Volume Test: Mechanical

1985 Chevrolet Nova Base, StandardSECTION Mechanical
  1. Ensure there is gasoline in the tank. Disconnect ignition wire from distributor.
  2. Disconnect fuel line at carburetor inlet fitting. Install length of fuel resistant hose over end of fuel line. Place end of hose into a gasoline container.
  3. Crank engine. Compare amount of fuel pumped to specifications for each manufacturer. Pump output should be about 1 pint in 30 seconds.
  4. If little or no gasoline flows from hose, check fuel lines or gas tank filter for kinks, restrictions or leaks. If lines and filter are clear, pump is defective and must be replaced.
Fig 1: Typical Electric Fuel Pump Installation In Fuel Tank
G5427
RENDER: 1.0x

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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.