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This tube going to the rear fuel rail on a 2001 3.4 engine. Its the curved tube, where it enters the fuel rail, is loose. I can wiggle it. That nut at end of fuel rail is tight. If loosened the nut as far as the curved section allowed me to. I want to remove this tube from the fuel rail to inspect O rings? why loose? worry about fuel leaking when started. are any special tools needed to do this?
 

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