fuel leak at o ring on fuel pressure regulator where it goes in fuel rail on 2005 pontiac sunfire 2.2 .i replaced fuel rail and fuel pressure regulator it worked for about 40 miles started leaking ag
i replaced regulator and fuel rail it lasted about 40 miles leak again so i replaced o ring it did same thing .i notice the fuel line is hot?
did you put any white grease on the O-ring before installing it? helps it seat better. as far as the heat as the engine gets hot so will the line .
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