Geely CK Series 2007 Workshop Manual page 76

j. Poor intake and exhaust valve seal, failed piston ring, low compression pressure;
h. Too many carbon deposit in spark plug and combustion chamber;
k. Water temperature switch and thermostat fault;
l. Aging of Oxygon sensor;
Engine is difficult to start
Check whether the air cleaner is clogged
OK
Check the idle control valve
OK
Check the fuel pressure
OK
Check the vacuum pressure sensor
OK
Check the water temperature sensor and intake air temperature sensor
OK
Check the start switch signal
OK
Check the ignition timing
OK
Check the cylinder pressure
OK
Replace the ECU to retry
m. Incorrect ignition timing;
n. Check valve fault.
Clogged
Troubleshooting
NG
Repair or replace
Excessivly low
Service the electric fuel pump,
fuel filter and fuel pressure regulator
NG
Replace
No
Service the start signal wire
Misaligned
Adjust
NG
Disassemble the engine
Figure 149
NG
Replace
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