Recently ive noticed my bravo has this running water sound when the engine is turned over, the noise increases when its revved but seems to dissapear once im driving! the noise is coming from behind the dashboard like under the steering wheel

I only noticed it recently so im thinking it could be since the cold weather! I think it may be the cooling system needing bleeding, could this be right?
if so can anyone tell me how to bleed a bravo? the only guide i found was for a difernt Fiat

so do i locate the bleed vavles ( 2 in the bravo?)
fill the coolent bottle to max,
turn engine on
unscrew both vavles
when lower valve squirts pure water close it
repeat for higher valve
the top up to max
job done?

or am i missing something?

anyhelp is greatly appreciated!

From what I remember, there are 2 bleed nipples on the radiator on the left. There should then be 2 more near the bulkhead towards the right, they are on stalks and require a flathead screwdriver to open. The water can be very hot!!

thanks mate so ill look out for 4 valves then, does the screw come right out or just loosen?