Page 4280 of 5883
MA-40
< ON-VEHICLE MAINTENANCE >
ENGINE MAINTENANCE (MR18DE)
SPARK PLUG : Component
INFOID:0000000001730863
SPARK PLUG : Removal and InstallationINFOID:0000000001730864
REMOVAL
1. Remove intake manifold. Refer to EM-156, "Removal and Installation".
2. Remove ignition coil.
CAUTION:
Handle it carefully and avoid impacts.
Never disassemble.
3. Remove spark plug using suitable tool.
CAUTION:
Never drop or shock it.
1. PCV hose 2. Rocker cover 3. Spark plug
4. Ignition coil 5. PCV hose 6. PCV valve
7. O-ring 8. Gasket
A. To air duct B. Refer to MA-40
. C. To intake manifold
PBIC3536J
PBIC3871E
Page 4281 of 5883
ENGINE MAINTENANCE (MR18DE)
MA-41
< ON-VEHICLE MAINTENANCE >
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INSPECTION AFTER REMOVAL
CAUTION:
Never drop or shock spark plug.
Checking and adjusting spark plug gap is not required
between change intervals.
If spark plug tip is covered with carbon, a spark plug cleaner may be used.
Never use wire brush for cleaning spark plug.
INSTALLATION
1. Install spark plug using suitable tool.
CAUTION:
Never drop or shock it.
2. Install ignition coil.
CAUTION:
Handle it carefully and avoid impacts.
Never disassemble.
3. Install intake manifold. Refer to EM-156, "
Removal and Installation".
EVAP VAPOR LINES
EVAP VAPOR LINES : InspectionINFOID:0000000001277636
Refer to FL-10, "Removal and Installation"
SMA806CA
Cleaner air pressure
: Less than 588 kPa (5.88 bar, 6 kg/cm2, 85 psi)
Cleaning time : Less than 20 seconds
SMA773C
Plug type : Platinum tipped
Make : NGK
Part number : PLZKAR6A-11
Gap (nominal) : 1.1 mm (0.043 in)
PBIC3871E
Page 4282 of 5883

MA-42
< ON-VEHICLE MAINTENANCE >
ENGINE MAINTENANCE (K9K)
ENGINE MAINTENANCE (K9K)
DRIVE BELTS
DRIVE BELTS : Exploded ViewINFOID:0000000001730873
DRIVE BELTS : Inspection and AdjustmentINFOID:0000000001730874
INSPECTION
WARNING:
Be sure to perform when the engine is stopped.
1. Inspect drive belt for cracks, fraying, wear and oil. Replace drive belt if necessary.
2. Manually evaluate the drive belt tension (tension cannot be measured using frequency meter).
3. Replace drive belt when tension is beyond normal operating limit.
CAUTION:
Auto-tensioner must be replaced with a new one when the belt is replaced.
ADJUSTMENT
Belt tensioning is not necessary, as it is automatically adjusted by auto-tensioner.
ENGINE COOLANT
ENGINE COOLANT : InspectionINFOID:0000000001730880
LEVEL CHECK
Check if the reservoir tank engine coolant level is within the “MIN”
to “MAX” range when engine is cool.
Adjust the engine coolant level as necessary.
CHECKING COOLING SYSTEM FOR LEAKS
E1BIA0021ZZ
1. Crankshaft pulley 2. A/C compressor 3. Drive belt
4. Generator 5. Drive belt auto-tensioner
SMA412B
Page 4284 of 5883

MA-44
< ON-VEHICLE MAINTENANCE >
ENGINE MAINTENANCE (K9K)
4. Start engine without closing reservoir tank cap and keep engine racing at 1,500 rpm for about 2-3 minutes.
If necessary, pour engine coolant up to MAX level.
If coolant overflows reservoir tank hole, install filler cap.
Watch engine coolant temperature gauge so as not overheat the engine.
WARNING:
Be careful not to be scaled with hot engine coolant or vacuum pump when operating.
