8 

Inspect the piston pin offset. Does it exceed the specified value?   

Standard value (0 . 6mm/0 . 0236in)

 

 

9 

Confirm that the fault is fixed. 

Yes 

Repair the fault part to confirm whether 
the fault is removed. 

No 

Yes 

Replace failed components, confirm 
whether the fault is fixed. 

No 

955

2.13.7.8 Engine Misfire with Abnormal Noise 

1 

Inspect whether engine control system has fault code through fault diagnostic unit? 

 

2 

Use fault diagnosis tester to inspect the engine "Knock" data, compared with the 
normal vehicle data. Is it normal? 

 

3 

Inspect valve spring and check whether it is too soft and broken? 

 

4 

Inspect valve whether there is catching and bending? 

 

5 

Inspect valve whether it is stretched, stagnant or worn. 

 

6 

Inspect whether there are excessive cam wear or obvious faults? 

 

7 

Inspect valve for the existence of cracks, excessive wear and tear and other faults? 

 

Yes 

Repair the faulty part. Refer to 2.6.8.15 Cylinder 
Hood Assembly Disassembly and Assembly 

No 

Yes 

Replace camshaft, Refer to“2 . 6 . 8 . 12 replace 
camshaft” . 

No 

Yes 

Repair the faulty part. Refer to 2.6.8.15 Cylinder 
Hood Assembly Disassembly and Assembly 

No 

Yes 

Repair the faulty part. Refer to 2.6.8.15 Cylinder 
Hood Assembly Disassembly and Assembly 

No 

Yes 

Repair the faulty part. Refer to 2.6.8.15 Cylinder 
Hood Assembly Disassembly and Assembly 

No 

Yes 

Inspect whether the fuel is normal. Inspect whether the 
timing system is normal. Repair the faulty part. Confirm 
whether the fault is fixed.

No 

Yes 

According to the DTC code, repair the faulty part. 
Refer to the2.2.7.11 DTC Code Index 

No 

956

8 

Inspect valve spring seating and the valve spring washer. Is the installation incorrect? 

 

9 

Confirm that the fault has been fixed. 

Yes 

Repair the faulty part. Refer to 2.6.8.15 Cylinder 
Hood Assembly Disassembly and Assembly 

Next 

957

2.13.7.9 Drive belt inspection

 

1.  Inspect when the engine is cool 

or has been turned off for 30 min.

2.  Visually inspect whether there is 

V-drive belt excessive wear or 
cord wear. If faults are found, 
replace the V-drive belt. 

3.  Visually inspect the interior and 

edge of the belt for damage, wear 
or cracking. If any, replace it 
with new belt. 

4.  Visually inspect whether there 

are situation 2 and 3 on belt, and 
measure belt tensioning 
force :Clockwise turning two 
rounds of the crankshaft belt 
pulley to evenly distribute the 
belt tension between each belt 
pulley. 

5.  Use the sound pressure meter (via 

the repair tools) to measure the 
tension and frequency of the belt 
at the marking point A. 

损坏老化的传动皮带

传动皮带安装

正确配合

A

FE02-7000b

 

 

New belt 

Old belt 

Belt tension (N/lb) 

400±-500/89.9±-112.4 300±-400/67.4±-89.9 

 

A.  Replace with new drive belt. Rotate the crankshaft two laps clockwise, so that the drive belt 

completely runs through the drive pulley. Measure the tension at marked position A. Refer to 
the table for the range and replace the drive belt if the measurement is beyond the scope of 
the table. 

B.  f the used drive belt (the old belt) has the tension beyond the scope of the table, replace it 

with a new drive belt. 

C.  During the drive belt installation, please make sure the correct installation to the drive pulley 

groove. 

D.  Do not drop engine oil or engine coolant onto the drive belt. 

E.  Do not over-wind or bend the drive belt. 

Damaged and aged drive belt

Drive belt installation

Correct matching

958