Suzuki Liana RH418, Supplementary Service Manual

Page: 44 / 371

1A-31 Engine General Information and Diagnosis:
Excessive engine oil
consumption – Oil
entering combustion
chamber Sticky piston ring “Cylinders, Pistons and Piston Rings
Inspection in Section 1D”
Worn piston and cylinder “Cylinders, Pistons and Piston Rings
Inspection in Section 1D”
Worn piston ring groove and ring “Cylinders, Pistons and Piston Rings
Inspection in Section 1D”
Improper location of piston ring gap “Pistons, Piston Rings, Connecting Rods and
Cylinders Disassembly and Assembly in
Section 1D”
Worn or damaged valve stem seal Replace.
Worn valve stem “Valves and Valve Guides Inspection in
Section 1D”
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. Spark plug faulty or plug gap out of
adjustment “Spark Plug Inspection in Section 1H in related
manual”
Leaky high-tension cord “High-Tension Cord Inspection in Section 1H in
related manual”
Fuel pressure out of specification “Fuel Pressure Check”
TP sensor, ECT sensor or MAP sensor “Throttle Position (TP) Sensor On-Vehicle
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 “Fuel Injector Inspection in Section 1G”
Faulty ECM
Inoperative thermostat
“Thermostat Inspection in Section 1F in related
manual”
Poor water pump performance “Water Pump Inspection in Section 1F in
related manual”
Clogged or leaky radiator “Radiator On-Vehicle Inspection and Cleaning
in Section 1F in related manual”
Improper engine oil grade “Engine Oil and Filter Change in Section 0B in
related manual”
Clogged oil filter or oil strainer “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”
Poor oil pump performance “Oil Pressure Check in Section 1E in related
manual”
Faulty radiator fan control system “Radiator Fan Control System Check”
Dragging brakes Condition “Dragging brakes” in “Brakes
Symptom Diagnosis in Section 4A in related
manual”.
Slipping clutch Condition “Slipping clutch” in “Clutch System
Symptom Diagnosis in Section 5C in related
manual”.
Blown cylinder head gasket Replace.
Low engine compression “Compression Check in Section 1D”
Camshaft position control system out of
order “Oil Control Valve Inspection in Section 1C”
Condition Possible cause Correction / Reference Item