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Thread: Hard starting once warm

  1. #1

    Hard starting once warm

    Hi guys - I have a 2.4T carb model, wondering what some good places to start with this issue might be:

    It starts from cold every time; catches and fires right up. Once fully warmed up, if you turn it off, again it starts right back up. However, if you let it sit say 10 minutes from warm, it is hard to start. It might be float level causing some flooding when warm? But it doesn't smell like it is flooding, and I took a plug out and it wasn't too dark....

    thoughts?

    thanks

  2. #2
    After it's hot take the air cleaner off, then at about 10 minutes with a flashlight and mirror look down the throats, see if any gas is siphoning from the discharge nozzles.
    Early S Registry member #90
    R Gruppe member #138
    Fort Worth Tx.

  3. #3
    Maybe vapor lock. My MFI motor does the same thing but it is (I think) because the thermo-time switch is still heat-soaked and says the engine is warm but in reality the intake and other stuff is cool enough to need the cold-start squirters.
    1971 911S, 2.7RS spec MFI engine, suspension mods, lightened
    Early 911S Registry Member #425

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