I think the green & yellow plastic valve is called the air inject valve?

I have heard its a one way valve.

Most that I have seen flow from lighter color to darker color.
Not sure of that.

My question is should this valve be reversed to have green closer to intake side & yellow more toward distrib side?

Does the air flow into the intake here or away from the intake?

Sorry, I really am trying to learn engine mechanics & help get my old car straightened out.

I would assume it being an air intake that air would flow into it.

So its possible that this valve being backwards would essentially stop any air getting to intake & its a quad connected to WUR & distrib vacumn
& it really should be hooked up right...

Thanks...

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83 500 SEC Euro 198K