Geely EC718 2009 Workshop Manual page 125

Engine
Symptoms
Pinging, Knocking
Fault Definition: The knocking
sound increases during
acceleration. With the throttle
opening changes, the engine
will produce a sharp metal
knocking sound.
Suspected Fault Items
12. Crankshaft Position Sensor
13. Excessive Engine Oil in Combustion
Chamber or Valve Seals Leakage
14. Cylinder Compression Pressure
Incorrect
15. Valve Stagnant, Valve Spring
Broken, Valve Timing Incorrect
16. Excessive Carbon Residue in
Combustion Chamber
17. Intelligent Variable Valve Timing
System
18. Exhaust Not Smooth: Three-way
Catalytic Converter Plug, Muffler Internal
Damage
1. ECM Power Supply Circuit
2. Wrong Fuel Used
3. Fuel Pressure Abnormal
4. Injector Working Abnormal
5. The Air-Fuel Mixture Too Lean
6. Knock Sensor (KS) System Ignition
Advance Too Great
7. Spark Plug Thermal Value Incorrect
8. Engine Cooling System: Engine
coolant level is too low. The engine
coolant is not the correct type. The
engine coolant leaks. The cooling fan is
not running.
9. Excessive Engine Oil in Combustion
Chamber and Valve Seal Leakage
10. Cylinder Compression Pressure Too
High
11. Excessive Carbon Residue in
Combustion Chamber
12. Camshaft, Cylinder Head, Piston,
Connecting Rod and Bearing Abnormal
Control System JL4G18-D
Relevant Sections
This section2.2.7.29 DTC P0321
"Engine Mechanical System" in
Information and Procedures.
"Engine Exhaust System" in
Information and Procedures.
This section2.2.7.37 DTC P0560 P0562
"Fuel System" in the2.3.7 Diagnostic Information and
Procedures.
This section2.2.7.21 DTC P0130 P0131 P0132 P0133
P0134 P2195 P2196.
"Ignition System" in the2.10.7 Diagnostic Information
and Procedures.
"Engine Cooling System" in
Information and Procedures.
"Engine Mechanical System" in
Information and Procedures.
EC718/EC718RV EC715/EC715RV 10/2009
2-43
P0322.
the2.6.7 Diagnostic
the2.7.5 Diagnostic
P0563.
the2.8.7 Diagnostic
the2.6.7 Diagnostic