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  • Vacuum Lines

    One of the main questions raised, and is hard to go by the diagram in the workshop manual is the Vac lines.
    I have written down how i ended up with mine with lots of hours worth of testing. Now these may still not be 100% correct but worked for me. One thing to remember before atempting any change on your engine is remember/take a pic or label things that you are going to change so that you can allways put it back how it was if it doesn't work!

    I hope this makes sense... The things in *stars* are located on the attached pic.

    Solenoid with the Grey plug. (AIV Control Solenoid) *AVIS*
    Single Line off the back of the solenoid goes to a Y connector. *Y1*
    Front Inner most line goes to the Vacuum Canister. *VC*
    Front Outer most line goes to the *AIV* (on the side of the block with metal pipe going into the exhaust).

    Solenoid with Black plug which uses loom plug with blue wires. (Power Valve Control Solenoid) *PVCS*
    Rear line goes to Y connector *Y4*. (yes i know i missed Y3, thats later).
    Front Inner line, has a check valve *CV* and goes to the Power Valve Actuator. *PVA*
    Front Outer line goes to Y connector *Y5*

    Solenoid with the other black plug (this is the one facing the other way) and uses the loom plug with the grey wires. (EGR Control Solenoid) *EGRS*
    Rear line goes straight up to the Throttle Body Nipple *TB*.
    Front Inner line goes to a Y connector *Y6*.
    Front Outer line goes goes to Y connector *Y4*.

    *Y1* Goes upto the Intake Duct.
    *Y2* Has a line from the BPTV and EGRV, the other joining onto *Y6*
    *Y3* Has a line going to the Fuel Rail *FPR* and the Manifold *MV*.
    *Y4* Has a line going to Y1.
    *Y5* One line goes to Vacuum Tank *VT* with a check valve inline, another line to *Y3*.
    *Y6* Has a line going to the top of the Carbon Canister and to another Y connector *Y2*.


    For more info, or if you'd like something specific please PM or Email me!


    EDIT: Just a note... on my sisters car i've been playing arround with the vac lines and found a setting that gave me great torque and perfect top end transition. Aswell as (i'm pretty sure) giving me better fuel econ.
    "Solenoid with the Grey plug.
    Single Line off the back of the solenoid goes to a Y connector. *Y1*
    Front Inner most line goes to the AIV (on the side of the block with metal pipe going into the exhaust).
    Front Outer most line goes to another Y connector *Y2*."

    Swapped these two to be like this.
    Front Outer most line goes to the AIV (on the side of the block with metal pipe going into the exhaust).
    Front Inner most line goes to another Y connector *Y2*

    Also something you might find confusing.

    When i reffer to "Front Inner and Front Outer" I mean, when looking at the Solenoids... the Back of the solenoid has a nipple comming straight off it. Then the FRONT of the solenoid has two nipples comming out of it on a right angle. Inner means the one closer to the BACK of the solenoid. And Outer mean the one closest to the FRONT.

    Two solenoids have the FRONTS pointing to the back of the engine bay. One has the FRONT pointing to the front of the engine bay.

    I hope that helps you all out!

    KN13 CA16 Vac Lines.jpg
    This article was originally published in forum thread: All N13 EXA "How To's" started by DEVILsEXA View original post
    Comments 1 Comment
    1. PLZ818's Avatar
      thanks for this i need it now lol <3