Skoda_Owner89

Any new findings? Have you removed the plastic part?

Try to remove the plastic part, let me know how it is behaving.

Can you post a video with the noise you currently have? With the oil cap removal and everything. Just to compare to mine with the plastic between the rubber and the spring

Yep, after I've removed the plastic part from the pcv head. Its only rubber diaphragm and original spring

No weird noises, no excessive suction on oil cap. VID_20240116103431.mp4

I will upload a video later today.

How can I add a video to this post? If I film with my camera it will be a very large file

I'll keep you updated about this mod

Yeah they don't want to deal with other problems or diagnostics in my garage. Seems like everyone throwing responsibility at each other. Worst service ever.

I removed the plastic part that sits between the rubber and the spring in pcv head cover and its much better now. I've added a picture of the plastic part I'm talking about. The plastic probably too thick and spring is too short. When using it without the plastic part, its much better. Try this method and let me know

In the authorized garage they wait for check engine light but there is none. Don't know what to do next cause they changed the pcv 3 times already and still same problem.

Do you still feel suction on each of the two holes of the PCV head and have a "vacuum cleaner sound"?

Thank You for the information! I'll keep you updated if I find anything about this issue. They changed 3 pcv's and still same noise. My brother has the exact same engine and his pcv is very quiet, no air vacuum from the pcv holes. But, the suction in the oil cap and the dip stick is still there. I don't have any idea why mine making the exact noise as yours in your very first video.

About the fuel tank I really don't know. Do you still feel suction in the oil cap with new engine and PCV?

I have the same noise on Canister Evap pipe. I replaced it since you can hear it through the cabin. After replacing it with the original part, same noise. The mechanic told me it's a normal sound for those engines and it's not an engine knock or something like that. It related to the fuel lines and it will be the same noise even if you replace it over and over.

Thank You for the detailed response. I'm sorry about the engine, I hope that from now on everything will be as good as new and better. As you mentioned, you currently still have noise coming out from the pcv holes? Do you still have suction from the oil cap and the oil measurement stick? Just want to make sure. My engine feels good overall but I don't want to make it worse over time by not finding the problem.

Hello @Superb_Owner_1 I have the exact same problem in my 2020 Skoda Octavia 1.5L engine 150hp. Same suction in ths oil cap and oil measurement as well as hissing noise coming out of the pcv and stops as soon as I put my finger on it. Did you manage to fix this issue?