Suzuki Liana RH418 Supplementary Service Manual page 44

1A-31 Engine General Information and Diagnosis:
Condition
Excessive engine oil
consumption – Oil
entering combustion
chamber
Engine hesitates –
Momentary lack of
response as accelerator
is depressed. Can occur
at all vehicle speeds.
Usually most severe when
first trying to make
vehicle move, as from a
stop sign.
Possible cause
Sticky piston ring
Worn piston and cylinder
Worn piston ring groove and ring
Improper location of piston ring gap
Worn or damaged valve stem seal
Worn valve stem
Spark plug faulty or plug gap out of
adjustment
Leaky high-tension cord
Fuel pressure out of specification
TP sensor, ECT sensor or MAP sensor "Throttle Position (TP) Sensor On-Vehicle
Fuel injector
Faulty ECM
Inoperative thermostat
Poor water pump performance
Clogged or leaky radiator
Improper engine oil grade
Clogged oil filter or oil strainer
Poor oil pump performance
Faulty radiator fan control system
Dragging brakes
Slipping clutch
Blown cylinder head gasket
Low engine compression
Camshaft position control system out of
order
Correction / Reference Item
"Cylinders, Pistons and Piston Rings
Inspection in Section 1D"
"Cylinders, Pistons and Piston Rings
Inspection in Section 1D"
"Cylinders, Pistons and Piston Rings
Inspection in Section 1D"
"Pistons, Piston Rings, Connecting Rods and
Cylinders Disassembly and Assembly in
Section 1D"
Replace.
"Valves and Valve Guides Inspection in
Section 1D"
"Spark Plug Inspection in Section 1H in related
manual"
"High-Tension Cord Inspection in Section 1H in
related manual"
"Fuel Pressure Check"
Inspection in Section 1C in related manual",
"Engine Coolant Temperature (ECT) Sensor
Inspection in Section 1C in related manual" or
"Manifold Absolute Pressure (MAP) Sensor
Inspection in Section 1C in related manual"
"Fuel Injector Inspection in Section 1G"
"Thermostat Inspection in Section 1F in related
manual"
"Water Pump Inspection in Section 1F in
related manual"
"Radiator On-Vehicle Inspection and Cleaning
in Section 1F in related manual"
"Engine Oil and Filter Change in Section 0B in
related manual"
"Engine Oil and Filter Change in Section 0B in
related manual" or "Oil Pan and Oil Pump
Strainer Cleaning in Section 1E in related
manual"
"Oil Pressure Check in Section 1E in related
manual"
"Radiator Fan Control System Check"
Condition "Dragging brakes" in "Brakes
Symptom Diagnosis in Section 4A in related
manual".
Condition "Slipping clutch" in "Clutch System
Symptom Diagnosis in Section 5C in related
manual".
Replace.
"Compression Check in Section 1D"
"Oil Control Valve Inspection in Section 1C"