Corolla 98
when the engine is start, a sound of air like Tyre Puncture comes from Brake survey
this air sound comes from pipe which comes to brake survey, and pulls air.
but
my survey is not make pressure, and air goes in the pipe.
it seems like the survey is leaked,
where as the brakes are working OK.
should i changed the survey, or leave it as it...
if i leave it, will it make any other problem to my other portion of my car
