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Thread: MFI troubleshooting - high idle, pops and bucks at part throttle

  1. #131
    Serial old car rescuer Arne's Avatar
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    Quote Originally Posted by jt912 View Post
    WAIT! Your drove in the rain?
    Indeed. Like you, I live in Western Oregon. The car won't melt immediately, and it gets a nice warm, dry garage to air dry in.
    Last edited by Arne; 05-15-2019 at 05:17 PM.
    - Arne
    Current - 2018 718 Cayman, Rhodium Silver, PDK

    Sold - 1972 911T coupe, Silver Metallic; 1984 911 Carrera coupe, Chiffon white; 1973 914 2.0, Saturn Yellow; 1984 944, Silver Metallic

  2. #132
    What a great thread. Thank you! Very impressed by your persistence Arne and also by everyone’s contributions and expertise. Amazing.

  3. #133
    Senior Member 62S-R-S's Avatar
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    A major disturbance, but one hek of a nice casting..

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  4. #134
    Senior Member beh911's Avatar
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    Wrong diagram in question below.
    Glad you got it sorted out.

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    1969 S Coupe #761
    Early S Registry #1624

  5. #135
    And what is wrong about that diagram?
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  6. #136
    member #1515
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    Quote Originally Posted by edmayo View Post
    And what is wrong about that diagram?
    That the inlets are the opposite of the photo Mark sent.
    David

    '73 S Targa #0830 2.7 MFI rebuilt to RS specs

  7. #137
    Not if you follow the cast directional arrows on the housing.
    Early S Registry member #90
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  8. #138
    member #1515
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    Hi Ed,
    The illustration shows inlet from electrical pump at 9 o'clock
    the return line to tank at 6 o'clock
    the inlet from the MFI pump at 3 o'clock

    Mark shows inlet from electric pump at 3 o'clock
    inlet from MFI pump at 9 o'clock

    Which is correct?
    David

    '73 S Targa #0830 2.7 MFI rebuilt to RS specs

  9. #139
    Serial old car rescuer Arne's Avatar
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    Quote Originally Posted by edmayo View Post
    Not if you follow the cast directional arrows on the housing.
    The thing is, both the inlet from the fuel pump and the return from the injection pump have the exact same inbound arrows cast. But they are NOT interchangeable! When the console is mounted in the car, the one facing toward the front of the car is the fuel pump inlet, and the one facing the rear is the return from the MFI pump.
    - Arne
    Current - 2018 718 Cayman, Rhodium Silver, PDK

    Sold - 1972 911T coupe, Silver Metallic; 1984 911 Carrera coupe, Chiffon white; 1973 914 2.0, Saturn Yellow; 1984 944, Silver Metallic

  10. #140
    Exactly,,,,"when mounted in the car" which is of course how you would do it.
    Early S Registry member #90
    R Gruppe member #138
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