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Home >> Chevrolet >> 2008 >> Optra5 LS, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls And Fuel - 2.0L (Diesel) >> Repair Instructions >> Fuel System Cleaning >> Cleaning Fuel From the Fuel System

Cleaning Fuel From the Fuel System

  1. Drain the fuel tank.
  2. Fill the fuel tank to 1/4 full.
  3. Unplug the crankshaft position (CKP) sensor.
  4. Loosen the fuel filter drain and connect the filter to a hose that flows into a metal container.
  5. Operate the fuel system hand primer at the fuel filter until clean fuel flows from the fuel filter drain into the metal container.
  6. Hand tighten the fuel filter drain and disconnect the hose.
  7. Install a hose on the fuel return line near the glow plug relay, and insert the other end into a 7.6 liters (2 gallon) metal container.
  8. Crank the engine for 15 second time intervals, with 1 minute cool-down periods. Continue until 3.8 liters (1 gallon) of fuel has passed into the container.
  9. Reconnect the fuel return line.
  10. Plug in the CKP sensor.
  11. Attempt to start and run the engine for 15 minutes. If the engine does not start, operate the hand primer for 30 strokes, or until firm.
  12. Stop the engine.
  13. Clean any fuel spillage from the engine.
  14. Clear the engine of any diagnostic trouble codes (DTCs).
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