Downloaded from www.Manualslib.com manuals search engine 0A-10 GENERAL INFORMATION
Precautions For Catalytic Converter
For vehicles equipped with a catalytic converter, use only unleaded gasoline and be careful not to let a
large amount of unburned gasoline enter the converter or it can be damaged.
Conduct a spark jump test only when necessary, make it as short as possible, and do not open the
throttle.
Conduct engine compression checks within the shortest possible time.
Avoid situations which can result in engine misfire (e.g. starting the engine when the fuel tank is
nearly empty.)
Precautions For Electrical Circuit Service
When replacing a fuse, make sure to use a fuse of the
specified capacity. Use of a fuse with a larger capacity
will cause a damage to the electrical parts and a fire.
When disconnecting and connecting coupler, make sure
to turn ignition switch OFF, or electronic parts may get
damaged.
When disconnecting connectors, never pull the wiring
harnesses. Unlock the connector lock first and then pull
them apart by holding connectors themselves.
Downloaded from www.Manualslib.com manuals search engine MAINTENANCE AND LUBRICATION 0B-9
When carrying out periodic maintenance, or the vehicle is raised
for other service, check exhaust system as follows:
Check rubber mountings for damage, deterioration, and out
of position.
Check exhaust system for leakage, loose connections, dents
and damages.
If bolts or nuts are loose, tighten them to specification.
Check nearby body areas for damaged, missing, or misposi-
tioned parts, open seams, holes, loose connections or other
defects which could permit exhaust fumes to seep into the
vehicle.
Make sure that exhaust system components have enough
clearance from the underbody to avoid overheating and pos-
sible damage to the floor carpet.
Any defects should be fixed at once.
Ignition System
Spark Plugs
REPLACEMENT
Replace spark plugs with new ones referring to “Spark Plug” in
Section 6F.
Fuel System
Air Cleaner Filter
INSPECTION
1) Remove air cleaner case clamps (1).
2) Take cleaner filter out of air cleaner case.
3) Check air cleaner filter for dirt. Replace excessively dirty fil-
ter.
4) Blow off dust by compressed air from air outlet side of filter.
5) Install air cleaner filter into case.
6) Install air cleaner case cap and clamp it securely.
Downloaded from www.Manualslib.com manuals search engine ENGINE GENERAL INFORMATION AND DIAGNOSIS 6-5
Fuel pressure relief procedure
After making sure that engine is cold, release fuel pressure as fol-
lows.
1) Place transmission gear shift lever in “Neutral” (Shift selector
lever to “P” range for A/T model), set parking brake, and
block drive wheels.
2) Remove relay box cover.
3) Disconnect fuel pump relay (1) from its connector.
4) Remove fuel filler cap to release fuel vapor pressure in fuel
tank and then reinstall it.
5) Start engine and run it till it stops for lack of fuel. Repeat
cranking engine 2-3 times for about 3 seconds each time to
dissipate fuel pressure in lines. Fuel connections are now
safe for servicing.
6) Upon completion of servicing, connect fuel pump relay (1) to
its connector.
Fuel leakage check procedure
After performing any service on fuel system, check to make sure
that there are no fuel leakages as follows.
1) Turn ON ignition switch for 3 seconds (to operate fuel pump)
and then turn it OFF.
Repeat this (ON and OFF) 3 or 4 times and apply fuel pres-
sure to fuel line. (till fuel pressure is felt by hand placed on
fuel feed hose.)
2) In this state, check to see that there are no fuel leakages
from any part of fuel system. CAUTION:
This work must not be done when engine is hot. If done
so, it may cause adverse effect to catalyst.
Downloaded from www.Manualslib.com manuals search engine 6-26 ENGINE GENERAL INFORMATION AND DIAGNOSIS
Excessive engine oil
consumptionSticky piston ring Pistons, piston rings, connecting rods
and cylinders in Section 6A1.
Worn piston and cylinder Pistons, piston rings, connecting rods
and cylinders in Section 6A1.
Worn piston ring groove and ring Pistons, piston rings, connecting rods
and cylinders in Section 6A1.
Improper location of piston ring gap Pistons, piston rings, connecting rods
and cylinders in Section 6A1.
Worn or damaged valve stem seal Valves and cylinder head in Section
6A1.
Worn valve stem Valves and cylinder head in Section
6A1.
Low oil pressure
Improper oil viscosity ITEM1-3 Engine oil and oil filter
change in Section 0B.
Malfunctioning oil pressure switch Oil pressure switch in Section 8.
Clogged oil strainer Oil pan and oil pump strainer in Sec-
tion 6A1.
Functional deterioration of oil pump Oil pump in Section 6A1.
Worn oil pump relief valve Oil pump in Section 6A1.
Excessive clearance in various sliding
partsRefer to Section 6A1.
Engine noise
See NOTE below.Improper valve lash Valve lash in Section 6A1.
Worn valve stem and guide Valves and cylinder head in Section
6A1.
Weak or broken valve spring Valve springs in Section 6A1.
Warped or bent valve Valves and cylinder head in Section
6A1.
Loose camshaft housing bolts Camshaft in Section 6A1.
Worn piston, ring and cylinder bore Pistons and cylinders in Section 6A1.
Worn crankpin bearing Crankpin and connecting rod bearing
in Section 6A1.
Worn crankpin Crankpin and connecting rod bearing
in Section 6A1.
