fcuk1_6

I'm finding the brake pedal very stiff and brakes unresponsive just after coming off boost on my WRX, my mate (a toyota tech) suggested that it might be a goosed one way valve on the vacuum pipe but having looked I can't actually find one. Any suggestions?

fcuk1_6

forgot to mention its a blobeye

WRX400

iTrader: (1)

Yes it is one way valve, not easy to spot as the rubber pipe just thickens up a bit between the master cylinder and metal pipe fixed to the bulkhead/firewall.

LewisL

iTrader: (3)

As above its in a rubber pipe on the right hand side of the engine bay by the intercooler it goes into a maetal pipe which leads round to the brake servo/master cylinder etc.

i changed my hoses over to red 1's & forgot to put the 1 way valve in & it did effect the brakes when coming off boost straigh onto the brakes!

I was also getting a boost leak type noise when boositng over.5bar

fcuk1_6

Thanks guys, managed to find it and testing the valve by blowing through the pipe it does little to restrict the flow so I'll need to replace it, it looks to be 8-10mm, does anyone know for sure or where I'd be best getting one?

LewisL

iTrader: (3)

I'd give somebody like scooby spares on here a shout mate they are bond to have hundreds of the things!