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After better lighting and closer look I think it is open and has a solenoid valve to admit air as part of the EGR stuff.
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No, the hose is about 1/2 inch dia. Hard to see what it goes to or comes from.
Most aluminum wheels leak after a while. Corrosion. Remove tires and put sealer on the bead area.
I haven't had the car long and I notice a rubber hose right under the cowl edge with a tee that seems to be open to the air. Is a plug missing? I...