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Thread: Holley 4150 Street HP 650 cfm rich at WOT.

  1. #11

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    Yes, that's a fresh built engine. It's a fresh built engine. I don't have another carburetor to try out, my engine is fresh built, good compression, that's sucks a new carb running like this.

  2. #12
    Join Date
    Jan 2010
    Location
    Brisbane, Australia
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    1,746

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    I'd pull the metering blocks off, and look for emulsion bleeds not drilled. I think there's no air bleed correction happening. I've never heard of this happening with any carburetor, so I think you need to contact Holley directly. Gary
    Last edited by Gaz64; 06-10-2020 at 08:30 PM.
    Regards, Gary

  3. #13

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    Thanks Gary, I'll check this today.

  4. #14

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    I sent a message to Holley tech hotline and I'm waiting for their response. Is it possible my air cleaner is too small? The diameter is 9.5 inches and the height 2 inches height.

  5. #15
    Join Date
    Jan 2010
    Location
    Brisbane, Australia
    Posts
    1,746

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    Depending on what the filter element media is made of, it could be too small.
    Drive the car without the air cleaner to verify. Gary
    Regards, Gary

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