2014 Oil burn...

[Kuhndog-11]

Well last week I checked the fluids as I have done Every week since buying this thing and found it to be about half a quart low. Seemed odd. Have owned it for a few months and about 8 thousand miles. hasn't burned a drop until now. After jumping on here and researching I found that the PCV system in these is ******** lol. I ordered a new GM valve cover to replace the PCV. Number 1 and 7 are showing signs of the typical oil issues on these engines. I don't understand how the oil is getting in the cylinders though. The throttle is almost spotless. Does it have to do with the AFM/DOD system? If the oil burning continues I suppose I'll compression test and do a leak down on it. With just under 55k it is definitely concerning.

 

[Bill 1960]

Any change in driving cycle? Sometimes a vehicle driven daily to work may consume differently on a road trip for example.

 

[Doubeleive]

how often are you changing the oil? many of us stick to a 3k or 5k (at the most) routine, 8k is really pushing it in my book, especially with the cylinder shut-down

 

[Fless]

Hopefully you ordered the updated valve cover for the driver's side.

 

[wsteele]

The 2014 already came with the updated valve cover and the AFM deflector.

If it were me, I would install a catch can between your PCV and intake manifold (about a 15 minute job) and see if it is pumping oil out the PCV and into the intake. If not, then I would probably do a leak down test, just to get a better picture.

 

[Kuhndog-11]

Any change in driving cycle? Sometimes a vehicle driven daily to work may consume differently on a road trip for example.

No change there. It's always a mix of city and highway, more on the highway side.

 

[Kuhndog-11]

how often are you changing the oil? many of us stick to a 3k or 5k (at the most) routine, 8k is really pushing it in my book, especially with the cylinder shut-down

Using amsoil I feel confident taking it to the factory 7500 miles between changes. The oil itself has almost 5k on it and is still very clean and has good viscosity.

 

[Kuhndog-11]

Hopefully you ordered the updated valve cover for the driver's side.

Yes it is the updated one.

 

[Kuhndog-11]

The 2014 already came with the updated valve cover and the AFM deflector.

If it were me, I would install a catch can between your PCV and intake manifold (about a 15 minute job) and see if it is pumping oil out the PCV and into the intake. If not, then I would probably do a leak down test, just to get a better picture.

I didn't look too close but typically PCV's feed in before the throttle body. Is that how it is on these? Not a GM guy so the 5.3 is all new to me. If it feeds in before the throttle body I'm good. The throttle is very very clean.

 

[Kuhndog-11]

Is this the right routing for the PCV hose on a 14?