1972 Oldsmobile Cutlass Supreme Break Booster Problem? Unidentified sound?
I was given a 1972 Oldsmobile Cutlass Supreme from a relative a few months ago and
up until a maybe a week ago i noticed a hissing sound coming from what it seems like
behind the dash on the left side of the steering wheel. Seems like its coming from the
break booster. Its not a hissing sound when i apply the breaks but a hissing sound
right from ignition and as i accelerate it also gets a bit louder. Anyone know what it
might be? The car is in great condition by the way, need to change the oil pan due to a
leak but in the meanwhile i'm keeping an eye on the level every few days. Thank You
guys.