Check the fuel system lines and hoses for damage, leaks, and deterioration. Replace any damaged parts.

Check all clamps, and make sure they are properly positioned and tightened.

System Initialization
The navigation system must be initialized if
power to the navigation system is
interrupted for any reason (e.g., the
battery was disconnected). ...
Regulator Valve Body Disassembly, Inspection, and Reassembly (A/T)
Clean all parts thoroughly in solvent, and dry them with compressed air.
Blow out all passages except the air check valve filter.
Inspect the regulator valve body for scoring and ...
A/T Secondary Shaft Sealing Ring Replacement (A/T)
The sealing rings are synthetic resin with chamfered ends. Check the
condition of the sealing rings, and replace them only if they are worn,
distorted, or damaged.
For a better fit, squeeze ...