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To replace the fuel pressure regulator on a 2003 Lincoln Navigator, first relieve the fuel system pressure by removing the fuel pump fuse and starting the engine until it stalls. Next, disconnect the battery and remove the fuel lines connected to the regulator, taking care to catch any fuel that may spill. Unbolt the old regulator from the fuel rail, then install the new regulator by reversing the removal process, ensuring all connections are secure and the fuel lines are properly reattached. Finally, reconnect the battery, reinstall the fuel pump fuse, and start the engine to check for leaks.

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2mo ago

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