It was actually pretty dirty that day... I'm a clean freak when it comes to anything but especially my car... Inside/out & under the hood.Replace the PCV hose first. Odds are you are running somewhat lean to begin with.
And no that is not the hose I would recommend using to suck up Seafoam. Use the little one just above the light green cap on the passenger side. I feel that a large hose delivers too much too fast and can cause harm. A little at a time is just safer IMO.
BTW, nice job in keeping the engine clean. I can't stand some of the corroded ugly dirty engine bays on here. Noting worse than having to clean grease/mud off an engine before you work on it.
As far as the hose sucking up the seafoam... the one off the back of the valve cover would work though if I was really careful and just putting like a quarter of the tip in the seafoam itself?? The hose above the green cap off to the left... which hose is that?
Sorry for all the Noob questions.... But I gotta learn sometime and I won't pick anything up if I don't ask!