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2018 G80 3.8 Oil Catch Can Install

Studlee

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Joined
Sep 28, 2020
Messages
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5
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Genesis Model Year
2023
Genesis Model Type
Genesis G80 Sport
I didn’t see any Oil Catch Can (OCC) installs specifically for the 2018 3.8 G80, so I thought I would post this as it may save some else some time. (This procedure includes the steps you would take to replace the PCV)



The hardest part of the install was locating where the OCC hoses should connect on the engine. After figuring out the location of Positive Crankcase Valve (PCV) at the rear of the valve cover on the passenger side and finding the correct hose connection on the Intake Manifold (it is very tight in this area). You need to select your OCC mounting location based on: distance from the connections, ease of mounting, ease of access the OCC to unscrew and empty the OCC. I choose to put mine near the Air Filter Box which requires additional hose.



Steps:

1. Remove Engine cover by gently prying each corner of the cover by hand.

2. Remove the air hose (accordion) that connects throttle body and air filter by: Loosening the hose clamps at each end of the hose and then compress the spring clip hose clamps on small hose at front of accordion as well as the clip on the larger hose on front of the accordion.

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3. Next, remove the nut (10mm) that holds the “bladder” section to the intake manifold cover.

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4. Remove the accordion hose.


5. Remove the three bolts that hold down the Ignition wiring harness to the Valve cover to get better access the PCV area.

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6. The PCV is located at the back of the passenger side rear of Engine Rocker Cover.

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7. Find the PCV Hose that connects PCV to the Intake manifold. Compress the spring clips from both ends of the PCV Hose. (Note: This is a tight area) Remove the hose.

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8. Based on your OCC mounting location, cut your hoses to length and connect to the PCV.

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and the Intake Manifold Connection.





9. Connect to the appropriate hose to the OCC, Inlet should be from the PCV, the Outlet should be to the Intake Manifold Connection.



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10. Mount the OCC. I simply attached near the Air Filter box with two zip ties.



11. Reassemble starting with the three bolts for the ignition wiring harness, then reinstall the accordion.


Tools used: 10mm Socket and Long Pliers.

Parts used: OCC: Evil Energy Baffled Oil Catch Can: Oil Separator Catch Can with Breather Filter 300ml Universal Aluminum (Amazon). Additional 3/8” ID Fuel Hose, an Additional hose clamp and a couple of zip ties.
 

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Great info, thanks for posting.
 
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After about 300 miles here is what the OCC collected. I am glad it is no longer going to my intake valves. Next step is to run a can GDI Intake Valve cleaner through the Intake.
 

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This was a very helpful tutorial for my 2015 sedan 3.8. used zip ties also to attach next to the engine air filter box. Thanks!
 
This was a very helpful tutorial for my 2015 sedan 3.8. used zip ties also to attach next to the engine air filter box. Thanks!
Was only more 3/8 the size line needed?
 
Hey, How did you connect the outlet of the catch can to the intake manifold connection? It seems to be in a very hard to reach place.
 
Steps 7-9. It's tight in there but the 3/8 hose has enough flexibility to connect. I leaned over the passenger side fender to reach in and get it connected.
 
So turns out the sizes of each end is different in the OEM PCV hose (part number for me was 26720-3CGB2). The clamps on both end that seal the tube are also of different sizes because of it. I found that a 7/16 hose is about the same size as the other end. I was able to use the original clamps and get a tight seal with it.
 
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