2003 Hyundai Sonata fuel filter

5- 4 VEHICLE MAINTENANCE REQUIREMENTS
F030A01A-AATSCHEDULED MAINTENANCE
The following maintenance services must be performed to ensure good emission control and performance. Keep receipts for all vehicle emission services
to protect your warranty. Where both mileage and time are shown, the frequency of service is determined by whichever occurs first.
DESCRIPTION
EMISSION CONTROL ITEMS
ENGINE OIL AND FILTER
FUEL FILTER
FUEL LINES, FUEL HOSES AND CONNECTIONS
VACUUM AND CRANKCASE VENTILATION HOSES
VAPOR HOSE AND FUEL FILLER CAP
AIR CLEANER FILTER
SPARK PLUGS (PLATINUM COATED) No.
1
2
3
4
5
6
7MILES X 1000
KILOMETERS X 1000
MONTHS7.5
12
6
R15
24
12
R22.5
36
18
R30
48
24
R
I
I
R37.5
60
30
R45
72
36
R52.5
84
42
R
R
I60
96
48
R
I
I
R
R67.5
108
54
R75
120
60
R82.5
132
66
R90
144
72
R
I
I
R97.5
156
78
R105
168
84
R
R
I112.5
180
90
R120
192
96
R
I
I
R
R127.5
204
102
R135
216
108
R142.5
228
114
R150
240
120
R
I
I
R
F030B02Y-AATR :Replace I : Inspect and, after Inspection, clean, adjust, repair or replace if necessary.

VEHICLE MAINTENANCE REQUIREMENTS 5- 7
F060G01A-AATo Vapor Hose and Fuel Filler Cap
The vapor hose and fuel filler cap should be
inspected at those intervals specified in the
maintenance schedule. Make sure that a new
vapor hose or fuel filler cap is correctly re-
placed.
F060D01A-AATo Fuel Lines, Fuel Hoses and Connec-
tions
Check the fuel lines, fuel hoses and connec-
tions for leakage and damage. Have a trained
technician replace any damaged or leaking
parts immediately.
F060A01A-AATEXPLANATION OF SCHEDULED MAIN-
TENANCE ITEMS
F060B02A-AATo Drive Belts
Inspect all drive belts for evidence of cuts,
cracks, excessive wear or oil saturation and
replace if necessary. Drive belts should be
checked periodically for proper tension and
adjusted as necessary.
F060M01A-AATo Engine Oil and Filter
The engine oil and filter should be changed at the
intervals specified in the maintenance sched-
ule. If the car is being driven in severe condi-
tions, more frequent oil and filter changes are
required.
F060C01A-AATo Fuel Filter
A clogged filter can limit the speed at which the
vehicle may be driven, damage the emission
system and cause hard starting. If an exces-
sive amount of foreign matter accumulates in
the fuel tank, the filter may require replacement
more frequently.
After installing a new filter, run the engine for
several minutes, and check for leaks at the
connections. Fuel filters should be installed by
trained technicians.
F060F01A-AATo Vacuum, Crankcase
Ventilation Hoses
Inspect the surface of hoses for evidence of
heat and/or mechanical damage. Hard and
brittle rubber, cracking, tears, cuts, abrasions,
and excessive swelling indicate deterioration.
Particular attention should be paid to examine
those hose surfaces nearest to high heat
sources, such as the exhaust manifold.
Inspect the hose routing to assure that the
hoses do not come in contact with any heat
source, sharp edges or moving component
which might cause heat damage or mechanical
wear. Inspect all hose connections, such as
clamps and couplings, to make sure they are
secure, and that no leaks are present. Hoses
should be replaced immediately if there is any
evidence of deterioration or damage.
F070C01A-AATo Coolant
The coolant should be changed at the intervals
specified in the maintenance schedule.
F060E01A-AATo Timing belt
Inspect all parts related to the timing belt for
damage and deformation. Replace any dam-
aged parts immediately.
F060J01A-AAT
o Spark plugs
Make sure to install new spark plugs of the
correct heat range.
F060H01A-AATo Air cleaner filter
A Genuine Hyundai air cleaner filter is recom-
mended when filter is replaced.

