Journey FWD V6-3.5L (2009)
Fuel Pressure: Testing and Inspection
Fuel Pressure Leak Down
FUEL PRESSURE LEAK DOWN
For a complete wiring diagram, Refer to the Wiring Information See: Diagrams/Electrical Diagrams.
WARNING: Follow these safety precautions to reduce the risk of fire and serious possible serious or fatal injury when performing this test
procedure.
-
Fuel or fuel vapors are highly flammable. A fire could occur if an ignition source is present. Do not expose the fuel or the test
equipment used in this procedure to open flames or sparks.
-
Inhalation of fuel vapors could lead to disorientation and personal injury. Keep the service area well ventilated, or perform
this test procedure in an area where there is a building exhaust removal system.
-
Relieve fuel system pressure before servicing fuel system components.
-
Use extreme caution when connecting and disconnecting fuel lines.
-
Considerable fuel leakage may occur when servicing the fuel system. Wear protective eye wear and clothing to protect from
fuel splash, and take suitable fuel containment measures.
-
Wrap a shop towel around the fuel pressure gauge connection to absorb fuel leakage that occurs when connecting the test
equipment. Place the towel in an approved container when complete.
-
Never store fuel in an open container due to the possibility of fire or explosion. Have a dry chemical (Class B) fire extinguisher
nearby.
1. CHECK FUEL DELIVERY SYSTEM FOR LEAKS AND DAMAGE
WARNING: The fuel system is under a constant pressure (even with the engine off). Before testing or servicing any fuel system hose, fitting, or
line, the fuel system pressure must be released. Failure to follow these instructions can result in possible serious or fatal injury.
1. Visually and physically inspect the fuel delivery system for external leaks and damage.
Is the system leaking or damaged?
Yes
-
Repair / replace as necessary.
-
Perform the PCM VERIFICATION TEST. See: Powertrain Management/Computers and Control Systems/Testing and Inspection/Diagnostic
Trouble Code Tests and Associated Procedures/Verification Tests/PCM Verification Test.
No
-
Go To 2
2. INSTALL APPROPRIATE FUEL LINE ADAPTERS / FITTING FROM GAS AND DIESEL FUEL PRESSURE/DECAY TESTER 8978A
1. Turn the ignition off.
