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Chapter 2 Engine MechanicalSection 1 Engine ComponentsComponent ViewFigure 2-1Engine MechanicalEngine Components3-8Upside of radiator support
Engine cover lock assembly
Starter assembly
Output pipe of oil cooler
Input pipe of oil coolerTransmission control cable assembly Fuel oil sub-assembly Accelerator control cable assemble
Water inlet pipe of heater
Water outlet pipe of heaterTransmission control cable assemblySuitable for 1.5L/1.6L(Tight coupling)Suitable for 1.3L/1.5L(Non-tight coupling) Radiator assemblyAir filter assembly with hose
Clutch release assembly
Water inlet pipe of radiator
Water outlet pipe of radiator
Battery -
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Component ViewFigure 2-2Engine MechanicalEngine Components3-9V-belt of fan and generator
V-belt of vane pump (with power
steering mechanism)
No.1 V-belt
Glove case door
assemblyFront exhaust pipe assemblySeparator of the right
engine support: Non-reusable partsLeft front drive shaft assemblyLeft nut on the front hubSteering
column
coverSteering column
assembly
Mounting support of the left engineLeft front speed sensor (with ABS)
Washer
Washer -
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Component ViewFigure 2-3Engine MechanicalEngine Components3-10adjusting support
with power steering
Vane pump assembly with
power steering
Pump support with
power steeringHex. flange
bolt M6¡Á50
Ignition coil
Ignition coilinstallation bracket
Bolt M8¡Á31Fuel oil pipe subassembly
Fuel oil pipe clip
Vent ductSecondary wireBypass hose
Rear end housingWater outlet
pipe housing
No.1 heat shield of
exhaust manifoldOil filter assembly
Washer
Exhaust manifold
Support of exhaust
manifoldO-ring
Fastener of
No.1
injectorInjector
O-ring
Throttle assemblySuction manifold Washer
WasherKnock sensor
Water temperature sensorCrankshaft position sensorGenerator assemblyNo.1 support of compressor
Air conditioner compressorWater inlet pipe housing -
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Component ViewFigure 2-4Air filter assembly with hoseEngine MechanicalEngine Components3-11V-belt of vane pump with
power steering Support of the right engine
V-belt of fan and generator
No.1 V-belt
No.3 Timing belt hood
No.2 Timing belt hood
No.1 Timing belt hoodFan sheaveSecondary wireWasher of the cylinder headCylinder headVent duct
Gasket
Washer
Timing belt
Timing belt guide pulley
Crankshaft
sheave
Generator assembly: Non-reusable parts -
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Section 2 Throttle BodyComponent ViewFigure 2-5Engine MechanicalThrottle Body3-12Washer
Throttle body
Air filter case with pipe
Idle control valve assemblySealAccelerator cable
Bypass hose
Throttle position sensor
Vent duct: Non-reusable parts -
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Dismounting/mounting and disassembly and assembly (see Figure 2-1~2-5).
1. Drain the coolant.
Warning: Do not remove the radiator cover, liquid under pressure or steam (likely to eject) while the engine
and the radiator are still hot in order to avoid scalding.
(1) Remove the radiator cover.
(2) Remove the plug of the radiator, and discharge the coolant.
2. Remove the cable of the accelerator.
Release the nut and remove the cable of the accelerator.
3. Remove the air filter hood with hose.
(1) Disconnect the connector and the wire fastening device of the suction temperature sensor.
(2) Disconnect the vent duct from the air filter hose.
(3) Release the clamping collar bolt of the air filter hose.
(4) Release 2 clamps on the air filter hood.
(5) Disconnect the air filter hose from the throttle body, and remove the air filter hood together with the hose.Figure 2-6
Figure 2-7
Figure 2-8Engine MechanicalThrottle Body3-134. Remove the throttle body assembly (see Fig. 2-6).
(1) Disconnect the connector of the throttle position sensor.
(2) Disconnect the connector of ISC valve.
(3) Remove 2 bolts and 2 nuts, and remove the throttle body from
the suction manifold (see Fig. 2-7).
(4) Disconnect 2 bypass hoses, remove and check the throttle
body (see Fig. 2-8).
Check:
a. Check whether the throttle shaft shakes.
b. Check whether there is any block at each state.
c. Check whether the throttle can open and close smoothly.
d. Check whether there is a gap between the check screw and the
rod of the throttle when the throttle is at CLOSE position.
Attention:
Do not adjust the check screw of the throttle.
