Daewoo Musso. Manual - part 172

1F2-48  M161 ENGINE CONTROLS

The pressure difference between the fuel pressure and
the intake manifold is approx. 3.2 bars during idling.

<Fuel Pressure Diagram>

1. Fuel pressure Regulator
2. Intake Manifold
3. Fuel Return(to fuel tank)
4. Fuel Supply(from fuel pump)
7. Fuel Pressure(approx. 3.2 bars)
8. Intake Manifold Negative Pressure(0.6 bars)

A. Fuel pressure
B. Intake Manifold Negative Pressure
LL. Idling
TL. Partial load
VL. Full load

M161 ENGINE CONTROLS  1F2-49

FUEL DISTRIBUTOR

Preceding Work : Removal of intake air duct

1 Fuel Distributor
2 Circlip
3 Fuel Pressure Regulator
4 O-ring
5 Fuel Pressure Test Connector
6 Seal Ring
7 Vacuum Hose
8 Combination Bolt (M8 X 120) ......... 22.5-27.5 Nm

9 Fuel Return Line

10 Seal Ring

11 Hollow Bolt ..................................... 22.5-27.5 Nm

12 Clamp
13 Bolt (M8 X 22) ........................................ 9-11 Nm
14 Injector Bracket
15 Injector
16 O-ring

1F2-50  M161 ENGINE CONTROLS

Tightening Torque

22.5 - 27.5 Nm

Tightening Torque

22.5 - 27.5 Nm

Removal & Installation Procedure

1. Discharge the fuel pressure from the fuel pressure test

connector by pushing service valve (arrow).

2. Disconnect the battery ground cable.

3. Disconnect the vacuum hose from the fuel pressure

regulator.

4. Disconnect the cable from ignition coil.

5. Remove the fuel return and supply line.

Installation Notice

Notice

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For removal, cover around parts with cloths not to

bestained by fuel.

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In case of checking the injector only, do not remove the

fuel return and supply line.

6. Remove the four injector connectors (arrows).

7. Unscrew the two combination bolts (8).

Installation Notice

M161 ENGINE CONTROLS  1F2-51

9. Installation should follow the removal procedure in the

reverse order.

10. Check for fuel pressure and internal leakage by operating

the engine.

8. Pull out the injector from intake manifold and remove the

fuel distributor.

Notice

Replace the injector O-ring with new one.

Ignition Coil & Cable

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Ignition coil T1/1 No.1 cylinder + No.4 cylinder

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Inition coil T1/2 No.1 cylinder + No.4 cylinder