Geely EC718 2009 Workshop Manual page 299

Engine
1. Disconnect the battery negative cable. Refer to
2.11.8.1 Battery
2. Remove VVT solenoid valve. Refer to
Solenoid Valve Replacement and Filter
3. Clean the VVT solenoid valve hole, return hole, the
chamber.
Note
During the cleaning process, keep the VVT solenoid
valve and wiring harness connector upright,
otherwise the cleaning agent will easily enter the
VVT solenoid valve and cause internal damage.
FE02-5139b
4. Use an air gun to clean the VVT valve hole and oil
chamber. Clean up the cleaning agent residue.
FE02-5140b
5. Switch on and off the VVT solenoid valve. Clean the valve
with an air gun and repeat 2-3 times.
Note
Each time switch the valve on no longer than the 2
s, otherwise the VVT solenoid valve may be
damaged.
FE02-5141b
Control System JL4G18-D
Disconnection.
EC718/EC718RV EC715/EC715RV 10/2009
2-217
2.2.8.4 VVT
Cleaning.