Daewoo NUBIRA, User Manual

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GENERAL ENGINE INFORMATION 1A – 9
DAEWOO V–121 BL4
Piston Noises
Step Action Value(s) Yes No
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? Go to Step 2 System OK
2 Inspect the piston pin and the bushing.
Is the piston pin or the bushing worn or loose? Go toPistons
and Rods Re-
placement Pro-
cedure
Go to Step 3
3 Inspect the piston.
Is the piston broken or cracked? Go toPistons
and Rods Re-
placement Pro-
cedure
Go to Step 4
4 Inspect the connecting rods.
Is there a misaligned connecting rod? Go toPistons
and Rods Re-
placement Pro-
cedure
Go to Step 5
5 Inspect the piston position.
Is the piston 180
³
out of position?
Go toPistons
and Rods Re-
placement Pro-
cedure
System OK