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Thread: Broken hose on the upper intake boot?

  1. #1
    Join Date
    Jul 2018
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    Campbell, CA
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    Broken hose on the upper intake boot?

    So while trying to replace my lower intake boot I noticed that the smaller line off the F connecter from the upper intake boot had some really brittle rubberized foam on it. While trying to pop out the F connecter that line came apart and I can figure out what this part is.
    I'm not sure what the line is for but from what I've read it's some sort of fuel vent? Until I figure what to do I'm going to heat strink this thing so I can keep driving until I find a more permanent solution.
    Anyone know what this thing is and where to get something to fix it?

    Thanks

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    2004 BMW 330i ZHP Auto - 96k Miles - Silver-gray - Black Leather
    Dinan CAI + Stage 2 - Dinan Strut tower - Cross Drilled brakes
    Orion V4 angel eyes - DEPO clear lights - Eonon GA9150A - Alcantara Coby Wheel

  2. #2
    Join Date
    Nov 2016
    Location
    Charlotte, NC
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    2,487
    It's a vacuum line for the fuel filter. Not sure how important it is, but I replaced it with this when I changed my fuel filter:

    https://www.fcpeuro.com/products/3-5...itech-n0203535

  3. #3
    Join Date
    Jul 2018
    Location
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    Quote Originally Posted by ZHPizza View Post
    It's a vacuum line for the fuel filter. Not sure how important it is, but I replaced it with this when I changed my fuel filter:

    https://www.fcpeuro.com/products/3-5...itech-n0203535
    That's it. By the looks of it only the rubber connection is the issue, is there something for that specifically? I'm going to try drive it and see if there are any issues but from what I've read this hose isn't under much pressure and doesnt seem massively important.
    If there are arent any issues I might just wait until I replace the fuel filter, in the next ~10k miles to thoroughly fix it.

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    2004 BMW 330i ZHP Auto - 96k Miles - Silver-gray - Black Leather
    Dinan CAI + Stage 2 - Dinan Strut tower - Cross Drilled brakes
    Orion V4 angel eyes - DEPO clear lights - Eonon GA9150A - Alcantara Coby Wheel

  4. #4
    Join Date
    Feb 2011
    Location
    Lexington, KY
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    3,948
    I did the same thing and broke mine like 6 years ago. I rigged it with a piece of tygon tubing. It's been fine every since.
    CDV delete, KONI STR-T & KYB Excel-G, Weisslichts, Stewart H2O pump....
    http://s900.photobucket.com/user/othibau/media/Junesig.jpg.html][IMG]http://i900.photobucket.com/albums/ac208/othibau/Junesig.jpg

  5. #5
    Join Date
    Sep 2018
    Location
    Austin, Tx
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    109
    They deteriorate all the time, very common. It is an emissions item, if the diaphragm for the fuel pressure regulator fails and leaks fuel, the leaked fuel enters the vacuum hose and gets drawn into the engine as opposed to leaking to atmosphere.
    '09 HP2S, '12GSA, '00 332iT (S54 Swapped), '00 323iT, '03 325iT, '04 ZHP IR/6MT Sedan

  6. #6
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    Jul 2018
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    Quote Originally Posted by GeorgeH View Post
    They deteriorate all the time, very common. It is an emissions item, if the diaphragm for the fuel pressure regulator fails and leaks fuel, the leaked fuel enters the vacuum hose and gets drawn into the engine as opposed to leaking to atmosphere.
    Hmm. I feel like I would rather it go into the atmosphere, but I'm guessing the EPA wouldn't like that

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    2004 BMW 330i ZHP Auto - 96k Miles - Silver-gray - Black Leather
    Dinan CAI + Stage 2 - Dinan Strut tower - Cross Drilled brakes
    Orion V4 angel eyes - DEPO clear lights - Eonon GA9150A - Alcantara Coby Wheel

  7. #7
    Join Date
    Sep 2018
    Location
    Austin, Tx
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    Quote Originally Posted by ComradeNick View Post
    Hmm. I feel like I would rather it go into the atmosphere, but I'm guessing the EPA wouldn't like that

    Sent from my SM-G973U using Tapatalk
    Lol! Personally I'd rather not have fuel dripping from the car right next to the exhaust, but I hear ya

    I've never seen a M54 car leak, but the M52TUs in the E36 saw this a couple of times. It ended up causing rich mixture faults illuminating the CEL. Took awhile to figure it. And I think I saw it one other time where the intake was pulled apart and found fuel in the hose without any other symptoms.
    '09 HP2S, '12GSA, '00 332iT (S54 Swapped), '00 323iT, '03 325iT, '04 ZHP IR/6MT Sedan

  8. #8
    Snowboarding in Lake Tahoe in a green jacket, Comrade?

  9. #9
    Join Date
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    Quote Originally Posted by RamTheJam View Post
    Snowboarding in Lake Tahoe in a green jacket, Comrade?
    Are you talking about my pfp? Yeah that's Tahoe, pic is several years old. Also I ski

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    2004 BMW 330i ZHP Auto - 96k Miles - Silver-gray - Black Leather
    Dinan CAI + Stage 2 - Dinan Strut tower - Cross Drilled brakes
    Orion V4 angel eyes - DEPO clear lights - Eonon GA9150A - Alcantara Coby Wheel

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