Suzuki WagonR+ RB310 Service Manual page 2465

6-106 ENGINE DIAGNOSIS
TABLE B-3 FUEL PRESSURE CHECK
INSPECTION
STEP
1 Check Fuel Pressure (Refer to Section 6E for details).
1) Release fuel pressure from fuel feed line.
2) Install fuel pressure gauge.
3) Check fuel pressure by repeating ignition switch
ON and OFF. See Fig. 1.
Is fuel pressure within 270 – 310 kPa (2.7 – 3.1
2
kg/cm , 38.4 – 44.0 psi)?
2 Is 250 kPa (2.5 kg/cm
pressure retained for 1 minute after fuel pump is
stopped at Step 1?
3 Is there fuel leakage from fuel feed line hose, pipe or
their joint?
4 Was fuel pressure higher than spec. in Step 1?
ACTION
2
, 35.6 psi) or higher fuel
YES
Go to Step 2.
Normal fuel pressure.
Fuel leakage from
hose, pipe or joint.
Faulty fuel pressure
regulator.
1. Injector
2. Delivery pipe
3. Fuel pump
(A): Fuel pressure gauge
(B): Hose
(C): Attachment
NO
Go to Step 4.
Go to Step 3.
Faulty fuel pressure
regulator.
Clogged fuel filter,
faulty fuel pressure
regulator, Restricted
fuel feed hose or pipe,
Faulty fuel pump or
Fuel leakage from
hose connection in
fuel tank.