PCV Excessive

Justgregkas

Justgregkas

Greenie N00B Member
Greenie Member
Good morning. Been trying to figure out lately what is causing my excessive crankcase pressure. So much so, that the gen 2 valve cover breather took a vacation and it blew out almost a quart of oil. I have an oil vented oil catch can that has remained empty for 5k miles. Hoses are clean, no blocks, and the routed lines come from the PCV valve to the OCC then to the bottom side of the JMF intake manifold. The PCV valve was replaced when I did the manifold and the DM pcv plate, approx 1 year ago. Trying to figure out what’s going on. Suggestions and thoughts welcome. Thank you.

Performance
1. BNR s4 (11/25/2023)
2. Bosch 3 Bar MAP (11/25/2023)
3. XS Power exhaust manifold (11/25/2023)
4. DM 3.5” Aluminum Intake (11/25/2023)
5. Damond Motorsports PCV Plate (11/25/2023)
6. Cobb 3 Port EBCS (11/25/2023)
7. CNT down-pipe / 3” exhaust
8. JBR OCC w/ VTA (08/25/2023)
9. JMF Intake Manifold w/ vacuum distribution (11/25/2023)
10. EGR delete (8/2023)
11. Tune by Will @ Purple Drank Tuning (in progress)
12. Serviced fuel injectors w/ Overspeed Seals @ CWTurbochargers (10/2023)
13. HPFP Internals (8/2023)
14. Rebuilt HPFP - Rey’s Rebuilt Kit (PENDING)
15. BOV - VTA on hot side of Intercooler piping
16. MS3 Gen2 Valve Cover with breather cap (2/2024)
 
Justgregkas said:
[mention]Raider [/mention] I ordered a new PCV valve. Aside from taking the intake manifold off, any quicker way of getting to it? That intake is a massive pain the ass.
Click to expand...
A friend with small hands.

Maybe @Enki or @Rokusek can also chime in on possible reasons for the excessive pressure.
 
Underneath is your best bet for getting to the PCV; should be wide open access with the undertray off.

Usually, excessive blowby is caused by either broken ringlands and/or improper PCV setup. Go hit Damond's blog site and find the pic that shows us how you are set up.
 
Enki said:
Underneath is your best bet for getting to the PCV; should be wide open access with the undertray off.

Usually, excessive blowby is caused by either broken ringlands and/or improper PCV setup. Go hit Damond's blog site and find the pic that shows us how you are set up.
Click to expand...

6f241318ae186675abb210c995640050.jpg

This is the route that I have, with the ONLY different that my can is vented and there is a check valve between the vent and the can itself.

Is there anything I can add to help or assist the ringlands? Best way to check/diagnose those? I ordered a new PCV valve.
 
YouTube chose to put it in shorts and I wasn't the one that took the video.
Additionally, in my defense, the result of that video was kind of disheartening.
 
Did this ever get resolved?
upload_2024-9-15_16-55-1.jpeg

I use this setup and it has worked well for me so far.
 
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