What might stem a leaky hooter? Timeless problem! (5)

I believe the answer is:

issue

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'problem' is the definition.
(issue can mean a problem or difficulty)

I can't explain the rest of the clue.

(Other definitions for issue that I've seen before include "Argument" , "Topic; give out" , "Question in dispute to be settled" , "Kids" , "Hot topic; outcome" .)

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