Today I had the hood opened when I cut the engine off and I heard a “poof” of air being released somewhere under the hood. Standing at front of jeep I had someone start and cut it off. It does it every time. I’ve never heard it before today. It sounds just like when you bump the valve stem for half a second. Cold start and shut off at operating temp. And warm start running for at least an hour, both made same result.
2014 jku sport 180k
2014 jku sport 180k
