Chery T21 2014 Service Manual page 266

06 - SQR484F ENGINE MANAGEMENT SYSTEM
5
Check compression of misfiring cylinder
a. Measure the compression of misfiring cylinder
Check engine to confirm cause of low
NG
compression
Check injectors, valve clearance, intake system and fuel pressure, etc. of misfiring cylinder
6
Check spark of misfiring cylinder with a normally functioning spark plug
06
a. Replace the spark plug with a normally functioning one.
b. Perform spark test.
 Connect ignition coil connector.
 Connect spark plug and ignition coil, and ground spark plug housing.
 Start and run the engine for no more than 2 seconds, and check if spark is generated.
Replace spark plug
OK
7
Check ignition coil
a. Check resistance of primary winding of ignition coil.
Multimeter
Connection
Terminal 1 -
Terminal 3
Terminal 2 -
Terminal 3
b. Check resistance of secondary winding of ignition coil.
Multimeter
Connection
Post 1 - Post 4
Post 2 - Post 3
Replace ignition coil
NG
102
06–
Condition Specification (Ω)
Normal
0.50 - 0.64
temperature
Normal
0.50 - 0.64
temperature
Specification
Condition
(kΩ)
Normal
9.5 - 12.1
temperature
Normal
9.5 - 12.1
temperature
(See page 07-20).
+ -
2
3
Chery Automobile Co., Ltd.
OK
NG
1 2 3 4
RT21140070
4
1
RT21140080