Daewoo Nubira User Manual page 413

Step
1 Is there a heavy knock when the engine is hot and
torque is applied?
2 Inspect the balancer and the pulley hub.
Is the balancer or the pulley hub broken?
3 Replace the broken balancer or the pulley hub.
Is the repair complete?
4 Inspect the torque converter bolts.
Are the bolts tightened to specified value?
5 Tighten the torque converter bolts.
Is the repair complete?
6 Inspect the accessory belts.
Are the belts too tight or nicked?
7 Replace and/or tension the belts to specifications as
necessary.
Is the repair complete?
8 Inspect the exhaust system.
Is the system grounded?
9 Reposition the system as necessary.
Is the repair complete?
10 Inspect the flywheel.
Is the flywheel cracked?
11 Replace the flywheel.
Is the repair complete?
12 Inspect the main bearing clearance.
Is the clearance more than the specified value?
13 Replace the main bearings as necessary.
Is the repair complete?
14 Inspect the rod bearing clearance.
Is the clearance more than the specified value?
15 Replace the rod bearings as necessary.
Is the repair complete?
DAEWOO V–121 BL4
Heavy Knock Hot with Torque Applied
Action
GENERAL ENGINE INFORMATION 1A – 5
Value(s)
Go to Step 2
Go to Step 3
Go to Step 1
45NSm(33 lb– Go to Step 5
ft)
Go to Step 1
Go to Step 7
Go to Step 1
Go to Step 9
Go to Step 1
Go to Step 11
Go to Step 1
2.0 DOHC Go to Step 13
0.015–0.040
mm
(0.00059–0.001
5 in.)
Go to Step 1
0.019–0.070 Go to Step 15
mm
(0.0007–0.0027
in.)
Go toStep 1
Yes No
System OK
Go to Step 4
Go to Step 6
Step 8
Go to Step 10
Go to Step 12
Go to Step 14
System OK