Hyundai XG350 2002-2005 Fuel System Specifications
Hyundai XG350 2002-2005

Hyundai XG350 2002-2005 Fuel System Specifications

Explore comprehensive fuel specifications for the 2002-2005 Hyundai XG350, including fuel type, tank capacity, economy, and emission standards. Essential for maintenance, repair, and performance optimization.

Updated

Overview Specifications

This document provides detailed fuel specifications for the 2002-2005 Hyundai XG350. It includes information on fuel type, fuel economy, fuel system components, and maintenance tips. Use this guide to understand the vehicle's fuel requirements and optimize its performance. Whether you're a car enthusiast or a mechanic, this resource will help you navigate the technical aspects of the Hyundai XG350's fuel system.

How to Use

Use the search bar to quickly find specific fuel-related terms or specifications. Enter keywords like 'fuel type' or 'mpg' for instant results.

Browse through the sections by clicking on the titles in the table of contents. Each section is organized into subsections for easy access to detailed information.

Key Specifications

Fuel Type

Unleaded Gasoline

Fuel Tank Capacity

18.5 gallons

City MPG

18

Highway MPG

26

Combined MPG

21

Available Specifications

Fuel Type and Requirements

This section covers the type of fuel recommended for the 2002-2005 Hyundai XG350 and the reasons behind these recommendations. It also includes information on fuel quality and additives.

Recommended Fuel Type
  • Use unleaded gasoline with an octane rating of 87 or higher
  • Premium gasoline is not required but can enhance performance
  • Avoid using diesel or ethanol blends above 10%
  • Using lower octane fuel may cause engine knocking
Fuel Additives
  • Use fuel injector cleaners every 3,000 miles
  • Avoid additives containing methanol or silicone
  • Additives can improve fuel efficiency and engine performance
  • Consult the owner’s manual for approved products

Fuel Economy

This section provides detailed information on the Hyundai XG350's fuel efficiency, including city, highway, and combined MPG ratings. It also offers tips for improving fuel economy.

MPG Ratings
  • City MPG: 18
  • Highway MPG: 26
  • Combined MPG: 21
  • Based on EPA estimates for the 2002-2005 models
Improving Fuel Economy
  • Maintain proper tire pressure
  • Avoid aggressive acceleration and braking
  • Regularly replace air filters
  • Use cruise control on highways

Fuel System Components

This section explains the key components of the Hyundai XG350's fuel system, including the fuel pump, injectors, and tank. It also covers maintenance and troubleshooting tips.

Fuel Pump
  • Located inside the fuel tank
  • Delivers fuel to the engine at high pressure
  • Signs of failure: engine sputtering or no start
  • Replace every 100,000 miles or as needed
Fuel Injectors
  • Spray fuel into the engine’s combustion chamber
  • Prone to clogging from dirty fuel
  • Clean or replace every 60,000 miles
  • Symptoms of clogging: poor acceleration and rough idle

Component Specifications

Overview

Type
Gasoline
Octane Rating
87 (Regular)
Fuel System
Multi-Point Fuel Injection (MPFI)
Tank Capacity
18.5 gallons (70 liters)
Fuel Economy City
18 mpg (13.1 L/100km)
Fuel Economy Highway
26 mpg (9.0 L/100km)

Dimensions

Tank Length
36 inches (91.4 cm)
Tank Width
24 inches (61 cm)
Tank Height
12 inches (30.5 cm)
Filler Neck Diameter
1.5 inches (3.8 cm)
Fuel Line Diameter
0.5 inches (1.27 cm)
Fuel Pump Pressure
45 psi (310 kPa)
Fuel Filter Size
2.5 inches x 1.5 inches (6.35 cm x 3.81 cm)

Materials

Tank
High-density polyethylene (HDPE)
Fuel Lines
Nitrile rubber with steel braiding
Filler Neck
Stainless steel
Fuel Pump
Thermoplastic with copper windings

Features

Fuel Delivery
  • Multi-Point Fuel Injection
  • Returnless fuel system
  • Electronic fuel pressure regulator
Efficiency
  • Oxygen sensor feedback
  • Closed-loop fuel control
  • Variable intake manifold
Safety
  • Rollover valve
  • Fuel tank impact sensor
  • Evaporative emissions control
Monitoring
  • Low fuel warning light
  • Fuel level sensor
  • On-board diagnostics (OBD-II)

Safety Features

Fire Prevention
  • Fuel cut-off switch
  • Impact-resistant fuel tank
  • Flame arrestor in filler neck
Emissions
  • Evaporative emissions system
  • Catalytic converter
  • Positive crankcase ventilation (PCV)

Comfort Features

Driving
  • Smooth fuel delivery
  • Consistent engine performance
  • Minimal fuel odor
Refueling
  • Easy-access filler neck
  • Quick-release fuel cap
  • Clear fuel level indicator

Accessories

Optional
  • Fuel system cleaner
  • Fuel additive injector
  • Fuel tank liner
Replacement
  • Fuel filter
  • Fuel pump assembly
  • Fuel level sensor
Maintenance
  • Fuel injector cleaner
  • Fuel stabilizer
  • Fuel line conditioner

