny how it goes away when I remove JB4.. hmm.. Anyways, I plan on sticking with JB4 in the mean time while all of the MHD maps are ironed out. I bought replacement spark plugs while I'm there. Car has 73K, anything else I need to address while I'm there? __________________ 2008 MB 335i-SOLD 2011 AW 335i M Sport- SOLD 2011 BSP 335i-SOLD 2011 BSP 335is- FOR SALE 2018 YMB M3- Current
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11-02-2016, 01:17 PM	#2
Wolf 335 Brigadier General 2341 Rep 3,539 Posts Drives: 2007 E92 335i Join Date: Aug 2012 Location: GTA - Greater Toronto Area iTrader: (0)	Replacing your valve cover due to PCV, why? You can replace the valve on its own.
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11-02-2016, 02:54 PM	#4
Peen Private First Class 41 Rep 156 Posts Drives: 2011 BMW 335i Sedan Join Date: Dec 2015 Location: San Diego, CA iTrader: (0)	I just had to do this. Not sure why it would go away with JB4 though. Maybe coincidence? I did main seal first, squeal came back. Then I did valve cover. Hasn't come back. __________________ 2011 335i / MHD E85 BEF / JB4 ISO / xHP Stage 3 TCU / VRSF Catless DP / Phoenix CP / YCW Coilovers's 6K-18K / M3 Control Arms / Enkei Raijin 18' Wheels / Michellin PSS
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11-02-2016, 03:29 PM	#6
playground Lieutenant 32 Rep 473 Posts Drives: M3 Join Date: Jan 2013 Location: North York iTrader: (0)	Do you have a DIY for this? __________________ Become like water my friend.
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11-02-2016, 04:06 PM	#8
playground Lieutenant 32 Rep 473 Posts Drives: M3 Join Date: Jan 2013 Location: North York iTrader: (0)	Did you DIY it yourself? Did you need to buy the special injector removal tool? __________________ Become like water my friend.
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11-02-2016, 04:25 PM	#9
Peen Private First Class 41 Rep 156 Posts Drives: 2011 BMW 335i Sedan Join Date: Dec 2015 Location: San Diego, CA iTrader: (0)	I did not. Shop replaced main seal thinking it was that, even when I told them it wasn't the root cause. They replaced valve cover for just cost of parts. __________________ 2011 335i / MHD E85 BEF / JB4 ISO / xHP Stage 3 TCU / VRSF Catless DP / Phoenix CP / YCW Coilovers's 6K-18K / M3 Control Arms / Enkei Raijin 18' Wheels / Michellin PSS
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11-02-2016, 05:53 PM	#10
orteeze Major 223 Rep 1,073 Posts Drives: 2018 YMB F80 Join Date: Sep 2014 Location: Alabama iTrader: (14)	Why do you have to remove the injectors??
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11-04-2016, 07:10 PM	#12
cahme Second Lieutenant 116 Rep 226 Posts Drives: '11 E90 335i Sport MT Join Date: Jul 2015 Location: Texas iTrader: (0)	If you have oil in your spark plug wells, it may not be from a leaking VC gasket, but from the spark plug insert to head gasket. To replace those, the injectors need to be removed. I found mine quite leaky even though my VC gasket was fine.
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