evap MITSUBISHI LANCER 2006 Workshop Manual

17-1
GROUP 17
ENGINE AND
EMISSION
CONTROL
CONTENTS
ENGINE CONTROL . . . . . . . . . .17-2
GENERAL INFORMATION . . . . . .17-2
SERVICE SPECIFICATIONS. . . . .17-2
ON-VEHICLE SERVICE. . . . . . . . .17-2
ACCEL CABLE CHECK AND
ADJUSTMENT . . . . . . . . . . . . . . . . . . . . 17-2
ACCELERATOR CABLE AND
PEDAL . . . . . . . . . . . . . . . . . . . . . .17-3
REMOVAL AND INSTALLATION . . . . . 17-3
EMISSION CONTROL MPI . . . .17-4
GENERAL INFORMATION . . . . . .17-4
EMISSION CONTROL DEVICE
REFERENCE TABLE . . . . . . . . . .17-4
SERVICE SPECIFICATION(S) . . .17-5
VACUUM HOSE. . . . . . . . . . . . . . .17-5
VACUUM HOSE PIPING DIAGRAM . . . 17-5
VACUUM CIRCUIT DIAGRAM . . . . . . . 17-7
VACUUM HOSE CHECK. . . . . . . . . . . . 17-7
VACUUM HOSE INSTALLATION . . . . . 17-8
CRANKCASE EMISSION CONTROL
SYSTEM . . . . . . . . . . . . . . . . . . . . .17-8
GENERAL INFORMATION (CRANKCASE
EMISSION CONTROL SYSTEM) . . . . . 17-8
COMPONENT LOCATI ON (CRANKCASE
EMISSION CONTROL SYSTEM) . . . . . 17-9
POSITIVE CRANKCASE VENTILATION SYSTEM
CHECK . . . . . . . . . . . . . . . . . . . . . . . . . 17-9
POSITIVE CRANKCASE VENTILATION (PCV)
VALVE CHECK . . . . . . . . . . . . . . . . . . . 17-9
EVAPORATIVE EMISSION CONTROL
SYSTEM . . . . . . . . . . . . . . . . . . . . .17-9
GENERAL INFORMATION (EVAPORATIVE
EMISSION CONTROL SYSTEM) . . . . . 17-9
COMPONENT LOCATION (EVAPORATIVE
EMISSION CONTROL SYSTEM) . . . . . 17-10
PURGE CONTROL SYSTEM CHECK . . 17-10
PURGE PORT VACUUM CHECK . . . . . 17-11
PURGE CONTROL SOLENOID VALVE
CHECK . . . . . . . . . . . . . . . . . . . . . . . . . . 17-11
FUEL VAPOUR CANISTER REMOVAL
AND INSTALLATION . . . . . . . . . . . . . . . 17-12
EXHAUST GAS RECIRCULATION
(EGR) SYSTEM . . . . . . . . . . . . . . .17-12
GENERAL INFORMATION
(EGR SYSTEM) . . . . . . . . . . . . . . . . . . . 17-12
COMPONENT LOCATION
(EGR SYSTEM) . . . . . . . . . . . . . . . . . . . 17-14
EGR SYSTEM CHECK . . . . . . . . . . . . . 17-15
EGR VALVE CHECK . . . . . . . . . . . . . . . 17-15
EGR PORT VACUUM CHECK <4G1>. . 17-16
EGR PORT VACUUM CHECK <4G6>. . 17-16
EGR CONTROL SOLENOID VALVE
CHECK <4G1> . . . . . . . . . . . . . . . . . . . . 17-16
EGR CONTROL SOLENOID VALVE
CHECK <4G6> . . . . . . . . . . . . . . . . . . . . 17-17
EXHAUST GAS RECIRCULATION (EGR)
VALVE REMOVAL AND I
NSTALLATION . . . . . . . . . . . . . . . . . . . . 17-18
CATALYTIC CONVERTER . . . . . .17-19
REMOVAL AND INSTALLATION
<4G1, 4G6-M/T> . . . . . . . . . . . . . . . . . . 17-19
REMOVAL AND INSTALLATION
<4G6-A/T> . . . . . . . . . . . . . . . . . . . . . . . 17-19

