Suzuki Liana RH413, Service Manual

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1A-35 Engine General Information and Diagnosis:
Poor gasoline mileage Leaks or loose connection of high-
tension cord “High-Tension Cord Inspection in Section 1H”
Faulty spark plug (improper gap, heavy
deposits and burned electrodes, etc.) “Spark Plug Inspection in Section 1H”
Malfunctioning EGR valve (if equipped) “EGR System Inspection (Using SUZUKI Scan
Tool) in Section 1B”
Faulty ignition coil with ignitor “Ignition Coil Assembly (Including Igniter)
Inspection in Section 1H”
Fuel pressure out of specification “Fuel Pressure Check”
Leaky manifold, throttle body, or cylinder
head gasket
Faulty idle air control system
“Idle Air Control System Check”
Faulty evaporative emission control
system “EVAP Canister Purge Valve Inspection in
Section 1B”
Faulty fuel injector(s) “Fuel Injector Circuit Check”
Poor performance of ECT sensor, TP
sensor or MAP sensor “Engine Coolant Temperature (ECT) Sensor
Inspection in Section 1C”, “Throttle Position
(TP) Sensor On-Vehicle Inspection in Section
1C” or “Manifold Absolute Pressure (MAP)
Sensor Inspection in Section 1C”
Faulty ECM
Loose connection or disconnection of
vacuum hoses
Malfunctioning PCV valve
“PCV Valve Inspection in Section 1B”
Inoperative thermostat “Thermostat Inspection in Section 1F”
Poor water pump performance “Water Pump Inspection in Section 1F”
Clogged or leaky radiator “Radiator On-Vehicle Inspection and Cleaning
in Section 1F”
Improper engine oil grade “Engine Oil and Filter Change in Section 0B”
Clogged oil filter or oil strainer “Oil Pressure Check in Section 1E”
Poor oil pump performance “Oil Pressure Check in Section 1E”
Faulty radiator fan control system “Radiator Fan Control System Check”
Dragging brakes Condition “Dragging brakes” in “Brakes
Symptom Diagnosis in Section 4A”.
Slipping clutch Condition “Slipping clutch” in “Clutch System
Symptom Diagnosis in Section 5C”.
Blown cylinder head gasket Replace.
Low compression “Compression Check in Section 1D”
Faulty fuel injector(s) “Fuel Injector Circuit Check”
Poor valve seating “Valves and Valve Guides Inspection in
Section 1D”
Improper tire pressure Adjust.
Excessive engine oil
consumption – Oil
leakage Blown cylinder head gasket Replace.
Leaky camshaft oil seals Replace.
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”
Condition Possible cause Correction / Reference Item