Do I have a Vacuum leak? How can I find out?
2013 Y61 CRD.
My brake pedal is rubbish, it's spongey and sinks almost to the floor, I've had lousey pedals before in other cars, but this is the first time I've actually been worried about it in 35 years of driving.
Also, if I depress the clutch more than once in 3 or so seconds, the pedal gets harder & harder to depress, which says to me that the vacuum system isn't vacuuming back up quick enough.
This makes me think, I wonder if I have a vacuum leak somewhere that is causing these problems? I don't know much about the vacuum system on the Y61s or vacuum systems at all TBH.
How can I check for a vacuum leak? What should I look for and where should I look????
Thanks for any help.