Another 2013+ leaking valve cover...

[ecoboostsho]

Ecoboostsho, learning what that sensor does is good information to know and congratulations for finding the issue and correcting it. 

Thanks! It is officially called the "Boost Solenoid" on Fordparts.com and it is obviously attached to the wastegates so it definitely controls boost levels.  Part #9K378.

[SHOdded]

Full part number for the boost solenoid is BL3Z9K378A I believe.

[ecoboostsho]

Ahh...yes. Thank you.  The diagram was abbreviating it apparently..

[ZSHO]

The engine compartment fuse box has a fuse for the wastegate,believe its a 15amp. Z

[avidmotion]

HMMMM....i am out of basic warranty. I do have the useless CPO certified warranty. Ford said they need to replace the rear(right) valve cover, gasket, pcv, and new version oil separator. Under Certified warranty the valve cover and gasket are under warranty, BUT not in my case. Nothing wrong with valve cover or gasket but the oil separator which is not under warranty. The new revision oil separator does not fit the old valve cover, so they have to replace it and I have to pay for it. said cover was 339, pcv was 9.00 and oil separator was 89, total with labor 750 plus tax etc. I called Ford Customer care to argue but got no where except a three way shout match with ford rep and dealer rep, bottom line not warranted. I copied the part numbers from this thread...
currently Tasca parts...
AA5Z-6A785-F 60.99 SEPARATOR
AA5Z-6A666-D 4.91 PCV
AA5Z-6582-E 129.99 VALVE COVER WITH GASKET
I will do my self...but not sure why my RXP dual system catch can did not catch all this...

[NITSOOB]

With smokey exhausts,  I believe the problem lies entirely on a bad oil seperator.

For whatever reason, its unable to relief pressure thus causing an increase in oil pressure(which end up going through the turbo seals), and also causing increased pressure in the valve cover.

Any catch can will not work simply because theres nothing to catch with a fault oil seperator.

Quick fix IMO woild be to replace it with the old version, keep an eye on it because it would eventually have to be replaced.

My SHO smokes while idling from time to time also and am out of warranty.

[AJP turbo]

With smokey exhausts,  I believe the problem lies entirely on a bad oil seperator.

For whatever reason, its unable to relief pressure thus causing an increase in oil pressure(which end up going through the turbo seals), and also causing increased pressure in the valve cover.

Any catch can will not work simply because theres nothing to catch with a fault oil seperator.

Quick fix IMO woild be to replace it with the old version, keep an eye on it because it would eventually have to be replaced.

My SHO smokes while idling from time to time also and am out of warranty.

I don't see anyway a bad oil separator can increase oil pressure...If the oil separator is completely clogged and crank case pressure builds from combustion gases that blow by the rings.

If crank case pressure is not relieved your oil drain for the turbo will also become pressurized as it's part of the crankcase and that can cause the turbo to not drain as well which can cause oil to leak through the seals from the CHRA of the turbo.

I've been through this with precision turbo....Not sure about garret turbos but most are similar...The center sections are usually metal snap ring seals so there is really nothing to go bad...Precision would rebuild turbos from customers that insisted the seals were bad but they would also advise that there was a drain problem or crankcase pressure  problem or oil feed was oversized

Your oil feed is stock and your drain is OEM so those are good but if your separator is bad and your crankcase is pressurized that is usually bad.

[sholxgt]

That's BS!  Oil leaks are covered under CPO.  It's their problem, not yours, if additional parts are required!

At the very least, I'd make them fix the leak.  Even if that meant using the original parts.  It's required under CPO to return the car to factory (non-leaking) condition.

[sholxgt]

Just looked it up.  Seals and gaskets as well as valve covers are covered under CPO.

I would be livid and mention your further calls to the EPA, NHTSA, and DOT regarding your under warranty vehicle that is leaking oil and the environmental hazard that it's creating.

[ZSHO]

It should have an internal pressure relief valve inside the oil separator.
I would remove and inspect,clean the oil separator using some simple green .

Remove the PCV valve turning it counter-clockwise.
Remove the 2 bolts using a 8mm socket and one clip to gain access. Z

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