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  1. GA Architect

    Weird Sound 1973 FJ40

    You don't need tee into the PCV line. Either put some type of small air cleaner on it, or tie it into the air cleaner. For a '73, the PCV line ties into the carb base insulator.
  2. GA Architect

    Weird Sound 1973 FJ40

    Here's an option. The high pitch sound you were hearing may have been a vacuum leak. I don't believe the valve cover is to be under that much negative pressure, per se.
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