Ford Transit 2002 Owner's Manual page 1340

A2: CHECK WHERE AIR IS ENTERING THE SYSTEM
A3: CHECK THE FUEL LEVEL SENSOR FOR AIR INGRESS
observe the clear plastic pipe for signs of air
ingress.
Are any signs of air present in the clear plastic pipe?
Yes
GO to A2. .
No
REMOVE the clear plastic pipe and connect the fuel
injection pump to fuel filter fuel return line. For
additional diagnostics for Fuel Charging and
Controls REFER to Section
and Controls / 303-04B Fuel Charging and
Controls / 303-04C Fuel Charging and Controls -
Turbocharger / 303-04D Fuel Charging and
Controls.
Using suitable clean engine oil, apply the oil to
1
each of the fuel supply line and fuel return line
connections, unions and joints in turn and observe
the clear plastic pipe for visible signs of air after
each oil application.
Did the amount of air in the clear plastic pipe decrease
when any of the connectors, unions or joints were
oiled?
Yes
INSTALL a new fuel pipe(s) as necessary. Test the
system for normal operation.
No
REMOVE the clear plastic pipe from between the
fuel injection pump and the fuel injection pump to
fuel filter fuel return
Drain the fuel tank.
1
REFER to Fuel Tank Draining
Fill the fuel tank with 10 liters of diesel.
2
Disconnect the fuel tank to fuel filter fuel supply
3
line from the fuel filter.
Using a suitable piece of clear plastic pipe,
4
manufacture and install a pipe between the fuel
filter and the fuel tank to fuel filter supply line.
Using the special tool, prime the fuel pump until
5
clean air-free fuel is seen entering the vacuum
pump reservoir.
Remove the special tool and connect the fuel
6
injection pump to fuel filter fuel return line.
http://vnx.su
303-04A Fuel Charging
line.GO to A3. .
in this section.