i noticed that so, i am asking where should i hock up the testing gauge?If your asking where the Schrader valve is, the vehicle doesn't have one.
i tried to test it through engine pay but, the adapter was not fit it , so i went to fuel pump method and it works fine and easy than engine pay for meIt would be less work to detach the fuel line in the engine bay than at the pump, so that would be my choice.
Care to describe the problem your vehicle is having?