System Testing

1985 Subaru GL 4D Sedan, 1.8 5, StandardSECTION System Testing
CAUTION: Do not inhale fuel vapor when blowing into fuel evaporation hoses. Fuel vapors can be a health hazard.

With filler cap removed, disconnect vent hose between carbon canister and fuel tank. Blow air toward canister and check that air flows freely into canister. Blow air toward fuel tank and check that air flows into tank with a slight resistance caused by the 2-way valve.

RENDER: 1.0x

NO RELATED

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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.