Radiator fan blade can start at any time and cause personal injuries.
5. Turn off the engine and loosen air relief plug until coolant spills from air relief hole.
6. Close the air relief plug and run the engine at 2,000 rpm until the upper hose becomes hot and radiator
fan operates. Leave the engine running approximately 5 minutes at idle speed and check for sound of
coolant flow while running engine from idle up to 3,000 rpm.
Sound may be noticeable at heater water cock.
7. If sound is heard, bleed air from cooling system by repeating steps 4 to 6 until coolant level no longer
drops.
Check the radiator lower hose for any signs of leakage.
8. Turn off the engine and let it cool down.
Cool down using a fan to reduce the time.
9. After cooling period, loosen the air relief plug and check if coolant spills from the air relief hole. if not,
remove the air relief plug until the coolant spills, and then close the relief air plug. Bleed air from cooling
system by repeating steps 6 to 10 until the coolant spills immediately.
10. Check the engine coolant level when engine is cool and refill to MAX level line if the level is lower.
Clean excess coolant from engine.
11. Check that the reservoir tank cap is tightened.
ENGINE COOLANT : FlushingINFOID:0000000001730883
1. Install reservoir tank if removed.
If water drain plug on cylinder block is removed, close and tighten it. Refer to EM-314, "
Exploded
View".
2. Fill reservoir tank with water until water spills from the air relief hole, then close air relief plug. Reinstall
reservoir tank cap.
3. Run engine and warm it up to normal operating temperature.
4. Rev engine two or three times under no-load.
5. Stop engine and wait until it cools down.
6. Drain water.
7. Repeat steps 1 through 6 until clear water begins to drain from radiator.
8. Blow compressed air into cooling circuit through the reservoir tank valve hole to drain all the water.
RADIATOR
RADIATOR : Checking Radiator CapINFOID:0000000001730884
Check valve seat of radiator cap.
- Check if valve seat is swollen to the extent that the edge of the
plunger cannot be seen when watching it vertically from the top.
- Check if valve seat has no soil and damage.
PBIC2816E
Page 4286 of 5883
MA-46
< ON-VEHICLE MAINTENANCE >
ENGINE MAINTENANCE (K9K)
AIR CLEANER FILTER
AIR CLEANER FILTER : Removal and InstallationINFOID:0000000001730875
REMOVAL
1. Push the tabs (A) of both ends of the air cleaner cover (1) into
the inside (B).
2. Pull up the air cleaner cover (1) and remove it (C).
3. Remove air cleaner filter (1) and holder (2) assembly from the
air cleaner case.
4. Remove the air cleaner filter (1) from the holder (2).
INSPECTION AFTER REMOVAL
It is necessary to clean air cleaner filter or replace it at the recommended intervals, more often under dusty
conditions. Refer to MA-7, "
Periodic Maintenance".
Blow air into the back side of air cleaner filter until no objects spray
out.
INSTALLATION
Installation is in the reverse order of removal.
Install the air cleaner cover (1) in the direction shown.
ENGINE OIL
PBIC3557J
PBIC3558J
SMA384C
2 : Air cleaner filter
3 : Holder
PBIC3559J
Page 4287 of 5883

ENGINE MAINTENANCE (K9K)
MA-47
< ON-VEHICLE MAINTENANCE >
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ENGINE OIL : InspectionINFOID:0000000001730878
OIL LEVEL AND MUDDINESS
Before starting the engine, check the oil level placing the vehicle
on a level surface. If the engine is already started, stop it and allow
10 minutes before checking.
Make sure the oil level is within the range shown.
If it is out of range, adjust it.
Check the oil for white turbidity or remarkable contamination.
If the oil becomes turbid and white, it is highly probable that it is
contaminated with coolant. Find the cause and repair.
OIL LEAKAGE
Check for oil leakage around the following area.
