Gently pull out the vacuum pipe, start the engine and place your thumb over the pipe, if the pipe latches onto your thumb like a good un, you have a duff servo, if the pipe is not interested in your thumb, you have a duff vacuum pump.
Rob
Hi
The brakes on my disco 1 300tdi has gone hard and it does not want to stop. Please help with some suggestions.
thx
aint that just usual