Loose connecting rod nuts Connecting rod in Section 6A1.
Low oil pressure Previously outlined.
Worn crankshaft journal bearing Main bearings, Crankshaft and cylin-
der block in Section 6A1.
Worn crankshaft journal Main bearings, Crankshaft and cylin-
der block in Section 6A1.
Loose lower crankcase (bearing cap) bolts Main bearings, Crankshaft and cylin-
der block in Section 6A1.
Excessive crankshaft thrust play Main bearings, Crankshaft and cylin-
der block in Section 6A1. Condition Possible Cause Reference Item
NOTE:
Before checking the mechanical noise, make sure that :
Ignition timing is properly adjusted.
Specified spark plug is used.
Specified fuel is used.
Downloaded from www.Manualslib.com manuals search engine 6-32 ENGINE GENERAL INFORMATION AND DIAGNOSIS
FUEL TANK LEVEL (%)
This parameter indicates approximate fuel level in the fuel tank. As the detectable range of the fuel level sensor
is set as 0 to 100%, however, with some models whose fuel tank capacity is smaller, the indicated fuel level may
be only 70% even when the fuel tank is full.
PNP SIGNAL (PARK / NEUTRAL POSITION SIGNAL, P/N RANGE or D RANGE)
It is detected by signal from TCM.
D range : A/T is in “R”, “D”, “2” or “L” range.
P/N range : A/T is in “P” or “N” range or the above signal is not inputted from TCM.
EGR VALVE (%)
This parameter indicates opening rate of EGR valve which controls the amount of EGR flow.
PSP SW
The Power Steering Pressure switch parameter displays ON when steering wheel is turned all the way to the
right or left.
Downloaded from www.Manualslib.com manuals search engine 6A1-18 ENGINE MECHANICAL (M13 ENGINE)
Throttle Body and Intake Manifold
REMOVAL
1) Relieve fuel pressure referring to “Fuel Pressure Relief Pro-
cedure” in Section 6.
2) Disconnect negative cable at battery.
3) Drain coolant by loosening drain plug (1).
1. Intake manifold 7. EVAP canister purge valve 13. Intake manifold mounting nut 19. Injector assembly
2. Intake manifold gasket 8. TP sensor 14. Intake manifold mounting bolt (short) 20. Cushion
3. Throttle body 9. IAC valve 15. Intake manifold mounting bolt (long) Tightening torque
4. Gasket 10. Fuel delivery pipe 16. EGR pipe gasket Do not reuse
5. EGR pipe 11. Engine hook 17. O-ring
6. MAP sensor 12. Intake manifold stiffener 18. Grommet
WARNING:
To help avoid danger of being burned, do not remove
drain plug (1) and radiator cap while engine and radiator
are still hot. Scalding fluid and steam can be blown out
under pressure if plug and cap are taken off too soon.
Downloaded from www.Manualslib.com manuals search engine ENGINE MECHANICAL (M13 ENGINE) 6A1-49
REMOVAL
1) Relieve fuel pressure referring to “Fuel Pressure Relief Pro-
cedure” in Section 6.
2) Disconnect negative cable at battery.
3) Drain engine oil.
4) Drain coolant by loosening drain plug (1).
5) Remove air cleaner outlet No.1 and No.2 hoses and
breather hose.
6) Remove intake manifold bracket (1) with main harness from
intake manifold.
7) Disconnect the following electric lead wires:
EGR valve (if equipped)
IAC valve (2)
TP sensor (3)
MAP sensor (4)
CMP sensor
ECT sensor
EVAP canister purge valve (5)
Injectors (6)
Ignition coils
Heated oxygen sensor
Ground terminal (7) from intake manifold
Each wire harness clamps
8) Remove heated oxygen sensor bracket from cylinder head
and detach heated oxygen sensor coupler from its bracket. WARNING:
To help avoid danger of being burned, do not remove
drain plug (1) and radiator cap while engine and radiator
are still hot. Scalding fluid and steam can be blown out
under pressure if plug and cap are taken off too soon.
Downloaded from www.Manualslib.com manuals search engine 6A1-62 ENGINE MECHANICAL (M13 ENGINE)
Pistons, Piston Rings, Connecting Rods and Cylinders
REMOVAL
1) Relieve fuel pressure referring to “Fuel Pressure Relief Pro-
cedure” in Section 6.
2) Disconnect negative cable at battery.
3) Drain engine oil.
4) Drain coolant.
5) Remove cylinder head referring to “Valves and Cylinder
Head” in this section.
6) Mark cylinder number on all pistons, connecting rods and
connecting rod caps using silver pencil or quick drying paint.
7) Remove rod bearing caps.
1. Top ring8. Piston pin
2. 2nd ring9. Piston pin circlip
3. Oil ring10. Bearing cap nut
1) Tighten all nuts to 15 N·m (1.5 kg-m)
2) Turn all nuts to 45°
3) Then, turn all nuts to 45° once again
4. PistonTightening torque
5. Connecting rod
: Apply engine oil to sliding surface except inner surface of big end, and rod bolts.
Make sure rod bolt diameter when reuse it due to plastic deformation tightening.
Refer to “Inspection” of “Connecting Rod”.Apply engine oil to sliding surface of each
parts.
6. Connecting rod bearing cap
: Point arrow mark on cap to crankshaft pulley side.Do not reuse.
7. Connecting rod bearing