Diverter Valve Question

Discussion in 'Volkswagen Related' started by blackbullet, Oct 2, 2017.

  1. blackbullet

    blackbullet Well-Known Member

    So this is probably an easy question to answer, but on my mk4 1.8t, should the vacuum line on top of the DV suck the piston up when not on the gas, then when on the gas should the piston close? Don't think mine is because when I hit the gas I hear a surge of air. It stops once I let off. I don't have a CAI btw, just the stock air box.

  2. blackbullet

    blackbullet Well-Known Member

    Well I answered my own question. Turns out when I took off my intake manifold to replace all the rotted breather hoses, I broke a vacuum line clean off. Never noticed. Just replace the line, and my diverter valve works like a charm.
  3. lorge1989

    lorge1989 Posting- God

    What kind of diverter? Sounds like you have a piston type, need to keep that lubricated every so often.
  4. blackbullet

    blackbullet Well-Known Member

    I got a forge 007 DV from a buddy of mine that used to have a 1.8t. I just replaced the vacuum lines for that and t'ed in my fuel pressure regulator. Car idles much better. It used to have a stutter around 3500 rpms when I would hard gas it in 1st. That's gone too. Thumbs up to that.

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