You need to have a cooling system pressure test to determine as to where it is leaking now. Repair the leak and it should be okay.
No. It will cause a problem with both back pressure and noise.
It would make that noise if something was clogging the drain pipe. You can call a local plumber or plumbing business. Hope that Helped!!
What would cause a grinding noise after a tire is replaced and the brakes are not worn?
I've had that before, and it is generally air in the lines, caused by a clog.
Take it to the garage and have them check for a cracked rotor or a loose caliper.
Bad vent or particle stoppage
A whistling noise indicates a vacuum leak.
sounds like you are too far down the launch ramp or you live in a really wet area ..