MARUTI SUZUKI Wagon R, Manual

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Engine General Information and Diagnosis: Bi-Fuel LPG model 1A-44
Improper engine idling or
engine fails to idle Faulty spark plug “Spark Plug Inspection”: in Section
Faulty ignition coil with ignitor “Ignition Coil Assembly Inspection”: in Section
Petrol and/or LPG fuel pressure out of
specification “Fuel Pressure Basic Check”: LPG in Section
1G
Leaky manifold, throttle body, or cylinder
head gasket Check air intake system.
Faulty evaporative emission control
system “EVAP Canister Purge System Inspection”: in
Section 1B
Faulty petrol fuel injector(s) and/or LPG
fuel injector(s) “Fuel Injector Circuit Check”: in Section
Poor performance of ECT sensor or
MAP sensor “ECT Sensor Inspection”: in Section or “MAP
Sensor Inspection”: in Section
Faulty throttle body assembly “Throttle Body On-Vehicle Inspection”: in
Section
Faulty ECM “Inspection of ECM and Its Circuit”: Bi-Fuel
LPG model
Faulty LPG control module “Inspection of LPG Control Module and Its
Circuit”: Bi-Fuel LPG model
Loose connection or disconnection of
vacuum hoses Check connection or disconnection of vacuum
hoses.
Malfunctioning PCV valve “PCV Valve Inspection”: in Section 1B
Engine overheating Condition “Engine overheating”
Low compression “Compression Check”: in Section
Faulty generator and/or its circuit “Generator Test”: in Section
Excessive hydrocarbon
(HC) or carbon monoxide
(CO) emission Faulty spark plug “Spark Plug Inspection”: in Section
Faulty ignition coil with ignitor “Ignition Coil Assembly Inspection”: in Section
Low compression “Compression Check”: in Section
Lead contamination of three way
catalytic converter Check for absence of filler neck restrictor.
Faulty evaporative emission control
system “EVAP Canister Purge System Inspection”: in
Section 1B
Petrol and/or LPG fuel pressure out of
specification “Fuel Pressure Basic Check”: LPG in Section
1G
Faulty throttle body assembly “Throttle Body On-Vehicle Inspection”: in
Section
Faulty petrol fuel injector(s) and/or LPG
fuel injector(s) “Fuel Injector Circuit Check”: in Section
Faulty ECM “Inspection of ECM and Its Circuit”: Bi-Fuel
LPG model
Faulty LPG control module “Inspection of LPG Control Module and Its
Circuit”: Bi-Fuel LPG model
Engine not at normal operating
temperature Warm up engine to normal operating
temperature.
Clogged air cleaner “Air Cleaner Filter Inspection and Cleaning”: in
Section
Vacuum leak “Engine Vacuum Check”: in Section 1D
Excessive nitrogen
oxides (NOx) emission Improper ignition timing “Ignition Timing Inspection”: in Section
Lead contamination of catalytic
converter Check for absence of filler neck restrictor.
Petrol and/or LPG fuel pressure out of
specification “Fuel Pressure Basic Check”: LPG in Section
1G
Faulty throttle body assembly “Throttle Body On-Vehicle Inspection”: in
Section
Faulty petrol fuel injector(s) and/or LPG
fuel injector(s) “Fuel Injector Circuit Check”: in Section
Faulty ECM “Inspection of ECM and Its Circuit”: Bi-Fuel
LPG model
Faulty LPG control module “Inspection of LPG Control Module and Its
Circuit”: Bi-Fuel LPG model
Condition
Possible cause Correction / Reference Item