vac pipe? i think

[christomk3gti]

Just checking around the engine bay for leaky vac pipes...

Does anyone know what the small rubber pipe (with braided material around it) which goes on the side of the Right hand side of the Throttle body and joins some kind of cylinder just below it??? the pipe it self is only about 10cm long.

I' noticed mine was split at the joint and the rubber has either perished or is blocked with black crap.

I've managed to refit the same pipe, what exactly is this for??

Cheers.

[christomk3gti]

its the only pipe i can see that has material braided around it. its actually about 15cm long in total. its about 5mm thick.

[Dan_GTi8v]

get some pics up, though an easy way to tell if its a vac pipe is pull it off and see if its sucking or blowing

[christomk3gti]

I'm pretty sure it joins the Idle Stabilization Valve (ISV) to the throttle body/manifold.

Because this pipe is bunged up with crap could this be a problem for a really crap idle and stalling issue??

Cant get any pics up, lost my cable to transfer pics to laptop...
BUT - if u pop ur bonnet on a AGG 8v GTI u will see the pipe. its the only one with material braided around a rubber hose (ovbiously the rubber hose is hidden inside the braided material)

Urgent.... thanks

[christomk3gti]

if u look at the back of the rocker cover u will see it. u cant miss it.

[benvictors]

Sounds like the vac line for the fuel pressure valve, vacuum to keep the pressure up in the fuel rail 

[Dan_GTi8v]

I cant remember what my 8v engine looked like but what ben says does ring a bell with the braided hose, I remember vaguely as I removed this hose and used it on the new engine

[christomk3gti]

ok i'll remove it and put in a temporary pipe in its place and give it a whirl. coz mine has broken down and think the rubber pipe is blocked.

cheers

[christomk3gti]

Wud this pipe if blocked cause running issues??

cheers

[Dan_GTi8v]

whats the issue, idle and stalling? have you cleaned the throttle body?