Fuel Delivery System; Fuel Pressure Inspection - Suzuki GRAND VITARA XL-7 Owner's Manual

ENGINE AND EMISSION CONTROL SYSTEM (SEQUENTIAL MULTIPORT FUEL INJECTION FOR H27 ENGINE) 6E2-23

Fuel Delivery System

Fuel pressure inspection

1) Relieve fuel pressure in fuel feed line referring to "FUEL
PRESSURE RELIEF PROCEDURE" in Section 6-1.
2) Disconnect fuel feed hose from (3) delivery fuel feed pipe (1).
CAUTION:
A small amount of fuel may be released when fuel feed
hose is removed. Place container under the fuel feed
hose or fuel feed pipe with a shop cloth so that released
fuel is caught in container or absorbed in cloth. Place
that cloth in an approved container.
3) Connect special tools and hose (2) between fuel feed hose
and fuel feed pipe as shown in figure, and clamp hose
securely to ensure no leaks occur during checking.
Special tool
(A) : 09912-58441
(B) : 09912-58431
(C) : 09912-58490
4) Check that battery voltage is above 11 V.
5) Turn ignition switch ON to operate fuel pump and after 3 sec-
onds turn it OFF. Repeat this 3 or 4 times and then check
fuel pressure.
6) Start engine.
7) Measure fuel pressure at idling.
If measure pressure doesn't satisfy specification, refer to
"Diagnostic Flow Table B-3" in Section 6-1 and check each
possibly defective part. Replace if found defective.
Fuel pressure specification:
CONDITION
With fuel pump operating and
engine stopped
At specified idle speed
With 1 min. after engine (fuel pump)
stop (Pressure reduces as time
passes)
FUEL PRESSURE
270 – 310 kPa
2
2.7 – 3.1 kg/cm
38.4 – 44.0 psi
210 – 260 kPa
2
2.1 – 2.6 kg/cm
29.8 – 37.0 psi
over 200 kPa
2
2.0 kg cm
28.4 psi