The Sea Foam is really not gonna do much injested into a 4-stroke motor like that. Its basically mineral spirits. You would get better use out of it by dumping in in the crankcase shortly before an oil change, so at least it would clean out the oil passages. All the Sea Foam is really gonna do is smoke like a mesquito fogger for about half an hour. Your neighbors will love you for it. Pour a couple of cans of Berryman's Chemtool (Walmart) into your gas tank and you'll get a better cleaning of the injectors and intake area. Get a spray can of Chemtool and clean your throttle-body and ICV and you'll be good to go.
Sea Foam is great in 2-stroke motors as a decarbonizer and fuel stabilizer, but it really has limited use in 4-stroke motors.
You sure that's the brake booster and not the ICV hose?
Yea, the ICV hose goes from the intake bellows to the underside of the manifold, a little further forward. Nowhere near where he's pointing to. you can barely make it out in the pic, but you can see the hose going toward his brake booster
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