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2017 Honda Accord whistle and rough idle

I have a 2017 Honda Accord V4 CVT transmission can I keep you in like a small little whistle sound almost like a kind of a high pitch noise but like a very very small and I had a rough idle sometimes delays on them starting has anyone had this issue and if so what is dissolution

Sounds like a vacuum leak. Check under the hood for a disconnected hose, to start.