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Thread: 1973 911T cold start fuel leak

  1. 01-02-2022, 05:25 PM #1
    simonadot
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    1973 911T cold start fuel leak

    Hi everyone,
    need some help. mt car leaks fuel on the cold start on he left side of the engine bay , around 1-2 drops a second for about a minute until the car is warm.
    when car warms up , it stops. or maybe the fuel evaporates and I cant see it any more ....
    do you know what the cause may be , is it safe to drive ??
    thanks,
    Simon
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  2. 01-02-2022, 05:28 PM #2
    HarryD
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    You need to find the source. You are risking a fire.

    CIS or MFI Car?

    Check the fittings on the fuel system for leaks. If not obvious, A simple way to find them is to put a bit of flour on the lines and see where it is wet.
    Harry

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    1970 VW Sunroof Kombi Bus - "The Magic Bus"
    1973.5 911T Targa for fun - "Smokey"
    2009 MB C300
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  3. 01-02-2022, 06:22 PM #3
    simonadot
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    Hi harry ,
    i believe it is a mfi car thank you for your reply.
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  4. 01-02-2022, 06:26 PM #4
    simonadot
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    also , i had the fuel lines checked on the car before i bought it last week, and I was told they were all new and good. i just dont know why there is a leak and why does it stop when the car warms up.
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  5. 01-02-2022, 06:42 PM #5
    gled49
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    MFI fuel pumps will leak when cold then stop when they warm up. Pump is located just ahead of left rear tire. Confirm leak location.
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  6. 01-02-2022, 07:07 PM #6
    Scott A
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    I think the most important thing to say here is: IT is NOT safe to drive.

    Current long term ownership: 63 Cab, 71 911, 74 914
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  7. 01-02-2022, 08:10 PM #7
    simonadot
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    yes that is the exact location. do you think the car needs a new fuel pump, I don't believe that would be would be normal.
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