No servo assist

[martyn92]

My brake servo seems to have stopped working. I pulled up into the drive and seemed fine but after doing some intake pipe alterations I set off and now I have no servo
I have checked the vacuum pipe and seems to be vacuum.
However the plastic piece thats connected to the servo spins around quite easily, could it be that? Also, when I was putting the engine back onto its mount i managed to jam a metal pipe against the back of the engine and servo but I cant see that damaging it ?

[gareth7]

This plastic piece you mentioned, does the vacuum line connect to it? If so, this is a one way valve and it shouldn't spin around as easily as you said.........sounds to me like you've damaged it and you need a new one.

[bigcheez2k3]

The metal pipe, is it the one that runs along the top of the engine and bolts to the intercooler?

IIRC that goes to the servo.

[martyn92]

Its that piece that fits into the servo that had come out, pushed it back in an feels better than before ! Will inspect it properly soon to make sure it doesnt come out again

[gareth7]

That's more than likely the issue then...that's the one way valve I mentioned in my earlier post. There's a rubber grommet in the servo that it fits into, make sure this is correctly fitted.

I had one of these fail on me a while back, if you do need a new one there readily available from Pug at about £20 each IIRC. There's two different types depending on which make of servo you have fitted.

[Dum-Dum]

It'll be a vac leak somewhere, if your getting it at the pump then listen along the line for where it's sucking in.

[gareth7]

^this.......check both of the braided flexi pipes on the vac line between the pump and servo too.........the rubber inside the braid can split.