Daewoo NUBIRA User Manual

ENGINE CONTROLS 1F – 375
DAEWOO V–121 BL4
Step NoYesValue(s)Action
9
1. Repair or replace any ignition system compo-
nents as needed.
2. Perform an emission test.
Does the vehicle pass the emission test?
System OK
10
1. Inspect for vacuum leaks.
2. Inspect the catalytic converter for contamina-
tion.
3. Inspect for carbon buildup on the throttle body
and the throttle plate and inside the engine.
Remove with a top engine cleaner.
4. Check the Exhaust Gas Recirculation (EGR)
valve to make sure it opens.
5. Check for proper Positive Crankcase Ventila-
tion (PCV) operation.
Are all checks and needed repairs complete?
System OK
DIESELING, RUN–ON
An engine continues to run after the ignition switch
is turned OFF.
Step Action Value(s) Yes No
1 Were the Important Preliminary Checks performed? Go toStep 2 Go to”Impor-
tant Preliminary
Checks”
2 Does the engine run smoothly after the ignition
switch is turned OFF?
Go toStep 3 Go toStep 4
3
1. Check the ignition switch and the ignition
switch adjustment.
2. Replace the ignition switch if needed.
Is the repair complete?
System OK
4
1. Check the evaporative emission system.
2. Check for leaking fuel injectors.
3. Check the Idle Air Control (IAC) valve opera-
tion.
4. Inspect for vacuum leaks.
5. Check for the proper base idle setting.
Are all checks and repairs complete?
System OK

Daewoo NUBIRA Specifications

General

Brand	Daewoo
Model	NUBIRA
Category	Automobile
Language	English