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Thread: Fuel Rail Removal

  1. #1
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    Fuel Rail Removal

    I need to remove the fuel rails in the next day or two so I can insulate them. With the rain we are finally getting I need to do this in my garage but i don't want to dump fuel all over the floor. Should I pull fuses 23, 24, and let engine run until fuel in rails is used up?

    Fuses 23 and 24 are identified as the fuel pump fuses but DME is also listed for each fuse.

  2. #2
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    I pull the plug at the fuel pumps and crank her up. You will still have some fuel spillage, but it’s very manageable.
    '93 850Ci - Mineralweiß Metallic

    2001 740iL - Titansilber
    ALPINA B7 -Alpinweiß III


    ...the price of cool ain't cheap!

  3. #3
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    Quote Originally Posted by TxGR8White View Post
    I pull the plug at the fuel pumps and crank her up. You will still have some fuel spillage, but it’s very manageable.
    Okay, thanks, Steffen!

  4. #4
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    Finally putting intake back together after wrapping the fuel rails with insulation. Hopefully, this insulation, engine head shield, new updated fan design, and air dam deflector will not cause prevent any power loss issues I have been experiencing for some time. Only occurs after driving an hour or two when things begin getting heat-soaked.

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    Last edited by JDP530; 09-14-2020 at 01:15 PM.

  5. #5
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  6. #6
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    Had a 1991 BMW 850
    What About the Fuel Line that runs under the Passenger Side Manifold?

    Neat Job looks good

  7. #7
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    Quote Originally Posted by rjjablo View Post
    What About the Fuel Line that runs under the Passenger Side Manifold?

    Neat Job looks good
    Thanks! I didn't think about that fuel line but I don't have the manifolds off either. I look at see if I can thread some insulating sleeve on there.

  8. #8
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    Next step alpina rep hood with opened vents?


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  9. #9
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    Quote Originally Posted by petejk View Post
    Next step alpina rep hood with opened vents?
    Sent from my iPhone using Tapatalk
    Yeah! If i could only find another hood I would vent it. There is a fiberglass hood available in the states but the guys said its not a good fit but it does have mold lines in it for venting. I think the hood is about $1500. http://fiberpartsconcepts.com/

  10. #10
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    Quote Originally Posted by rjjablo View Post
    What About the Fuel Line that runs under the Passenger Side Manifold?

    Neat Job looks good
    That's a return line. Not going to make a difference.
    '91 Dinan 860 Stage III (new 6L engine)
    '91 Dinan 850 TT stage III (brand new engine) 21st Century Tech meets 18th Century Dinan...
    '91 850i 6sp (mint) (sold)
    '90 Dinan 750iL TT stage III (Guido - The Beast)
    '94 850 CSi The Detroit Auto Show car (restored to factory perfect) (sold)
    '96 850Ci, The George Carlin car
    ''73 3.0 csi, '08 535i, '03 X5 4.6is
    ...and a few other non BMW cars

  11. #11
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    Quote Originally Posted by JDP530 View Post
    Yeah! If i could only find another hood I would vent it. There is a fiberglass hood available in the states but the guys said its not a good fit but it does have mold lines in it for venting. I think the hood is about $1500. http://fiberpartsconcepts.com/
    I’m going the Engl vents route, probably without the NACA duct. I just need to find someone decent locally to cut and weld them in.

    I’ve also read comments about the quality of these vents, but inspecting them up close the build quality seems pretty good.

    I can’t comment on the fiberglass hood


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  12. #12
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    Engl hood vents are really expensive, like, 600 euros. And, he has a naca duct that appears to be steel, for $100.

    http://www.engl-production.de/kiemenbleche.html

  13. #13
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    Quote Originally Posted by JDP530 View Post
    Engl hood vents are really expensive, like, 600 euros. And, he has a naca duct that appears to be steel, for $100.

    http://www.engl-production.de/kiemenbleche.html
    They aren’t cheap, but are cheaper in comparison to the fiberglass hood, which is $2000 when ordered with the vents opened up.


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  14. #14
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    JDP530, nice work!
    1993 850Ci.....18 years & 165,000 miles and counting!

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