Fuel Tank: Cleaning

2004 Oldsmobile Bravada AWDSECTION Cleaning
WARNING: This page is about a different car, the 2003 GMC Safari and 2003 Chevrolet Astro. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION: When flushing the fuel tank, handle the fuel and water mixture as a hazardous material. Handle the fuel and water mixture in accordance with all applicable local, state and federal laws and regulations. Only use oil free compressed air to blow out the fuel pipes.

Flush the fuel tank with hot water. Pour the water out of the fuel sender assembly opening. Rock the fuel tank to be sure that the removal of water from tank is complete. Inspect the in-line fuel filter for contamination. Replace the fuel filter if the filter is plugged. See FUEL FILTER  . Clean the fuel pipes by applying air pressure in the opposite direction of the fuel flow.

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.