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PCV Hoses

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Old Mar 8, 2025 | 05:47 PM
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Default PCV Hoses

Hello guys, I have a 04 C5, I was cleaning the throttle body and the MAF sensor and I saw a lot of oil on the intake, this after a clutch change (where they have to disassemble the intake), before this I haven't had any problem with oil on this part.


Are the hoses from the PCV system connected correctly? I couldn't find a picture or diagram like the one i'm posting.

(I know my engine bay is dirty!)

Thanks!
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Old Mar 9, 2025 | 11:47 AM
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It looks like they reversed the hoses from your PCV. The hose from the valve cover should go to the throttle body, and the hose from the valley cover should go to the intake manifold.
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Old Mar 9, 2025 | 04:46 PM
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Originally Posted by SideOfTheRoad
It looks like they reversed the hoses from your PCV. The hose from the valve cover should go to the throttle body, and the hose from the valley cover should go to the intake manifold.
Suckin that oil right out of the valve cover. Nice.
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Old Mar 9, 2025 | 05:34 PM
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wow, thats a lot of oil in that intake.
glad you found this in time.
Check the condition of the whole PVC hoses and reroute as advised above




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Old Mar 9, 2025 | 07:39 PM
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Thank you guys! I knew something was really bad when the car started throwing white smoke from the exhaust! Do you recommend taking off the intake to clean it? or that oil will get burned on the cylinders eventually?

Tom
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Old Mar 9, 2025 | 07:46 PM
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If it was my car, I would pull it and clean it.
clean the throttle body and MAF sensor while all apart
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