Engine, Drivetrain & Forced-Induction Have Technical Questions or Done Modifications to the G35? Find out the answer in here! (View All Posts)

Valve cover gasket replacement

Thread Tools
 
Search this Thread
 
Rate Thread
 
  #1  
Old 03-27-2020 | 03:27 PM
Headnsouth's Avatar
Thread Starter
|
Registered User
Joined: May 2016
Posts: 32
Likes: 2
Valve cover gasket replacement

Hey gang I'm in the middle of replacing my VC gaskets and this is what it looks like. Intakes have build up and orange staining on the valve train. Any ideas what this and should I be concerned? What causes this?
155K miles mobil1 since 16K miles. Runs fine
Thx



 
  #2  
Old 03-27-2020 | 03:42 PM
cleric670's Avatar
BANNED!!!
Joined: May 2017
Posts: 14,817
Likes: 2,473
From: Washington State
Coupe 6MT Premium RAS
Premier Member
It's oil vapor ingested back into the intake plenum through the PCV system. You can use brake cleaner on a rag and wipe everything down to clean it up or leave it. Or unplug the PCV hose when it's back up and running and suck Sea Foam through the plenum PCV hose to wash it through the combustion chamber.

That looks like a NORMAL accumulation of oil considering the mileage. Installing a quality catch-can will help limit the amount of oil ingested but that is literally what the PCV system is designed to do, suck crankcase vapor back, into the intake so it gets burned up in the combustion chamber.
 
  #3  
Old 03-27-2020 | 03:46 PM
cleric670's Avatar
BANNED!!!
Joined: May 2017
Posts: 14,817
Likes: 2,473
From: Washington State
Coupe 6MT Premium RAS
Premier Member
As for the head picture everything looks normal there as well but you look like you're due for an oil change, looks fairly dark where it's pooled on the bolt heads.
 
  #4  
Old 03-27-2020 | 04:13 PM
Headnsouth's Avatar
Thread Starter
|
Registered User
Joined: May 2016
Posts: 32
Likes: 2
Cool, I wanted to check before I buttoned everything back up. Yep it's due for an oil change. Thanks for the replies. U guy's rock.
I'll wipe it down while I'm in there.
 
  #5  
Old 03-31-2020 | 01:01 PM
Headnsouth's Avatar
Thread Starter
|
Registered User
Joined: May 2016
Posts: 32
Likes: 2
Thanks for the info. All buttoned up with new gaskets, PCV valve and fresh oil and filter. Replaced the original PCV.
 
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
g35indafuture
G35 Sedan V35 2003-06
3
11-12-2012 02:48 PM
supG35x
G35 Sedan V35 2003-06
6
03-16-2012 11:57 AM
rapidrob
Engine, Drivetrain & Forced-Induction
11
10-01-2009 09:40 PM
CatsTasteGood
G35 Sedan V35 2003-06
15
02-22-2009 07:35 PM



You have already rated this thread Rating: Thread Rating: 0 votes,  average.

Quick Reply: Valve cover gasket replacement



All times are GMT -4. The time now is 06:09 AM.