When turbo ok, got good brakes too.

[barney]

Hi all I drive an audi a6 1.9tdi se avant 130bhp.
When the turbo kicks in the brakes are good too. The brake pedal only needs a light touch at the top of the stroke to brake, pointing to a problem in the vacuum system but i 've had all vacuum system checked out by 2 audi garages.No fault found. Is there a check valve in the pipe to the servo? and could this be the fault?
Cheers and Merry Christmas to all.

 

[barney]

Problem solved by independant audi technician Phil from Elite vehicle repairs at Thornaby, Cleveland mobile telephone 07817847416.
He replaced the Tandem pump and all is ok now!