EMISSION CONTROL
ENGINE AND EMISSION CONTROL17-4
INSTALLATION SERVICE POINT
>>A<< ACCEL PEDAL PAD INSTALLA-
TION
CAUTION
To prevent damages to the accelerator pedal pad,
warm the thumb area of the accelerator pedal
pad with a dryer, etc. prior to assembling it.
NOTE: If it is difficult to assemble, apply soapy water
to the thumb area to enhance the assembling proc
-
ess.
EMISSION CONTROL
GENERAL INFORMATION
M1173000100370
The emission control system consists of the following
subsystems:
•Crankcase emission control system
•Evaporative emission control system
•
ItemsNameSpecification
Crankcase emission control
systemPositive crankcase ventilation
(PCV) valveVariable flow type
(Purpose: HC reduction)
Evaporative emission control
systemCanister
Purge control solenoid valve
Equipped
Duty cycle type solenoid valve
(Purpose: HC reduction)
Exhaust emission control systemAir-fuel ratio control device - MPI
systemOxygen sensor feedback type
(Purpose: CO, HC, NOx reduction)
Exhaust gas recirculation system
•EGR valve
•EGR control solenoid valve
Equipped
Single type
Duty cycle type solenoid valve
(Purpose: NOx reduction)
Catalytic converterMonolith type
(Purpose: CO, HC, NOx reduction)
Exhaust emission control system
EMISSION CONTROL DEVICE
REFERENCE TABLE
M1173006600135
Related partsCrankcase
emission
control
systemEvaporative
emission
control
systemAir/fuel ratio
control
systemCatalytic
converterExhaust gas
recirculation
system
PCV valve×
Purge control solenoid valve×
MPI system component××
Catalytic converter×
EGR valve×
EGR control solenoid valve×
7.Accelerator control equip bushing
8.Accelerator pedal arm return spring
9.Accelerator pedal arm stopper
10.Accelerator pedal arm bracket
11 .Accelerator pedal arm
>>A<<12.Accelerator pedal pad
13.Accelerator pedal arm stopper
Accelerator pedal assembly
removal steps (Continued)

EMISSION CONTROL
ENGINE AND EMISSION CONTROL17-9
COMPONENT LOCATION (CRANKCASE
EMISSION CONTROL SYSTEM)
M1173007400208
AK300767
<4G1>
AB
PCV valve
AK204366
<4G6>
AC
PCV valve
POSITIVE CRANKCASE VENTILATION
SYSTEM CHECK
M11 7300 1 1 0017 9
1.Remove the ventilatio n hose from the PCV valve.
2.Remove the PCV valve from t he rocker cove r .
3.Reinst all the PCV valve at the ven t ila tion h o se.
4.S t art the engin e and run at idle .
AKX00336
PCV valve
AD
5.Pla c e a fing er at the open ing o f the PCV va lve
an d ch eck that vacu um o f the int a ke manifold is
fe lt.
NOTE: At this mo men t, the p l unge r in t he PCV
valve mo ves back an d forth.
6.If vacuum is not felt, clean t he PCV valve o r
re place it.
POSITIVE CRANKCASE VENTILA TION
(
P CV) V A L VE CHECK
M1173 0012 0018 7
AK100010
PCV valve
AC
1.In sert a thin rod in to the PCV valve from the side
shown in the illu strat i on (ro cke r cover in st allation
side) , and move the ro d back an d forth to ch eck
th at the plung er mo ves.
2.If the plunger does not move , there is a clo ggin g
in the PCV valve. In th is case, clean o r repla c e
th e PCV valve.
EVAPORA T IVE EMISSION CONTROL
SYSTEM
GENERAL INFORMA T ION (EV A PORA TIVE
EMISSION CONTROL SYSTEM)
M1173 0051 0040 5
The evaporat ive emission contro l syste m pre v ent s
f
uel vapours generat ed in t he fuel t ank from escaping
into t
he atmosp here.
Fuel vapours fro m the fuel t a n k flow throug h the f uel
t
a n k pre ssu re co ntrol valve an d vap our pipe/ho se to
be st
ored te mpora r ily in t he ca nister .
When dr iving the veh i cle, fue l va pours stor ed in the
canister
flow thro ugh th e purge solenoid and purge
port an
d go into the int a ke ma nifold to b e sen t to th e
combust
i on chamber .
When the eng ine co ola n t te mp eratu r e is low o r when
the int
a ke air q uantity is small (wh en the engine is at
idle
, for example), t he eng ine contro l unit turns the
purge sole
noid of f to shu t of f the fue l va pour flow to
the in
t a ke manif o ld.
This does not on ly insure the driveability when t he
engin
e is cold or runn ing und er low load b u t also st a
-
bilize the emissio n level.