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canister

  1. PCV or something else?

    Engine
    Could someone please identify this strange canister connected to my carburetor in the top right of the attached picture? (on a 1978 GMC 350). It looks like a pcv valve but is not connected to the crank case. Does not do anything when blocked off.
  2. Vented Gas Cap?

    General Rodding Tech
    I have striped down some old smog componants in a recent rebuild including a vac canister that had hoses comming in from the gas tank. What should I do with the hoses and will a vented gas cap work for the lack of Vac to tank.
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