They sell sprays like CRC intake valve cleaner, Berryman has one and Gumout does too. I suppose they help a little. Your valves don’t look that bad. This user used the zip tie method and gumout cleaner and got much better results. I was planning to do that to my 1.6L at around 100k.

https://www.kiasoulforums.com/posts/1364752/

 

2018 base Soul with 1.6L GDI 112k miles. Even tho the fuel is injected downstream of the intake valves, they must get wet with fuel on the air side. Or I have a lot of PCV'tion of oil fog going thru the intake. I have included pics I took when I changed the fuel injectors and had the intake off.
I am imaging that there is some sort of miracle mechanic in a can snake oil that will help wash it away via the "throttle body"?

After treatment, I plan to disconnect the PCV from re-entering the intake.

This picture is about average for the eight valves.
View attachment 146892
Thank you in advance

Yes,
No gas ahead of intake valves.
You are getting PCV waste there.

Suggesting...
Check/replace pcv valve.
Use a gdi intake valve cleaner.
Install an oil catch can.

 

.... Or I have a lot of PCV'tion of oil fog going thru the intake. ....

That is what I believe is going on.

Once disconnected my intake box from the intake hose and I saw oil weeping from the small hose that attaches midway between the box and the intake valve.

On an old pickup I had, the PCV line fed into the air intake box. There was a small separate filter that attached to the end of the hose inside the air box that I would change along with the engine air filter.

I wish the Kia Soul PCV line was configured the same into the air box, with its own filter.

After treatment, I plan to disconnect the PCV from re-entering the intake.

And route it where? Do what with the PCV & the PCV hose?

This picture is about average for the eight valves.
View attachment 146892
Thank you in advance

Looks way better than mine Kia Soul Forums - 1.6Liter Engine: Pictures inside cylinders

 

That is what I believe is going on.

And route it where? Do what with the PCV & the PCV hose?

Looks way better than mine Kia Soul Forums - 1.6Liter Engine: Pictures inside cylinders

Gonna route down low so it drips onto the ground! Or gives a continuous rustproofing mist to the underside as driven, lol.