Brake Booster Question

[darinz]

Just a quick one but if you put your foot on the brake at idle and engine rpm increases then this is because the booster is leaking? Petrol efi motor running map pressure sensor.
Also brakes feel isn't 100%.

[kbushnz]

Not sure about the rev's....
But have a read thru this, skip down to the diagnostic bit... And then you can check yours and see if its o.k
http://www.autoshop101.com/forms/brake05.pdf