348 Intake compensation soleniod valve | FerrariChat
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348 Intake compensation soleniod valve

Discussion in '348/355' started by ceraldesign, Feb 7, 2007.

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  1. ceraldesign

    ceraldesign Rookie

    Oct 28, 2006
    40
    #1 ceraldesign, Feb 7, 2007
    I have a 1992 348, I removed all the smog equipment. I cannot get the compensation diaphram to work. The tubing is connected from the diaphram to a tee, one side goes to the small vacum tank and then to the soleniod valve located (5-8), the other side goes to the opposite soleniod valve(1-4) do I still need the soleniod (1-4). The soleniod on (5-8) has 3 inlets 1 goes to the vacum can 2 used to go to the exhaust manifold (I blocked that one)and the 3 I don't know what to do with it. I just want the Intake compensation to work can someone help.
     
  2. plugzit

    plugzit F1 Veteran
    Silver Subscribed

    Dec 1, 2004
    7,779
    Redondo Beach, CA
    Full Name:
    Bruce Bogart
    #2 plugzit, Feb 7, 2007
    Go to www.the348.com and you should find there a diagram for the vacuum routing and wiring. Shouldn't be too big a problem to find. Good luck!
     
  3. ernie

    ernie Two Time F1 World Champ
    Lifetime Rossa Owner

    Nov 19, 2001
    22,614
    The Brickyard
    Full Name:
    The Bad Guy
    #3 ernie, Feb 8, 2007
    Well so long as you still have the tube going to the control diaphram, under the plenum, connected to the solenoid, you should be okay. Keep in mind that the compensation valve doesn't open until you are at about 3,200/rpm, if I remember correctly, and only stays open until 5,200/rpm. Also make sure that all of the vacume tube coming off the back of the plenum is to the vacume can, located on the left side of the subframe under the air box.

    You can see a picture of the vacume tube routing here. http://eurospares.co.uk/partTable.asp?M=1&Mo=434&A=1&B=23645&S=

    One more thing, make sure the electrical connection for the solenoid is plugged in.
     
  4. ceraldesign

    ceraldesign Rookie

    Oct 28, 2006
    40
    #4 ceraldesign, Feb 9, 2007
    Thank you very much this is what I needed
     
  5. ernie

    ernie Two Time F1 World Champ
    Lifetime Rossa Owner

    Nov 19, 2001
    22,614
    The Brickyard
    Full Name:
    The Bad Guy
    #5 ernie, Feb 9, 2007
    Glad I could help.
     

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