vacuum gauge goes higher when i turn steering wheel..

[karls cupra]

same as title says, when the car is at a stand still and i turn the steering wheel my boost/vacuum gauge nedle moves higher, and also when i press the brake pedal and release the pedal it dose the same the nedle moves, can any one confirm this happens to them as well or is it just me and i got a vac leak some where, that i cant find ..

 

[R100XET]

ive never notice it mate but ill be checking when i next go out

 

[IbizaAlex]

When you move the steering the revs jump up a little thus the slight vac change and the brake servo uses some of the vac too.

 

[karls cupra]

When you move the steering the revs jump up a little thus the slight vac change and the brake servo uses some of the vac too.

so this is perfectly fine then .. its just im trying to find a fault with my brakes and i have changed a few bits like pads and disc all round, new slide pins due to a seized one, and new sevrvo to mani pipe, only thing left is the servo and brake master, cause some times they are really good then all of a sudden the pedal goes really soft. and i thought maybe a vac leak some where..

 

[__B3NNY__]

Perfectly normal, its the engine working very slightly hence the slight vacuum change as Alex said.

 

[karls cupra]

Perfectly normal, its the engine working very slightly hence the slight vacuum change as Alex said.

cheers mate ...

 

[DPJ]

so this is perfectly fine then .. its just im trying to find a fault with my brakes and i have changed a few bits like pads and disc all round, new slide pins due to a seized one, and new sevrvo to mani pipe, only thing left is the servo and brake master, cause some times they are really good then all of a sudden the pedal goes really soft. and i thought maybe a vac leak some where..

When you say the pedal is soft, you mean pumping makes no difference and there is a lot of travel, but the brakes work fine when they bite?

 

[karls cupra]

When you say the pedal is soft, you mean pumping makes no difference and there is a lot of travel, but the brakes work fine when they bite?

yeah mate the servo pumps up when ignition is off and they dont pump up when ignition is on and pedal stays soft, i spoke to a aa guy and he reacons brake master cylinder..
cause when i first start car up and choke is on the pedal is better then once warm its soft again..

 

[karls cupra]

any one know where i can get a brake master cylinder from been on euros web site they dont do it try a local car shop they dont list the car ... plz help