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    Throttle body duct vacuum hose

    I was working on my car tonight and removed the large duct that connects to the throttle body. When I did that a vacuum tube toward the bottom snapped. I searched realoem.com but could not locate the part as photographed. Does anyone know what this tube is for or part number?



    David'06 BMW X5 4.8is Sapphire Black/Black mfg 10/2005 58k
    '01 BMW 540i Sport Jet Black/Black mfg 11/2000 90k
    '00 Jeep Wrangler Sport White/Tan cloth 82k
    '06 BMW Z3 Rider Green/Tan Seat (daughters push car)

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    That line goes to the fuel pressure regulator (m)

    It's part of the fuel filter that is under the car.
    Line #13, the open end in the lower left hand corner of the link below is the line in you pic.

    http://www.realoem.com/bmw/showparts...11&hg=13&fg=10

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    Re: That line goes to the fuel pressure regulator (m)

    Would not having this hose connected cause a constant shaking when running?

    I started my car the first time tonight after reinstalling everything for the VCG and upper timing cover gasket replacement. The only thing I need is the "Throttle body duct vacuum hose.

    I had no lights/warning showing on the dash and do not have a way to check codes it may be throwing.

    Thanks,

    David'06 BMW X5 4.8is Sapphire Black/Black mfg 10/2005 58k
    '01 BMW 540i Sport Jet Black/Black mfg 11/2000 90k
    '00 Jeep Wrangler Sport White/Tan cloth 82k
    '06 BMW Z3 Rider Green/Tan Seat (daughters push car)

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    Not being connected shouldn't cause a shake (m)

    Being disconnected only allows a very small unmetered amount of air into the engine that the O2 sensors should be able to compensate for.
    This line that goes to the fuel pressure regulator only slightly adjusts the base pressure from idle to wide open throttle.
    Once I forgot to connect mine, after a few days of driving I saw it was loose. The car ran fine with no codes.
    Are you sure all of the connectors for all of the injectors are plugged in all the way? Although there should be a code if one isn't connected. Maybe a loose ground connection for the coils?

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    Re: Not being connected shouldn't cause a shake (m)

    I did have a hard time seating the box atop the fuel injectors on the passenger side but thought after the fourth time pressing down I heard them snap into place. I check that side again as well as the coil packs and grounding. For the ground straps I have the braided on the stud first and then the brown ground from the coil wire atop that. Sound right?

    After the powder coat guy had dipped the VCG's I do have rust on the coil studs. Could that be causing a bad ground?

    Thanks again too!

    David'06 BMW X5 4.8is Sapphire Black/Black mfg 10/2005 58k
    '01 BMW 540i Sport Jet Black/Black mfg 11/2000 90k
    '00 Jeep Wrangler Sport White/Tan cloth 82k
    '06 BMW Z3 Rider Green/Tan Seat (daughters push car)

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    As long as the brown wire and the braided wire (m)

    connectors are touching each other and the nut is tight that isn't your problem. Make sure the other end of the braided wire that connects to the head is tight.
    What are you going to do with the tools you bought when you did the gaskets on the front of the engine? I'd be interested in some of them if you want to sell them. Let me know.

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