[dandugi]

@bobdec In the initial OCC installation (first image), I did not remove the hose that connects the rear valve cover to the snorkel. I only removed that hose after I removed the hose between the OCC and the intake (latest setup, last 2 images). Are you suggesting that I instead, reconnect the OCC to the intake, but leave the snorkel and rear valve cover capped?

 

[dandugi]

Hi friend

I have the same issue with my 17 Sportage 2.4
It consumed 1l every 1000mi
I changed my pcv valve and the issue is same

Every technician that inspect my car said the problem is valve stem or piston rings
No leaks for the engine , and the is some poor performance while driving

I bought Overhaul kit and piston rings to start rebuild my engine , but i got confused when i saw your post here

So can you in points explained us plz
About how did you repair this problem

Did you changed any engine parts ? Or just you installed the OCC !!
what about after installing the occ did the engine consumed any oil !



as you said tell today I didn't found any one on internet wrote about fixing this problem by changing engine piston or valve stem ! Actually no one wrote about any way to fix this problem !

Also let's says what you did fixed that problem and what about owners who did pressure test + leak down test and there was different in results confirmed that piston rings & seal valve stem damaged !!

Thanks

Hi, I suggest that you do as I did, spend $30 on an OCC to see if your oil is coming from the PCV valve. And if it is, vent it like I did. Your oil consumption would then disappear, as mine did. It is my understanding that no dealer or manufacturer would ever tell you to do this, as this would be against emissions guidelines, lawsuits, fines. But truth is I would rather do it and eliminate all the potential dirty intake, dirty valves, burnt valves, adding oil every week, etc. The intake valves will stay clean and the motor will last a long time.

 

[dandugi]

I am a tilt'n'load tow truck driver. Over the past few years I towed at least a dozen 4 cyl Hyundai/Kia cars that had engines suddenly seize up. From what I have seen on the forum, it is a well known issue and the manufacturer has provided new engines to those affected. Is it possible your oil consumption issue is an early indication of the failure that caused the seizures ?

I believe they are seizing up, because the oil is being sucked out of the valve cover through the PCV valve into the intake, and owners are not checking/maintaining the oil level, and they basically run out of oil. In my opinion, as engines age/wear, the oil splatter and condensate in top end must change, or the baffle in the valve cover becomes dirty or something, allowing more oil to get sucked out. All that oil going onto the intake valves in a direct injection system will eventually kill it too (I burnt valves twice, looked like someone took a bite out of them)

 

[dandugi]

Hi friend

Let's says that i installed the OCC and it did catch oil that comes out from the PVC
Ok how can i let that oil again come to the engine ? So by this i don't lose oil !!

Otherthing , i will do pressure test / leak down test for my engine , if the results shows that i have bad piston rings or valve stem seal , do i have to rebuild my engine !

Thanks

Hi, I dont think you read my original post well!

I did 2 phases, and provided pictures of both.
Phase 1 - Install OCC inline, and measure oil being lost. It was a significant amount, and so I went to phase 2. Do not add the accumulated oil back into the motor, throw it out.
Phase 2 - Disconnect intake manifold from OCC, add a breather (you must drill out the PCV valve, and cap the intake manifold). No more oil will be sucked out of the valve cover.

Yes, do a compression and leak down test, its cheap and easy to do, just to verify nothing else is wrong.

 

[dandugi]

I am following this thread very avidly. I have a 2016 Sorento I4 with oil consumption issues and my father-in-law has a 2014 Sorento I4 with oil consumption issues. Mine has a warranty but his doesn’t. He is trying the approach of putting just the front PCV hose into a vented OCC and seeing what happens. He’s retired and has the time to experiment with this idea, so I’ll pass on anything we learn.

Sounds good, but it is recommended that the PCV should have the guts removed (drilled out), so that there can be no possible restriction, since the vacuum will not exist on it anymore. You don't want the possibility of creating pressure in the crankcase.

 

[dandugi]

If you maintain the oil level and don't let it run out, will it prevent premature failure of this engine? Mine used oil since new, but now at 66K I'm starting to see increased consumption.

If the oil is being sucked into the intake, it will eventually cause engine failure. The valves are not cleaned by fuel in a direct injection engine, so they get dirty with deposits, cause detonation, and eventually burnt valves, requiring a top end rebuild. Look at your spark plugs. If they look nasty with oil etc, it is a sign.

 

[dandugi]

This is doing nothing for you. You have blocked off all chances of ventilating the crank case. If your lucky you will burn another valve. If your unlucky the crankcase will explode from the oil becoming volatile from lack of ventilation. There is no way that catch can will pull any oil. there is no vacuum pulling through the PCV system. As a matter of fact, you have no PCV system anymore.

You are wrong, it is vented. There is no crankcase pressure building up, it is completely open via the PCV valve (internal check valve was removed/drilled in phase 2, you can see through it). The catch can was installed in phase 1 between the PCV and the intake to measure the oil being sucked out of the PCV. I was measuring 1 quart every 600-700 miles, due to excess vacuum from the intake. In phase 2 the intake was separated from the OCC, eliminating the vacuum suction, and the oil loss. Now there is 0 oil loss, and vapor/gasses breathe out, the oil is not volatile. You can easily see and smell the vapors coming from the OCC breather, it is breathing just fine, and the intake valves are staying clean. The intake valves will never need to be walnut blasted like other GDIs. However, I see you have a turbo. I have seen online there is a different PCV delete procedure recommended for turbos.