I've got a 2017 ram 1500 with only 15k miles. I'm heading a whistling sound coming from the engine. It's high pitch almost like a teapot on the stove. I'm assuming its a vacuum leak. I've sprayed starter fluid to try and locate it. Can't seem to find it. My gas mileage has dropped slightly on the avg. On the the dash. I'm trying to avoid bringing it to the ****ty dealership I got it from. I hate those people more than anything. Anyone have a diagram where all the lines are because I can't find anything. I'm sure this is something I can fix on my own. Any advice would greatly be appreciated.

 

Vacuum diagrams should be posted on the underhood sticker. Even if you hate the dealer, I’d certainly be using my warranty.