Mariner 4WD L4-2.5L (2010)
Fuel Pressure: Testing and Inspection
Fuel System Pressure Test
WARNING: Do not smoke, carry lighted tobacco or have an open flame of any type when working on or near any fuel-related component.
Highly flammable mixtures are always present and may be ignited. Failure to follow these instructions may result in serious personal injury.
WARNING: Do not carry personal electronic devices such as cell phones, pagers or audio equipment of any type when working on or near any
fuel-related component. Highly flammable mixtures are always present and may be ignited. Failure to follow these instructions may result in
serious personal injury.
WARNING: Before working on or disconnecting any of the fuel tubes or fuel system components, relieve the fuel system pressure to prevent
accidental spraying of fuel. Fuel in the fuel system remains under high pressure, even when the engine is not running. Failure to follow this
instruction may result in serious personal injury.
WARNING: Always disconnect the battery ground cable at the battery when working on an evaporative emission (EVAP) system or
fuel-related component. Highly flammable mixtures are always present and may be ignited. Failure to follow these instructions may result in
serious personal injury.
WARNING: When handling fuel, always observe fuel handling precautions and be prepared in the event of fuel spillage. Spilled fuel may be
ignited by hot vehicle components or other ignition sources. Failure to follow these instructions may result in serious personal injury.
All vehicles
1. Release the fuel system pressure. For additional information, refer to Fuel System Pressure Release See: Fuel Filter/Fuel Pressure Release/Service
and Repair.
2. Disconnect the battery ground cable. For additional information, refer to Battery.
Vehicles with 2.5L engine
3. Disconnect the fuel jumper tube-to-fuel rail quick connect coupling. For additional information, refer to Quick Connect Coupling See: Powertrain
Management/Fuel Delivery and Air Induction/Fuel Line Coupler/Service and Repair/Quick Connect Coupling.
4. Install the Fuel Pressure Test Kit between the fuel jumper tube and the fuel rail.
Vehicles with 3.0L engine
5. Disconnect the fuel jumper tube-to-fuel tube quick connect coupling. For additional information, refer to Quick Connect Coupling See:
Powertrain Management/Fuel Delivery and Air Induction/Fuel Line Coupler/Service and Repair/Quick Connect Coupling.
6. Install the Fuel Pressure Test Kit between the fuel jumper tube and the fuel tube.
