Intake Air Connector on 2.7 Tacoma

I'm replacing the spark plugs for the first time on this newly acquired truck and I have a question. The metal canister attached to the intake air connector has some type of liquid in it. Is that normal? Is there supposed to be a certain amount? How is it serviced?

 

Not supposed to be anything in there, I'd drain the fluid out.

Not sure what the original intent is, but I'm thinking that it could prevent hydro-locking. If a no more than quart of water got past the air filter, it would settle in there (and the resonator) before it got to the TB and then the cylinders.

 

Thank you, Rick. Now I need to take it apart again to drain it. Do you figure I'd just have to aim the hose downward to drain the water, or would I need to remove the cap that is screwed to the side of this container? I wonder how it got there in the first place.

 

Uhh, you lost me there. What 'cap' are you talking about?

You'll have to completely remove the 'intake air connector' (shown in your diagram), and remove any liquid from it. The only way to get water in there, is to drive thru a stream where the water is up to your windshield . It shouldn't happen.