Fuel System Priming Pump - Operate
Priming the fuel system fills the fuel filter. Priming the fuel system removes air bubbles from the fuel system. Prime the fuel system under the following conditions:
- Fuel system that is run dry
- Storage
- Fuel filter maintenance
- Disconnecting fuel lines and installing fuel lines
- Repair of leaks in the fuel lines
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Fuel leaked or spilled onto hot surfaces or electrical components can cause a fire. To help prevent possible injury, turn the start switch off when changing fuel filters or water separator elements. Clean up fuel spills immediately. |
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Use a suitable container to catch any fuel that might spill. Clean up any spilled fuel immediately. |
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| Illustration 1 | g00359072 |
- Unlatch the engine hood and raise the engine hood.
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Do not allow dirt to enter the fuel system. Thoroughly clean the area around a fuel system component that will be disconnected. Fit a suitable cover over disconnected fuel system component. |
- When the engine is cold, operate the priming lever for 2 minutes or operate the priming lever until resistance is felt.
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| Illustration 2 | g00286060 |
- Loosen two of the fuel line nuts at two of the fuel injection nozzles in order to open two vents.
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| Illustration 3 | g00286062 |
- Crank the engine until the flow of fuel from the vents is continuous and free of air bubbles. Tighten the fuel line nuts.
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Do not crank the engine continuously for more than 30 seconds. Allow the starting motor to cool for two minutes before cranking the engine again. |
- Ensure that all fuel line connections are secure and tightened to the proper torque. Ensure that any spilled fuel is cleaned up.
- Start the engine. The engine may run rough. Run the engine at low idle until the engine runs well. If the engine will not start, further priming may be necessary. If the engine starts and if the engine continues to misfire or smoke, one or more of the following conditions may be present:
- The fuel system requires more priming.
- There may be an air leak in the fuel system.
- The fuel system requires more priming.
- Close the engine hood and latch the engine hood.
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