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Foreign substance adhering to the manifold

Discussion in '308/328' started by Sansho Kamogawa, Oct 20, 2025 at 5:21 AM.

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  1. Sansho Kamogawa

    Sansho Kamogawa Rookie

    Oct 12, 2025
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    Hideyuki Kishimoto
    #1 Sansho Kamogawa, Oct 20, 2025 at 5:21 AM
    The photo shows the intake manifold inlet of a 308 (carbureted version). There seems to be some reddish, crystal-like substance attached. Do you know what this might be?
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  2. Newman

    Newman F1 World Champ
    Consultant Owner Professional Ferrari Technician

    Dec 26, 2001
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    #2 Newman, Oct 20, 2025 at 6:06 AM
    The intake manifold gasket is letting coolant from the above passage enter the port. You're going to find plugged ports and transfer slots as well as lot of corrosion when you remove the manifold. And do both banks not just the one.
     
    Steve Magnusson likes this.
  3. Newman

    Newman F1 World Champ
    Consultant Owner Professional Ferrari Technician

    Dec 26, 2001
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    #3 Newman, Oct 20, 2025 at 6:08 AM
  4. Sansho Kamogawa

    Sansho Kamogawa Rookie

    Oct 12, 2025
    7
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    Hideyuki Kishimoto
    #4 Sansho Kamogawa, Oct 20, 2025 at 6:31 AM
    I totally agree with you.
     
  5. Dr Tommy Cosgrove

    Dr Tommy Cosgrove Three Time F1 World Champ
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    May 4, 2001
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    #5 Dr Tommy Cosgrove, Oct 20, 2025 at 7:23 AM
    Not that this is what this is but doesn't excessive octane booster additives leave a reddish "film" in places?
     
  6. Sansho Kamogawa

    Sansho Kamogawa Rookie

    Oct 12, 2025
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    Hideyuki Kishimoto
    #6 Sansho Kamogawa, Oct 20, 2025 at 8:19 AM
    Thank you , but I've never used additives.
     

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