7- 2 EMISSION CONTROL SYSTEMS
H010E01Y-AATEGR System (If installed)
This system helps reduce nitrogen oxides by
recirculating a part of the exhaust gas into the
engine, thereby reducing cylinder combustion
temperature, which results in lower output of
oxides of nitrogen.
H010D01A-AAT3. Exhaust Emission Control System
The Exhaust Emission Control System is a
highly effective system which controls exhaust
emissions while maintaining good vehicle
performace.
H010B01A-AAT1. Crankcase Emission Control
System
The positive crankcase ventilation system is
employed to prevent air pollution caused by
blow-by gases being emitted from the crank-
case. This system supplies filtered air to the
crankcase through the air intake hose. Inside
the crankcase, the fresh air mixes with blow-by
gases, which then pass through the PCV valve
and into the induction system.
H010A01L-AATEMISSION CONTROL SYSTEM
Your Hyundai is equipped with an emission
control system to meet all requirements of the
U.S. Environmental Protection Agency or Cali-
fornia Air Resources Board.
There are three emission control systems which
are as follows.
(1) Crankcase emission control system
(2) Evaporative emission control system
(3) Exhaust emission control system
In order to assure the proper function of the
emission control systems, it is recommended
that you have your car inspected and main-
tained by an authorized Hyundai dealer in ac-
cordance with the maintenance schedule in this
manual.
Caution for Inspection and Maintenance
Test (2.7 V6 Vehicle with Traction Control
System)
o To prevent the vehicle from misfiring
during dynamometer testing, discon-
nect the ABS connector located on the
left side of the engine compartment.
o For more information, see shop manual
(BR-67, Wheel Speed Sensor)
H010C02S-AAT
2. Evaporative Emission Control
(Including ORVR: Onboard Refueling
Vapor Recovery) System
The Evaporative Emission Control System is
designed to prevent fuel vapors from escaping
into the atmosphere.
(The ORVR system is designed to allow the
vapors from the fuel tank to be loaded into a
canister while refueling at the gas station, pre-
venting the escape of fuel vapors into the
atmosphere.)
Canister
Fuel vapors generated inside the fuel tank are
absorbed and stored in the onboard canister.
When the engine is running, the fuel vapors
absorbed in the canister are drawn into the
surge tank through the purge control solenoid
valve.
Purge Control Solenoid Valve (PCSV)
The purge control solenoid valve is controlled
by the Engine Control Module (ECM); when the
engine coolant temperature is low during idling,
the PCSV closes so that evaporated fuel is not
taken into the engine. After the engine warms-
up during ordinary driving, the PCSV opens to
introduce evaporated fuel to the engine.

VEHICLE SPECIFICATIONS 9- 3
J070A03Y-AATENGINE
ITEMS
Engine Type
Bore x Stroke. in. (mm)
Displacement. cc
Firing order
Spark plugType
Gap
Oil pan capacity us.qt. (lmp.qt., liter)
Oil filter capacity us.qt. (lmp.qt., liter)
Idle speed (rpm)
Ignition timing (Base)
Oil grade (API)2.4L (DOHC)
4-Cyl., In-line DOHC
3.41x 3.94 (86.5 x 100)
2,351
1 - 3 - 4 - 2
CHAMPION : RN10PYP4
NGK : PGR5C-11
4.2 (3.5, 4.0)
0.31 (0.26, 0.3)
700 ± 100
BTDC 5° ± 2°2.7L (V6)
6-Cyl., V-type DOHC
3.41 x 2.95 (86.7 x 75.0)
2,656
1 - 2 - 3 - 4 - 5 - 6
CHAMPION : RC10PYPB4
NGK : PFR5N-11
4.4 (3.68, 4.2)
0.31 (0.26, 0.3)
700 ± 100
BTDC 12° ± 5°
SPECIFICATIONS
0.039 - 0.043 in. (1.0 - 1.1 mm)
SH, SG or SG/CD and ABOVE multigrade and fuel-efficient oil