Priming pump

A priming pump, comprising:

• a housing including a mounting structure for mounting the housing to a fuel filter assembly;
• an inlet passageway inside of the housing;
• an outlet passageway inside of the housing;
• a divider, inside of the housing, separating the inlet passageway and the outlet passageway;
• a connecting passageway in fluid communication with the inlet passageway and the outlet passageway;
• a rotary pump, inside of the housing, having an inlet in fluid communication with the inlet passageway and an outlet in fluid communication with the outlet passageway,
• wherein the connecting passageway is configured to permit fluid to bypass the rotary pump;
• and
• a shaft connected to the rotary pump and extending through the housing.

A fuel system, comprising:

• a fuel filter assembly;
• and
• a priming pump, comprising:
• a housing including at least one aperture configured for mounting the housing to the fuel filter assembly;
• an inlet passageway inside of the housing;
• an outlet passageway inside of the housing;
• a divider, inside of the housing, separating the inlet passageway and the outlet passageway;
• a connecting passageway in fluid communication with the inlet passageway and the outlet passageway;
• a rotary pump, inside of the housing, having an inlet in fluid communication with the inlet passageway and an outlet in fluid communication with the outlet passageway,
• wherein the connecting passageway is configured to permit fluid to bypass the rotary pump;
• and
• a shaft connected to the rotary pump and extending through the housing.