20v Vacuum lines

[johntramp]

Hey should I be blocking this vacuum line here (blue) or is there something else I should do with it?

And what do I do with the breather at the back of the cam (red)?

Cheers

[20v_rollaboy]

Not 100% sure but I think the red one needs a breather on it and the red one might go back into the plenum. There should be a pipe on the bottom of it (plenum)

This is just going by my silver top, not sure if they the same

[AceSniper]

with out going and looking at mine... I think... the blocked off one is a vacume line for the brake booster, and the head breather just run it into a oil catch along with the pcv hose (block other vacume side of pcv)

[*84vvt*]

Blue pipe is part of the idle
control goes to the ICS valve??
red is a breather long pipe runs down
to the in take cover

[johntramp]

I am running the brake booster off the 2 vaccum lines at the front of the motor so is it ok to leave that other vacuum as it is?

Also I am not going to be using the intake cover so I should just run the other breather into a catch can?

Cheers

[AceSniper]

sure there are two vacumes at the front? coz there is one that dosnt do anything (the one you should be blocking) and then a brake booster at each end of the manafold.
an yea do what ever with the cover breather

[sergei]

On black top the vacuum booster lines are on the front of the engine (but they are still collected from #1 and #4), make sure you have 2 check valves before joining them together. The blue line is for power steering idle up valve (usually located on the steering rack) or it could be AC idle up (either way it connected to same place, and in your case it does not matter as hoses don't line up anyway), there should be a second outlet like that (90 degree horizontally relative to the blue circle), one of which is for AC idle up solenoid and other is for PS valve...
The outlet circled in red should be either connect to catch can, returned to intake or have breather on..

[johntramp]

There is also another vaccum line off the back somewhere which I have blocked (which then dropped the idle to where it should be), and if I block the other one aswell (BLUE) then the engine stalls, so I guess I will just leave that Blue one open.

What do you mean by having "2 check valves" ? At the moment I have it just like this;



Is there anything wrong with that??

Cheers

[sergei]

it might mess with map sensor reading, just find another one of those white valves and place both before T connector... It is really strange that when you are blocking lines the car stalls, do you still have small resonator inline before map sensor?