Fuel Evaporation System: Maintenance

1985 Chevrolet Forward Control 6.2 J, StandardSECTION Maintenance

No adjustments are required with this system. Check system and replace air inlet filter (if equipped) in bottom of charcoal canister, every 30,000 miles. Regular inspection of system components should be made and defective components replaced as necessary.

Fig 1: Vacuum Hose Routing for Single-Canister Evaporative Control System Canister must be lowest point in system.
G8747
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:

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