Chery T21 2014 Service Manual page 442

07 - SQR484F ENGINE MECHANICAL
Inspection
1. Check coolant (See page
2. Check engine oil
3. Check battery (See page
4. Check air filter.
a. Remove the air filter element.
b. Visually check that there is no dirt, blockage or damage in the air filter element.
HINT:
 If there is any dirt or blockage in the air filter element, clean it with compressed air.
 If any dirt or blockage remains even after cleaning the air filter element with compressed air, replace it.
5. Check spark plugs
6. Test cylinder compression pressure.
 Cylinder pressure is the main index to judge engine operation and also can be used to judge definitely
whether some system of engine operates well or not. Therefore, it is necessary to perform the
07 measurement of cylinder pressure when servicing the engine.
 Ensure that battery is fully charged and the engine starter is in good operating condition. Otherwise the
indicated compression pressure used for diagnosis may be invalid.
CAUTION
 Recommended compression pressure is only used as a guide for diagnosing engine malfunction.
 Never determine causes of low pressure by disassembling engine unless there are some malfunctions.
Measurement Procedures
CAUTION
 Select cylinder pressure gauge with accurate reading and reset it to zero. Otherwise it will affect
accuracy of reading.
a. Turn off all the electrical equipment and ignition switch.
b. Remove the engine trim cover assembly
c. Move away the high-voltage cables for each cylinder.
 Remove the clamp (arrow) from crankcase
ventilation hose, and disconnect the connection
between crankcase ventilation hose and cylinder
head cover.
 Move away the crankcase ventilation hose.
 Loosen the high-voltage cables (1) in order, pull
them upward from spark plug holes, and move
them to one side.
CAUTION
 Be careful not to damage high-voltage cables when pulling them upward.
20
07–
12-12).
(See page 13-9).
16-7).
(See page 14-12).
(See page 10-10).
Chery Automobile Co., Ltd.
1
RT21140110