Oil pan
Oil pan drain plug
Oil pressure switch
Oil filter bracket
Vacuum pump
Oil pump housing
Mating surface between cylinder block and cylinder head
Mating surface between cylinder head and rocker cover
Oil cooler
Crankshaft oil seals
OIL PRESSURE CHECK
WARNING:
Be careful not to burn yourself, as the engine oil is hot.
Oil pressure check should be done in Neutral “N” position.
1. Check the engine oil level.
2. Remove engine undercover using power tool.
3. Disconnect the electrical connector (A) and remove the oil pres-
sure switch (1) to connect the oil pressure gauge [SST:
KV113E0020 (Mot. 836-05)].
4. After warming up the engine, make sure oil pressure corre-
sponding to the engine speed is produced.
5. After checking, install the oil pressure switch (1) as follows.
a. Remove old sealant adhering to the oil pressure switch (1) and
engine.
b. Apply thread sealant.
Use Genuine Liquid Gasket or equivalent.
6. Start engine and check for oil leakage.
ENGINE OIL : DrainingINFOID:0000000001730876
WARNING:
Be careful not to burn yourself, as the engine oil is hot.
MBIB0548E
Idle speed : Refer to LU-33, "EngineOilPressure".
3000 rpm : Refer to LU-33, "
EngineOilPressure".
Oil pressure switch:
: 25 N·m (2.55 kg-m, 18.4 ft-lb)
ALBIA0418ZZ
Page 4288 of 5883

MA-48
< ON-VEHICLE MAINTENANCE >
ENGINE MAINTENANCE (K9K)
Prolonged and repeated contact with used engine oil may cause skin cancer: try to avoid direct skin
contact with used oil. If skin contact is made, wash thoroughly with soap or hand cleaner as soon as
possible.
1. Put the vehicle on a level surface.
2. Warm up engine, and check for oil leakage from engine components.
3. Stop engine and wait for 10 minutes.
4. Loosen oil filler cap.
5. Remove drain plug and then drain engine oil.
ENGINE OIL : RefillingINFOID:0000000001730877
1. Refill with new engine oil.
The refill capacity depends on the oil temperature and drain time.
Use these specifications for reference only.
Always use the dipstick to determine when the proper amount of oil
is in the engine.
CAUTION:
Be sure to clean drain plug and install with new washer.
The refill capacity depends on the oil temperature and drain
time. Use these specifications for reference only.
Always use the dipstick to determine when the proper amount of oil is in the engine.
2. Warm up engine and check area around drain plug and oil filter for oil leakage.
3. Stop engine and wait for 10 minutes.
4. Check oil level and add engine oil as necessary. Refer to LU-26, "
Inspection".
OIL FILTER
OIL FILTER : ReplacementINFOID:0000000001730879
1. Remove engine undercover using power tool.
2. Using an oil filter wrench [SST: KV113C0010 (Mot. 1329)],
remove oil filter.
CAUTION:
Be careful not to get burned when the engine and engine
oil are hot.
When removing, prepare a shop cloth to absorb any oil
leakage or spillage.
Do not allow engine oil to adhere to the drive belts.
Completely wipe off any oil that adhere to the engine and
the vehicle.
3. Remove foreign materials adhering to the oil filter installation
surface.
4. Install oil filter bracket to oil cooler.
CAUTION:
Install oil filter bracket, positioning lug in the hole of oil cooler. Oil capacity
(Approximate): Refer to MA-19, "
Fluids and
Lubricants".
MBIB0548E
MBIB0551E
Page 4289 of 5883
ENGINE MAINTENANCE (K9K)
MA-49
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5. Apply engine oil to the oil seal contact surface of the new oil fil-
ter.
6. Install the oil filter until it comes into contact with the oil seal on
the engine bracket.
7. Using an oil filter wrench [SST: KV113C0010 (Mot. 1329)],
tighten oil filter.
8. After warming up the engine, check for engine oil leakage.
9. Check oil level and add engine oil as necessary. Refer to MA-47,
"ENGINE OIL : Inspection". Oil filter : 14 N·m (1.4 kg-m, 10 ft-lb)
SMA010