So I spent my day to decarbonize the throttle body and intake manifold instead of working on AKs, the amount of filth was enjoyable to remove, and checked the spark plugs and PVC valve for giggles. It's staying clean!

The air inlet temp sensor plug broke on me so time for a new one. C:

I discovered there is an ethanol free fuel station not far from where I live and taking advantage on purer cleaner fuels in older vehicles.

Could be placebo, but I never felt this car idle so smoothly after this fuel up.

Noticed this on the Kia too after filling up on E0 87 in the Dells.