Daewoo Nubira User Manual page 545

1F – 40IENGINE CONTROLS
Step
35
1. Turn the ignition OFF.
2. Disconnect the electrical connector at the fuel
pump.
3. Connect a test light between the fuel pump
connector terminals 3 and 2.
4. Turn the ignition ON.
5. With the ignition ON, the test light should light
for the time specified.
Is the test light on?
36 Replace the fuel pump.
Is the repair complete?
37 Is the fuel pressure within the value specified?
38
1. Check the fuel filter for a restriction.
2. Inspect the fuel lines for kinks and restrictions.
Is the problem found?
39
1. Replace the fuel filter and/or the fuel lines as
needed.
2. Connect a fuel pressure gauge.
3. Crank the engine.
Is the fuel pressure within the value specified?
40
1. Disconnect the vacuum line from the fuel pres-
sure regulator.
2. Inspect the vacuum line for the presence of
fuel.
3. Inspect the fuel pressure regulator vacuum port
for the presence of fuel.
Is any fuel present?
41 Check the fuel for contamination.
Is the fuel contaminated?
42
1. Remove the contaminated fuel from the fuel
tank.
2. Clean the fuel tank as needed.
Is the repair complete?
43 Replace the fuel pressure regulator.
Is the repair complete?
44
1. Remove the fuel pump assembly from the fuel
tank.
2. Inspect the fuel pump sender and the fuel cou-
pling hoses for a restriction.
3. Inspect the in–tank fuel filter for a restriction.
Is the problem found?
45 Replace the fuel pump sender, the in–tank fuel filter,
and/or the fuel coupling hoses as needed.
Is the repair complete?
Action Value(s) Yes
2 sec Go toStep 36
Go toStep 2
283–324 kPa Go toStep 41
(41–47 psi)
Go toStep 39
283–324 kPa Go toStep 2
(41–47 psi)
Go toStep 43
Go toStep 42
Go toStep 2
Go toStep 2
Go toStep 45
Go toStep 2
No
Go toStep 46
Go toStep 38
Go toStep 40
Go toStep 40
Go toStep 44
Go toStep 58
Go toStep 36
DAEWOO V–121 BL4