Fuel system having a jet pump

A fuel system for supplying fuel to a fuel consuming device, said fuel system comprising:

• a fuel pump having a fuel pump inlet and a fuel pump outlet such that said fuel pump is configured to pump fuel from said fuel pump inlet to said fuel pump outlet;
• and
• a jet pump assembly comprising:
• a first fuel passage defined by a first tube, said first fuel passage having a first fuel passage inlet and a first fuel passage outlet;
• and
• a second fuel passage defined by a second tube and connected to said fuel pump outlet such that said second fuel passage is in fluid communication with, and configured to receive pressurized fuel from said fuel pump outlet, said second fuel passage having an exit orifice which extends through said second tube and is configured to discharge a first flow of fuel into said first fuel passage and create a venturi effect within said first fuel passage which draws a second flow of fuel into said first fuel passage through said first fuel passage inlet such that said first flow of fuel and said second flow of fuel combine in said first fuel passage and exit said first fuel passage through said first fuel passage outlet, said second fuel passage also having an initial orifice arranged upstream from, and in series with, said exit orifice such that said exit orifice and said initial orifice are separated by a chamber which is less restrictive than said exit orifice and which is also less restrictive than said initial orifice.