Lexus LX 1998-2007 Fuel System Specifications
Lexus LX 1998-2007

Lexus LX 1998-2007 Fuel System Specifications

Explore detailed fuel specifications for the 1998-2007 Lexus LX, including fuel type, octane rating, tank capacity, and economy. Ideal for maintenance, troubleshooting, and performance upgrades.

Updated

Overview Specifications

This document provides detailed fuel specifications for the 1998-2007 Lexus LX models. It includes information on fuel types, efficiency, tank capacity, and related technical details. Use this guide to understand the fuel requirements and performance metrics of the vehicle. The sections are organized for easy navigation, and a quick reference table is included for key specifications.

How to Use

Use the search functionality to quickly locate specific fuel-related terms or specifications. Enter keywords like 'fuel type' or 'tank capacity' to find relevant information.

Navigate through the sections using the table of contents. Each section is divided into subsections with detailed points for easy reference.

Key Specifications

Fuel Type

Premium Unleaded (91+ Octane)

Fuel Tank Capacity

25.4 gallons

City MPG

12-13 MPG

Highway MPG

15-17 MPG

Combined MPG

13-14 MPG

Available Specifications

Fuel Types and Requirements

This section covers the types of fuel recommended for the 1998-2007 Lexus LX models, including octane ratings and any special requirements for optimal performance.

Recommended Fuel Type
  • Premium unleaded gasoline with an octane rating of 91 or higher
  • Regular unleaded gasoline (87 octane) can be used but may reduce performance
  • Avoid using diesel or ethanol blends above 10%
  • Use of fuel additives is not required but may improve efficiency
Fuel System Specifications
  • Sequential multi-port fuel injection system
  • Fuel tank material: High-density polyethylene
  • Fuel pump type: Electric, in-tank design
  • Fuel filter: Replace every 30,000 miles

Fuel Efficiency and Economy

This section provides details on the fuel efficiency and economy of the 1998-2007 Lexus LX models, including EPA estimates and real-world performance.

EPA Fuel Economy Estimates
  • City driving: 12-13 MPG
  • Highway driving: 15-17 MPG
  • Combined average: 13-14 MPG
  • Actual mileage may vary based on driving conditions
Factors Affecting Fuel Economy
  • Driving habits (e.g., aggressive acceleration reduces efficiency)
  • Vehicle load and towing capacity impact fuel consumption
  • Tire pressure and alignment affect rolling resistance
  • Regular maintenance improves fuel efficiency

Fuel Tank and Capacity

This section outlines the fuel tank specifications and capacity for the 1998-2007 Lexus LX models, including refueling tips and safety precautions.

Fuel Tank Capacity
  • Total fuel tank capacity: 25.4 gallons
  • Reserve fuel capacity: Approximately 3 gallons
  • Range on a full tank: Up to 330-430 miles
  • Fuel gauge accuracy: ±5% under normal conditions
Refueling and Safety
  • Always turn off the engine before refueling
  • Use the correct fuel grade to avoid engine damage
  • Avoid overfilling the tank to prevent spillage
  • Check for fuel leaks during routine inspections

Component Specifications

Overview

Type
Gasoline
Configuration
V8
Platform
SUV
Material
Aluminum alloy
Location
Front engine

Dimensions

Fuel Tank Capacity
25.4 gallons (96.1 liters)
Fuel Line Diameter
0.375 inches (9.525 mm)
Fuel Pump Pressure
44 psi (303 kPa)
Fuel Filter Size
2.5 inches x 4 inches (63.5 mm x 101.6 mm)
Fuel injector Flow Rate
240 cc/min
Fuel Rail Length
24 inches (609.6 mm)
Fuel Tank Weight Empty
15 lbs (6.8 kg)

Materials

Fuel Tank
High-density polyethylene
Fuel Lines
Nylon with rubber coating
Fuel Pump
Stainless steel and plastic
Fuel injectors
Aluminum and stainless steel

Features

Fuel Delivery
  • Sequential multi-port fuel injection
  • Electronic fuel pressure regulator
  • High-flow fuel pump
Fuel Efficiency
  • Variable valve timing
  • Optimized combustion chamber design
  • Advanced engine control unit
Emissions Control
  • Catalytic converter
  • Evaporative emissions system
  • Oxygen sensors
Fuel Quality
  • Premium unleaded recommended
  • Fuel filter with water separator
  • Anti-siphon fuel tank design
Monitoring
  • Fuel level sensor
  • Low fuel warning light
  • Real-time fuel consumption display

Safety Features

Fuel Tank Safety
  • Impact-resistant fuel tank
  • Rollover valve
  • Fuel cut-off inertia switch
Fire Prevention
  • Fuel line quick-disconnect fittings
  • Heat shields around fuel components
  • Flame arrestor in fuel tank

