Spongie brakes

[Bessaboy1949]

Morning all

My brake pedal has suddenly gone soft on first press, having to pump up pressure to get brakes to work (Not ideal).
I am not seeing any fluid leaking, reservoir level is stable and when the pedal is pumped the pressure hold.
where would be a good place to start the investigation?

cheers

[jrt]

Probably air in the system or old fluid. Best to bleed and change it.
David.