Yes, I get the woosh of air
I'm pretty convinced that I have a fuel delivery problem. As soon as I get my new credit cards (LOST MY DARNED WALLET) I'm going to order a pump and filter.
Why? The pump shouldn't be making any additional noises other than the whir of pressurizing the system...........
Tom
Do you not think this revelation worthy of investigation first, especially as you suspect a fuel delivery issue?