The standard diverted valve

[Scott-R]

The black circular valve that sits on your intake pipe and connects to your rocker cover.

I took this valve off and it's no longer a one way valve think I mite have broken it ha

In my eyes this valve if broken would stop the engine from being able to boost up as its a boost leak?

Is this that important if this is broken could this stop my car from boosting up, the turbo is spooling but the boost is staying at 0.

[Scott-R]

It's actually called the pressure regulator valve.

[james2]

my ones straight through. Well i think it is ,ill have to check it .

[Scott-R]

I thought the point of the valve was once the pressure gets up in the engine it slowly lets it out if it gets too high,, hence why the golf I'm looking at isn't getting any boost because its letting all the boost out?

[james2]

Im not sure but hows the boost get in the engine, im not sure what the black thing does apart from letting the engine breath

[GTi_James]

watch the vid i just posted on the forum, gives you all the info you will need 

[Scott-R]

I am on about the breather valve tho, could this valve cause loss of all boost?

[james2]

watch the vid i just posted on the forum, gives you all the info you will need 

we are talking about the engine breather i think. 

[james2]

I am on about the breather valve tho, could this valve cause loss of all boost?

i can not see this causeing 0 psi , does your car pull fine if so its proberly your boost gauge

[Scott-R]

We are indeed could this valve being faulty cause total loss of boost?

No it's not pulling fine the car has no boost like a non turbo car.