Suzuki 2006 SX4, Руководство по обслуживанию

Страница: 96 / 1478

1A-52 Engine General Information and Diagnosis:
Surge – Engine power
variation under steady
throttle or cruise. Feels
like vehicle speeds up
and down with no change
in accelerator pedal Faulty spark plug (excess carbon
deposits, improper gap, burned
electrodes, etc.) “Spark Plug Inspection in Section 1H”
Variable fuel pressure “Fuel Pressure Check”
Kinky or damaged fuel hose and lines “Fuel Pressure Check”
Faulty fuel pump (clogged fuel filter) “Fuel Pump and Its Circuit Check”
Poor performance of MAF sensor “Mass Air Flow (MAF) and Intake Air
Temperature (IAT) Sensor Inspection in
Section 1C”
Faulty fuel injector “Fuel Injector Circuit Check”
Faulty ECM “Inspection of ECM and Its Circuits”
Faulty electric throttle body assembly “Electric Throttle Body Assembly On-Vehicle
Inspection in Section 1C”
Faulty APP sensor assembly “Accelerator Pedal Position (APP) Sensor
Assembly Inspection in Section 1C”
Excessive detonation –
Engine makes
continuously sharp
metallic knocks that
change with throttle
opening. Sounds like pop
corn popping Faulty spark plug “Spark Plug Inspection in Section 1H”
Engine overheating Condition “Engine overheating”
Clogged fuel filter (faulty fuel pump) or
fuel lines “Fuel Pressure Check” or “Fuel Pump and Its
Circuit Check”
Air drawn in through intake manifold or
throttle body gasket Check air intake system.
Poor performance of knock sensor, ECT
sensor or MAF sensor “DTC P0327 / P0328: Knock Sensor Circuit
Low / High”, “Engine Coolant Temperature
(ECT) Sensor Inspection in Section 1C” or
“Mass Air Flow (MAF) and Intake Air
Temperature (IAT) Sensor Inspection in
Section 1C”
Faulty fuel injector(s) “Fuel Injector Circuit Check”
Faulty ECM “Inspection of ECM and Its Circuits”
Excessive combustion chamber
deposits “Cylinder Head Inspection in Section 1D” and
“Pistons, Piston Rings, Connecting Rods and
Cylinders Inspection and Cleaning in Section
1D”
Fuel pressure out of specification
– Dirty fuel filter
– Dirty or clogged fuel hose or pipe
– Faulty fuel pressure regulator
– Faulty fuel pump Refer to “Fuel Pressure Check”.
Condition Possible cause Correction / Reference Item