If the operation deviates from specifications, replace the
throttle.
(5) Remove the washer of the throttle body.
5. Dismantle throttle body idle speed control valve assembly.
Detach 4 screws, idle speed control valve and washer.
6. Detach throttle position sensor
Detach 2 screws and throttle position sensor.Coolant Bypass Pipe -
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Section 3 Valve Clearance AdjustmentAdjust the throttle gap (see Figure 2-9).
Calculate the thickness of new washer to allow the
gap of the exhaust valve to reach a specified value.
N=T+(A-0.2mm)
Note: where,
N -- Thickness of new washer
T -- Thickness of the washer removed
A -- Measured throttle gap
Calculation formula of the suction valve is: N= T+(A-0.3mm).
(1) Remove the adjusting washer.
a. Rotate the crankshaft until the top of the cam is upwards.
b. The nick of the valve tappet faces toward the front.
c. Press the valve tappet down with a special tool, and place
the tool between the camshaft and the valve tappet (see
Figure 2-10).
Tip:
Place one end, with a mark "9", of the special tool to the position
shown in Figure 1-24 a bit aslant.
If the special tool (B) is put into a deep position too much, it will
be clipped by the washer. In order to avoid the special tool (B) being
too hard to take out, put it into slowly by decreasing the inclination
angle from the suction side.
It is difficult for the special tool (B) to insert due to the shape
of the cam when inserting it from the suction side to the back side of
No.3 cylinder (see Figure 2-10). When adjusting the washer, therefore,
it is advisable to insert from the exhaust side.
d. Press the valve tappet down alternately with the special tool
(A) and (B) to check the throttle gap.
(2) Re-mount the adjusting washer.
a. Mount a new adjusting washer on the valve tappet.
b. Press the valve tappet down with the special tool (A), and
remove the special tool (B).
c. Re-check the throttle gap.Figure 2-9
Figure 2-10
Figure 2-11Engine MachineryValve Clearance Adjustment3-14Camshaft TopUp
Vehicle Front
NotchNotchNotchNo.3 Cylinder back side -
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Chapter 3 Fuel SystemSection 1 Check Fuel System PressureOn-board inspection
1. Check the operation of the fuel pump.
(1) Connect the positive and the negative of the battery to
appropriate connector sockets of the fuel pump (see Figure 3-1).
Attention: Do not start the engine.
If there is pressure present, you will hear that the fuel is flowing.
If there is no pressure present, check the fusible cutout, fuse, EFI
open-circuit relay, fuel pump, ECM (Electronic Control Module) and
circuit joint.
(2) Turn the ignition switch to "OFF".
2. Check the pressure of the fuel.
(1) Check whether the battery voltage is more than 12V.
(2) Disconnect the negative wiring cable from the battery.
(3) Mount a pressure gauge on the fuel input pipe
(see Figure 3-2).
(4) Connect the negative terminal of the battery.
(5) Measure the fuel pressure.
Fuel oil pressure: 265-304kPa
If the pressure is low, check the fuel pipe and connection,
fuel pump, and fuel filter. If the pressure is too high,
replace the regulator.
(6) Start the engine. Measure the fuel pressure at idle speed. The
fuel pressure is 265-304KPa. If the pressure is unsatisfactory, checkFigure 3-1
Figure 3-3 Figure 3-2Fuel SystemCheck Fuel System Pressure3-15the fuel pump, pressure regulator, and injector, and replace if necessary.
(7) After shutting down the engine, check the fuel pressure and
keep the specified pressure for about 5 minutes. The fuel pressure is:
147KPa.
3. The fuel oil pressure regulator (DR) (see Figure 3-3).
Mounting position: On the distributing pipe for fuel.
Faults: Too low or too high fuel pressure, or hard to start.
General causes: Using poor fuel for a long time results in: 1.
strainer blocked; 2. serious leakage caused by particles and impurities.
Other reasons: Man-made mechanical damage, etc.
Maintenance precautions: During maintenance: 1. Never impact the diaphragm element with high pressure
gas; 2. Never clean it with aggressively corrosive liquid; 3. No distortion caused by external force.
Easy measuring method: For the system with oil return, connect a pressure gauge for the fuel on the suction
pipe, start the engine, and run at idle speed. Now, the fuel pressure in the engine should be about 260KPa; pull out
the vacuum pipe of the fuel pressure regulator, and the pressure should be 300KPa approximately.Battery
T conector
Hose
Hose
Fuel Inlet Pipe
Fuel Pipe
Conector -