Suzuki Wagon R Manual page 586

CONDITION FUEL PRESSURE
With fuel pump
operating and
engine stopped
At specified
idle speed
With 1 min. after
engine (fuel pump)
stop (Pressure re-
duces as time passes)
FUEL DELIVERY SYSTEM
FUEL PRESSURE INSPECTION
WARNING:
Be sure to perform work in a well-ventilated area and away
from any open flames, or there is a risk of a fire breaking out.
1) Relieve fuel pressure in fuel feed line referring to "Fuel Pressure
2) Disconnect fuel feed hose from fuel delivery pipe.
3) Connect special tools and hose between fuel delivery pipe and
4) Check that battery voltage is above 11 V.
5) Turn ignition switch ON to operate fuel pump and after 2 seconds
270 – 310 kPa
6) Start engine and warm it up to normal operating temperature.
2
2.7 – 3.1 kg / cm
7) Measure fuel pressure at idling.
38.4 – 44.0 psi
over 250 kPa
2
2.5 kg / cm
35.6 psi
8) After checking fuel pressure, remove fuel pressure gauge.
ENGINE AND EMISSION CONTROL SYSTEM 6E-19
Relief Procedure" in Section 6.
CAUTION:
A small amount of fuel may be released when fuel hose
is disconnected. Place container under the joint with a
shop cloth so that released fuel is caught in container or
absorbed in cloth. Place that cloth in an approved con-
tainer.
fuel feed hose as shown in figure, and clamp hoses securely to
ensure no leaks occur during checking.
Special Tool
(A): 09912-58441
(B): 09912-58431
(C): 09912-58490
turn it OFF. Repeat this 3 or 4 times and then check fuel pres-
sure.
If measured pressure doesn't satisfy specification, refer to
"Diagnostic Flow Table B-3" in "Engine Diagnosis" section and
check each possibly defective part. Replace if found defective.
CAUTION:
As fuel feed line is still under high fuel pressure, make
sure to release fuel pressure according to following pro-
cedures.
D Place fuel container under joint.
D Cover joint with rag and loosen joint nut slowly to re-
lease fuel pressure gradually.