Suzuki Wagon R Plus RB310, Service Manual

Page: 475 / 846

6E2-22 ENGINE AND EMISSION CONTROL SYSTEM (M13 ENGINE)
Fuel Delivery System
Fuel pressure inspection
1) Relieve fuel pressure in fuel feed line referring to “Fuel Pres-
sure Relief Procedure” in Section 6-2.
2) Disconnect fuel feed hose from fuel delivery pipe.
3) Connect special tools and hose between fuel delivery pipe
and fuel feed hose (1) as shown in figure, and clamp hoses
securely to ensure no leaks occur during checking.
Special tool
(A): 09912-58442
(B): 09912-58432
(C): 09912-58490
4) Check that battery voltage is above 11 V.
5) Turn ignition switch ON to operate fuel pump and after 2 sec-
onds turn it OFF. Repeat this 3 or 4 times and then check
fuel pressure.
Fuel pressure specification
6) Start engine and warm it up to normal operating tempera-
ture.
7) Measure fuel pressure at idling.
If measured pressure does not satisfy specification, refer to
“Diagnostic Flow Table B-3” in Section 6-2 and check each
possibly defective part. Replace if found defective.
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.
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.
1
(C)
(B)
(A)
CONDITION FUEL PRESSURE
With fuel pump operating and
engine stopped 270 – 310 kPa
(2.7 – 3.1 kg/cm
2
,
38.4 – 44.0 psi)
At specified idle speed
With 1 min. after engine (fuel
pump) stop (Pressure
reduces as time passes)
over 250 kPa
(2.5 kg/cm
2
, 35.6 psi)