VACUUM LEAK? | FerrariChat

VACUUM LEAK?

Discussion in '308/328' started by rcraig, Jul 6, 2006.

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  1. rcraig

    rcraig F1 Rookie

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    Bob Craig
    I am experiencing a noise on the mid to upper rev range on hard acceleration that sounds almost like a turbo and wondering if it may be a vacuum leak. Anyone experience this? Sounds like it's behind passenger side. - Thanks-Bob
     
    rcraig, Jul 6, 2006
    #1
  2. Birdman

    Birdman F1 Veteran

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    Sure it's not just intake roar? You have a carb car, right?
     
    Birdman, Jul 6, 2006
    #2
  3. ProCoach

    ProCoach F1 Veteran Owner

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    If it's a US car, it's probably the muffler.
     
    ProCoach, Jul 6, 2006
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  4. Perfusion

    Perfusion F1 Rookie

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    I've DEFINITELY got that on my '79....
     
    Perfusion, Jul 6, 2006
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  5. Birdman

    Birdman F1 Veteran

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    Carb cars have a great sucking sound when you stomp it. If you had a vacuum leak that was large enough to HEAR from the driver's seat, you would have such bad engine performance that you would be pulling hair out.

    Birdman
     
    Birdman, Jul 6, 2006
    #5
  6. rcraig

    rcraig F1 Rookie

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    Hey this is great news. It is a 79 carb car and After I went up one size on the mains it ran like a raped ape, but I started hearing this noise that was not familiar. You know how it is with these cars. Any new noise is suspicious. When I reinstalled my airbox it didn't seem to slip on as easily as it had and I worried that I had squished a vacuum hose and pulled it off. As I said the car is running great except for a slight stumble about 6500 that I am looking into now. I'll tell you something weird though. I almost feel stupid, but I don't really know what this car should feel like at top performance so it's hard to tune properly.

    Thanks for all the input and support. I don't think I could own this car without you guys to bounce my problems off of.-Bob
     
    rcraig, Jul 6, 2006
    #6

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