4.29
Fuel Systems
4
Fuel Rail Bleeding / Pressure Testing
All CFI engine fuel return hoses feature an inline Schrader valve
that can be used to bleed the fuel system pressure and observe
running system pressure using a fuel pressure gauge.
The model year and engine model will determine which fuel
pressure tool adaptor is required to complete both tasks.
1. Select the appropriate adaptor.
2. Connect the adaptor to the fuel return hose Schrader valve.
3. Connect the adaptor to the fuel pressure / bleed tool gauge.
4. To observe running fuel system pressure, start the engine
and compare reading to the specification.
5. To bleed the fuel system pressure after the engine is
stopped, place the tool’s bleed hose into an appropriate fuel-
handling container. Open the valve to release the pressure
and residual fuel.
6. Close the valve, then remove the gauge and adaptor from
the fuel hose Schrader valve. Replace the Schrader valve
dust cap.
Disconnect Fittings
The fuel hoses on CFI engines feature disconnect fittings that
require special tools to remove.
The fuel line disconnect tool kit, PS-47152, supplies one 5/16
″
and one 3/8″ quick disconnect tool. These tools are also
commercially available at local auto parts stores.
1. To disconnect a fuel hose from the fuel pump, or fuel rail,
insert the tapered end of either the 5/16
″ or 3/8″ tool into
the female housing.
2. Firmly press the tool into the housing while carefully
pulling the male hose outwards.
3. Reconnect the fuel hoses by coating each hose end with a
light film of two stroke engine oil.
4. Carefully install the male end of the hose into the center of
the female housing. Firmly push the hoses together until the
male nozzle fully seats behind the spring tabs.
5. Grasp both hoses and gently pull to verify positive
engagement.
Pressure Bleed / Testing Tools
YEAR / MODEL
PRESSURE /
B
LEED TOOL
ADAPTOR
2007 600 CFI
Shallow Core
Deep Core
PV-43506-A
None
PS-48617
2007 700 CFI None
2008 ALL CFI PS-48762
= In. / mm.
600 / 700 / 800 CFI Fuel System Pressure
58 PSI (4 bar)
SCHRADER VALVE
SCHRADER VALVE
PV-43506-A
PS-47152
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