1982 Subaru GLF Automatic TransFACTORY OEM SERVICE PROCEDURE

System Test

  1. With filler cap removed, disconnect evaporative hose between carbon canister and fuel tank. Blow air toward carbon canister. No resistance should be felt. Blow air toward fuel tank. Slight resistance should be felt because of the 2-way valve.
  2. Disconnect vacuum hose from pipe going to carbon canister vacuum vent port. Blow air into hose. If air can be blown into canister, the diaphragm in purge control valve is ruptured and canister must be replaced.
  3. Blow air into all other pot's on the carbon canister. If air does not pass easily through all other hoses, replace canister.
    Fig 1: Subaru Carbon Canister
    G09315561Courtesy of SUBARU OF AMERICA, INC.
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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.