Suzuki Baleno Manual page 1338

6-1-108 ENGINE GENERAL INFORMATION AND DIAGNOSIS (G13/G16 ENGINE WITH WU TWC)
TABLE B-3 FUEL PRESSURE CHECK (Page 2 of 2)
STEP
7 Was no fuel pressure applied in Step 1?
8 With fuel pump operated and fuel return hose blocked by
pinching it, is fuel pressure applied?
9 1) Operate fuel pump.
2) With fuel return hose blocked by pinching it, check fuel
pressure.
Is it 450 kPa (4.5 kg/cm
10 1) Disconnect fuel return hose from pressure regulator
and connect new return hose to it.
2) Insert the other end of new return hose into approved
gasoline container.
3) Check again if specified pressure is obtained.
While doing so, does fuel come out of return hose?
Fig.1 for Step 1
1. Fuel delivery pipe
2. Fuel feed hose
3. Fuel return pipe
4. Fuel pressure gauge & 3 way joint
ACTION
2
, 63.9 psi) or more?
YES
Go to Step 8. Go to Step 9.
Faulty fuel Shortage of fuel or
pressure regulator. fuel pump or its
circuit malfunction
(refer to TABLE
B-2 FUEL PUMP
AND ITS CIRCUIT
CHECK).
Faulty fuel Clogged fuel filter,
pressure regulator. Restricted fuel
feed hose or pipe,
Faulty fuel pump
or Fuel leakage
from hose
connection in fuel
tank.
Faulty fuel Fuel leakage from
pressure regulator. injector, Fuel
leakage from
between injector
and delivery pipe,
Faulty fuel pump
(faulty check valve
in fuel pump) or
Fuel leakage from
fuel pressure
regulator
diaphragm.
NO