Ford Corsar Repair Manual page 207

TROUBLE DIAGNOSES
DIAGNOSTIC PROCEDURE 4 (Cont'd)
Holds Less than 280 kPa
Pressure
1
B u t / , more than
-Or-
320 kPa
1
1
Fuel pressure less than 280 kPa.
1 1
Fuel pressure more than 320 kPa.
1
Make close ins~ection of fuel
I I
Disconnect fuel return line hose from
lines between h e l tank and
fuel rail for restrictions.
This includes:
-
Tank flexible hoses to vehicle
I
steel lines.
I
I
-
Steel lines under vehicle.
1
-
Flexible hoses between steel
lines and filter andlor fuel rail.
I
Not Ok
Repair, then
recheck
All Ok
Replace fuel
filter, then
"Return" fuel pipe next to fuel rail.
Attach a piece of fuel hose to the "Return"
fuel pipe. Insert other end of hose into an
ao~roved aasoline container.
.
.
Apply +l2 volts to fuel pump (Bridge Relay)
and note fuel pressure.
Pressure still Pressure now
more than 320 kPa. 280-320 kPa.
Locate and correct
restricted fuel
regulator. return line to tank.
Pressure now 280-320 kPa
Less than 280 kPa.
and does not continue
dropping when pump stops.
I
Return to
step on
previous
page.
I
I
Ignition "off".
l
Pinch shut the fuel return hose connecting to the "Return"
fuel pipe behind fuel rail.
I
Apply +l2 volts to fuel pump (Bridge Relay) and note fuel pressure.
I
Replace pressure regulator
and recheck pressure. If still
low, replace in-tank fuel
strainer.
Replace fuel pump
and return to
step on previous
page.