Piston Noises - Daewoo Nubira Owner's Manual

Step
1 Are any of the following noises heard: a sharp double
knock when the engine is idling, a light ticking with
no load on the engine, or a "slapping" noise when the
engine is cold?
2 Inspect the piston pin and the bushing.
Is the piston pin or the bushing worn or loose?
3 Inspect the piston.
Is the piston broken or cracked?
4 Inspect the connecting rods.
Is there a misaligned connecting rod?
5 Inspect the piston position.
Is the piston 180³ out of position?
DAEWOO V–121 BL4

Piston Noises

Action
GENERAL ENGINE INFORMATION 1A – 9
Value(s)
Go to Step 2
Go toPistons
and Rods Re-
placement Pro-
cedure
Go toPistons
and Rods Re-
placement Pro-
cedure
Go toPistons
and Rods Re-
placement Pro-
cedure
Go toPistons
and Rods Re-
placement Pro-
cedure
Yes No
System OK
Go to Step 3
Go to Step 4
Go to Step 5
System OK