Maintenance

Service interval
Every 30,000 miles (48,280 km)
Service Items
  • Inspect fuel lines for leaks
  • Replace fuel filter
  • Check fuel pump pressure
  • Clean fuel injectors
  • Inspect evaporative emissions system
Notes
Use only unleaded gasoline with the recommended octane rating

Warranty

Basic
Miles: 60,000
Years: 5
Coverage: Fuel system components
Emissions
Miles: 80,000
Years: 8
Coverage: Emissions-related fuel components
Corrosion
Miles: 100,000
Years: 10
Coverage: Fuel tank corrosion
Terms
Warranty covers defects in materials or workmanship under normal use

Production Details

Manufacturer
Hyundai Motor Company
Manufacturing Process
  • Injection molding for fuel tank
  • Precision machining for fuel pump
  • Robotic assembly for fuel lines
Quality Control
Pressure Testing: Fuel tank tested at 10 psi (69 kPa)
Leak Testing: Fuel system checked for leaks
Performance Testing: Fuel pump and injectors tested for flow rate
Sustainability
  • Recyclable fuel tank materials
  • Low-emission production process
  • Reduced volatile organic compounds (VOCs)
Production Metrics
Annual Production: 500,000 units
Defect Rate: < 0.1%
Energy Efficiency: 95%

Service Information for fuel Service

Maintenance and service requirements specific to the fuel system

30,000
24
  • Inspect fuel lines and connections
  • Replace fuel filter
  • Check fuel pump operation
  • Test fuel pressure
  • Inspect evaporative emissions system

Use only OEM or equivalent fuel filters

60,000
48
  • Clean fuel injectors
  • Inspect fuel tank for damage
  • Check fuel level sensor accuracy
  • Test fuel system for leaks
  • Replace fuel pump if necessary

Perform fuel system cleaning for optimal performance

100,000
84
  • Replace fuel pump assembly
  • Inspect and replace fuel lines if needed
  • Check and replace fuel pressure regulator
  • Test evaporative emissions system for leaks
  • Perform complete fuel system inspection

Consider replacing all fuel system components for preventive maintenance

Frequently Asked Questions

Find answers to common questions about torque specifications

Q1

What type of fuel is compatible with the 2002-2005 Hyundai XG350?

The 2002-2005 Hyundai XG350 requires unleaded gasoline with an octane rating of 87 or higher. Using lower octane fuel may result in engine knocking and reduced performance. The fuel tank capacity is 18.5 gallons, and the vehicle is designed for optimal performance with standard unleaded fuel. Avoid using diesel or ethanol blends with more than 10% ethanol (E10) to prevent potential engine damage.

Q2

What are the maintenance requirements for the fuel system in the Hyundai XG350?

Regular maintenance for the fuel system includes inspecting the fuel filter every 30,000 miles and replacing it if necessary. The fuel injectors should be cleaned every 60,000 miles to ensure optimal performance. Additionally, check the fuel lines for leaks or wear during routine servicing. Use high-quality fuel additives periodically to keep the fuel system clean and maintain engine efficiency.

Q3

How do I replace the fuel filter in a 2002-2005 Hyundai XG350?

To replace the fuel filter, first, relieve the fuel system pressure by disconnecting the fuel pump fuse and running the engine until it stalls. Locate the fuel filter under the vehicle near the fuel tank. Disconnect the fuel lines and remove the old filter. Install the new filter, ensuring the flow arrow points toward the engine. Reconnect the fuel lines, reinstall the fuel pump fuse, and start the engine to check for leaks.

Q4

What should I do if my Hyundai XG350 has poor fuel efficiency?

If your XG350 has poor fuel efficiency, check for clogged fuel injectors, a dirty air filter, or low tire pressure. Inspect the oxygen sensors and spark plugs for proper functioning. Ensure the fuel cap is tightly sealed to prevent evaporative losses. If the issue persists, have the engine control module (ECM) scanned for error codes and address any underlying mechanical or electrical issues.

Q5

How can I optimize the fuel performance of my Hyundai XG350?

To optimize fuel performance, use high-quality unleaded gasoline and keep the fuel system clean by using additives. Maintain proper tire pressure and drive at consistent speeds to reduce fuel consumption. Regularly service the air filter, spark plugs, and oxygen sensors. Avoid excessive idling and aggressive driving habits, as these can significantly impact fuel efficiency.

Factory Service Resources

Access official service manuals, technical documents, and repair guides. These resources provide detailed procedures, specifications, and diagrams directly from the manufacturer.

Hyundai XG350 Service Manual

Coming Soon

Detailed service manual covering fuel system maintenance, troubleshooting, and repair procedures for the 2002-2005 Hyundai XG350.

Technical Service Bulletin: Fuel System Updates

Coming Soon

Bulletin outlining fuel system updates and common issues for the 2002-2005 Hyundai XG350, including recommended fixes and part replacements.

Hyundai XG350 Parts Catalog

Coming Soon

Comprehensive catalog of fuel system components and accessories for the 2002-2005 Hyundai XG350, including part numbers and compatibility details.

About the Author

Expert automotive knowledge and experience

Alan Montanye - Automotive Technical Specialist
ASE

Alan Montanye

Automotive Technical Specialist

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