Valve Cover Leaking Oil

[dazza]

I used a mirror to check the gasket where the leak is. It seems to be sitting nicely.

Could a faulty PCV cause a leak??

[dazza]

Going to get a new PCV on monday. Although i seem to have the correct boost and a rough idle when i pull out the dipstick.

If this doesn't work maybe a new valve cover??

@vRSAlex any thoughts on this??

[dazza]

Just replaced the PCV the old one does not seem to be faulty.

The new one is version R do i need to replace the rear breather tube?

[dazza]

By the looks of it i wasted my money on the PCV. Gasket is still leaking.

Before splashing out on a new valve cover going to try and replace the rear breather. As this vents pressure from the crank case??

[olethalb]

the rear breather is for both crank and cam cover ventilation 'off idle'

intake pipe via pcv is breather for both 'on idle'

there is no pressure in the rear pipe whatso ever unless (sure you mentioned having the earlier pipe) you hae the check valve pipe and it's faulty - in which case remove the check valve 

[dazza]

the rear breather is for both crank and cam cover ventilation 'off idle'

intake pipe via pcv is breather for both 'on idle'

there is no pressure in the rear pipe whatso ever unless (sure you mentioned having the earlier pipe) you hae the check valve pipe and it's faulty - in which case remove the check valve 

So the earlier pipe will not have a check valve? The PCV i replaced was version L.
So rather than buy a new pipe i should remove the check valve in the rear breather if it has one?
Would this account for the leak?

[olethalb]

only way it would leak is if the rear pipe check valve failed and it's creating pressure off idle, i'd expect exhaust gas to smell a little oilier than usual too.

it's worth a check but sounds more gasket / mating surface related. was it an OEM gasket? and you fitted bolts through gasket before cover installation?

[olethalb]

[dazza]

only way it would leak is if the rear pipe check valve failed and it's creating pressure off idle, i'd expect exhaust gas to smell a little oilier than usual too.

it's worth a check but sounds more gasket / mating surface related. was it an OEM gasket? and you fitted bolts through gasket before cover installation?

Yes it was an OEM gasket.
I did not fit the bolts through the gasket before cover installation. I did the first time and it failed.

[olethalb]

9 times out of 10 you can bolt the bolts in after but you risk nicking the gasket, the bolts are designed so the gasket holds them in place when removed, i always push the bolts through the cover / gasket first before fitting.

[dazza]

I've removed the valve cover again. See pick below.

If the rear check valve is in the very end of the pipe i don't have one.

Don't know what to do now.

[olethalb]

check gasket around bolt holes make sure you haven't nicked it anywhere (unlikely you have but worth a check)

stick your finger down rear pipe if it goes all the way you in you have no check valve

check mating surfaces are clean and smooth

also inspect cam cover for damage etc unlikely as that is

[dazza]

I had another go. Its a bit better still leaking from the back on the right this time.

Debating getting a new valve cover or replacing all of the old bolts??

[dazza]

Went to the stealers today they had a handful of bolts.
So the back and middle row of bolts have all been replaced with new bolts.

There is still a small leak from the very back right. Going to leave it a few days maybe it will stop.
Should i also replace the front row of bolts?

[Scottymon]

Did your leak ever completely stop @dazza