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Identify my cannister

Discussion in 'The Garage' started by crazyhole812, Jul 7, 2006.

  1. crazyhole812

    crazyhole812 1/2 ton status

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    there is a cannister on the driver side on the core support. about 10-12 inches tall about 6 inch diameter. on top it has three ports, tank, air cleaner, and i don't remember the other one. what is this cannister?
     
  2. crazyhole812

    crazyhole812 1/2 ton status

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    my truck is an 87 it had tbi originally. carb now is the cannister trash?
     
  3. loafer

    loafer 1/2 ton status

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    It's the charcoal canister for the evaporative emissions control. It vents and collects fuel vapor from the fuel tank. On the TBI versions the canister is purged through a referenced vacuum port so when the RPM's get high enough it pulls a vacuum on the canister.

    It's a good idea to keep it even with the carb, as it is better to vent the fuel tank through this than to atmosphere and it will help prevent condensation in the tank. Just connect the purge line up to a referenced port on the carb and should work just fine.
     
  4. btolenti

    btolenti 1/2 ton status

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    one port to the TBI/carb, one port to the fuel tank vent, and the last port is a vent to the atmosphere.
     
  5. sled_dog

    sled_dog 1 ton status

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    my 84 Carb truck came with one, not hurting anything but the atmosphere to remove it...
     
  6. Desert Rat

    Desert Rat Fetch the comfy chair

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    Whatever you do, don't switch the fuel tank vent line with the fuel return line from the fuel pump. Don't ask me how I know.....:doah:
     

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