Detroit Diesel Troubleshooting Diagrams

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Series 60 Aerated Fuel

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To determine if aerated fuel is causing excessive white smoke, perform the following steps: ‪

  1. Disconnect the fuel line return hose from the fitting located at the fuel tank; refer to OEM guidelines.
  2. Place the open end of the fuel line into a suitable container.
  3. Start and run the engine.
  4. Operate the engine at 1000 r/min.
  5. Visually check to see if air bubbles are rising to the surface of the fuel within the container.
    1. If air bubbles are present, shut down engine;
    2. If air bubbles are not present, shut down engine, check for improper injector calibration setting;

Aerated Fuel Resolution

Perform the following to resolve aerated fuel: ‪

  1. Tighten all fuel line connections between fuel tank and fuel pump; refer to OEM guidelines.
  2. Visually inspect all fuel lines between fuel tank and fuel pump for leaks.
  3. Repair damaged components as required; refer to OEM guidelines.
  4. Verify aerated fuel resolution;
Test the Engine with Aerated Fuel Resolution

Perform the following to determine if aerated fuel resolution resolved excessive white smoke condition: ‪

  1. Start and run the engine.
  2. Run the engine at idle with a no-load for approximately 5 minutes, allowing the engine coolant to reach normal operating range.
  3. Visually inspect exhaust for excessive white smoke.
    1. If the engine exhaust emission appears normal, no further troubleshooting is required. Shut down the engine.
    2. If the engine exhaust emission is excessively white, shut down the engine. Check for improper injector calibration setting;

Written by sam

May 8th, 2012 at 5:19 am

Posted in Excessive White Smoke

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Series 60 Aerated Fuel

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To determine if aerated fuel is causing starting difficulty, perform the following steps: ‪

  1. Disconnect the fuel line return hose from the fitting located at the fuel tank; refer to OEM guidelines.
  2. Place the opened end of the fuel line into a suitable container.
  3. Start the engine.
  4. Run the engine at 1000 r/min.
  5. Visually check to see if air bubbles are rising to the surface of the fuel within the container.
    1. If air bubbles are present, repair is necessary.
    2. If air bubbles are not present, check for a restrictive air filter. Shut down the engine.

Aerated Fuel Resolution

Perform the following steps for aerated fuel resolution: ‪

  1. Shut down engine.
  2. Tighten all fuel line connections between fuel tank and fuel pump; refer to OEM guidelines.
  3. Visually inspect all fuel lines between fuel tank and fuel pump for leaks.
  4. Replace damaged components as required; refer to OEM guidelines.
  5. Verify aerated fuel resolution.
Test Engine with Aerated Fuel Resolution

Perform the following steps to determine if aerated fuel resolution resolved starting difficulty: ‪

Attempt to start and run the engine.

  • If the engine starts and runs, no further troubleshooting is required. Shut down the engine.
  • If the engine fails to start and run, check for a restrictive air filter;

Written by sam

November 23rd, 2011 at 3:29 am

Posted in Starting Difficulty

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Series 60 Aerated Fuel Misfiring Cylinder

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To determine if aerated fuel is causing the cylinder to misfire, perform the following steps: ‪

  1. Disconnect the fuel line return hose from the fitting located at the fuel tank.
  2. Place the opened end of fuel line into a suitable container.
  3. Start the engine.
  4. Run the engine at 1000 r/min.
  5. Visually check to see if air bubbles are rising to the surface of the fuel within the container.
    1. If air bubbles are present.
    2. If air bubbles are not present, check for improper calibration setting; Shut down the engine.

Aerated Fuel Repair

Perform the following steps for air in fuel repair: ‪

  1. Shut down engine.
  2. Tighten all fuel line connections between fuel tank and fuel pump; refer to OEM guidelines.
  3. Visually inspect all fuel lines between fuel tank and fuel pump for leaks.
  4. Replace any damaged components;
  5. Verify repair of fuel lines:
    1. If no air in the fuel return,
    2. If air in the ruel return, locate and repair.
Test the Engine with Repair for Aerated Fuel

Perform the following steps to determine if the aerated fuel repair resolved the misfiring cylinder condition: ‪

  1. Start engine.
  2. Run engine at 1000 r/min.
  3. Listen for misfiring cylinder.
    1. If the engine is not misfiring, no further troubleshooting is required. Shut down the engine.
    2. If the engine is misfiring, check for improper injector setting. Shut down the engine;

Written by sam

October 26th, 2011 at 5:39 am

Posted in Misfiring Cylinder

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