whistle sound when applying brake...

[freakyp]

help needed... y there's a whistle sound when applying brakes on my brother's fd??

 

[RERider]

sound from where?

 

[freakyp]

not very sure but from inside it's very clear...

 

[RERider]

from the engine bay or from the rotors?

 

[freakyp]

found the problem... it's from the brake pump... thx...