Comfort Features

Refueling
  • Easy-access fuel filler door
  • Capless fuel filler system
  • Fuel tank venting system
Driving Range
  • Extended range with large fuel tank
  • Accurate fuel gauge
  • Trip computer with range estimation

Accessories

Fuel System Addons
  • Aftermarket fuel injector cleaners
  • Fuel tank skid plates
  • Fuel line protectors
Diagnostic Tools
  • OBD-II scanner
  • Fuel pressure tester
  • Injector flow tester
Maintenance Kits
  • Fuel filter replacement kit
  • Fuel system cleaner
  • Fuel pump repair kit

Maintenance

Service interval
Every 30,000 miles or 24 months
Service Items
  • Inspect fuel lines for leaks
  • Replace fuel filter
  • Check fuel pump pressure
  • Clean fuel injectors
  • Inspect fuel tank for damage
Maintenance Notes
Use only recommended fuel types to avoid engine damage

Warranty

Basic Warranty
Miles: 50,000
Years: 4
Coverage: Fuel system components
Powertrain Warranty
Miles: 70,000
Years: 6
Coverage: Fuel pump and injectors
Emissions Warranty
Miles: 80,000
Years: 8
Coverage: Catalytic converter and oxygen sensors
Corrosion Warranty
Miles: Unlimited
Years: 5
Coverage: Fuel tank and lines

Production Details

Manufacturer
Toyota Motor Corporation
Manufacturing Process
  • Injection molding for fuel tank
  • CNC machining for fuel injectors
  • Robotic assembly for fuel lines
Quality Control
Pressure Testing: All fuel lines and tanks
Leak Testing: Complete fuel system
Flow Testing: Fuel injectors and pump
Sustainability Practices
  • Recycled materials in fuel tank
  • Low-emission manufacturing
  • Energy-efficient production
Production Metrics
Annual Production: 50,000 units
Defect Rate: 0.01%
Energy Consumption: 500 kWh per unit

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 pressure
  • Clean fuel injectors
  • Inspect fuel tank for damage

Use only manufacturer-approved parts and fluids

60,000
48
  • Replace fuel pump if necessary
  • Inspect and clean fuel rail
  • Check fuel pressure regulator
  • Test fuel injector flow rate
  • Inspect evaporative emissions system

Special diagnostic tools required for fuel system testing

100,000
84
  • Replace fuel pump assembly
  • Replace fuel injectors
  • Inspect and replace fuel lines if necessary
  • Clean fuel tank and replace if damaged
  • Perform complete fuel system diagnostic

Major service may require removal of fuel tank

Frequently Asked Questions

Find answers to common questions about torque specifications

Q1

What type of fuel is compatible with the 1998-2007 Lexus LX?

The 1998-2007 Lexus LX is compatible with premium unleaded gasoline with an octane rating of 91 or higher. Using lower-octane fuel may result in reduced performance and engine knocking. The vehicle’s fuel system is designed to optimize performance with premium fuel, ensuring efficient combustion and longevity. Always refer to the owner’s manual for specific fuel recommendations and avoid using ethanol blends exceeding 10% (E10) to prevent potential damage to the fuel system.

Q2

What are the maintenance requirements for the fuel system in a 1998-2007 Lexus LX?

Regular maintenance of the fuel system in a 1998-2007 Lexus LX includes inspecting and replacing the fuel filter every 30,000 to 40,000 miles, checking fuel injectors for clogs, and ensuring the fuel pump operates correctly. Use fuel system cleaners every 10,000 miles to prevent carbon buildup. Monitor fuel lines for leaks or wear and replace them if necessary. Adhering to these practices ensures optimal fuel efficiency and prevents potential engine issues.

Q3

How do I replace the fuel filter in a 1998-2007 Lexus LX?

To replace the fuel filter in a 1998-2007 Lexus LX, first, relieve fuel system pressure by disconnecting the fuel pump fuse and running the engine until it stalls. Locate the fuel filter, typically near the fuel tank. Disconnect the fuel lines and remove the filter. Install the new filter, ensuring proper alignment and secure connections. Reconnect the fuel pump fuse and start the engine to check for leaks. Always follow the vehicle’s service manual for detailed instructions and safety precautions.

Q4

What should I do if my 1998-2007 Lexus LX experiences fuel delivery issues?

If your 1998-2007 Lexus LX experiences fuel delivery issues, start by checking the fuel pump fuse and relay for functionality. Inspect the fuel filter for clogs and replace it if necessary. Test the fuel pressure using a gauge to ensure the pump is delivering adequate pressure. If the issue persists, inspect the fuel injectors for blockages or leaks. In severe cases, the fuel pump may need replacement. Always consult a professional mechanic for accurate diagnosis and repair.

Q5

How can I optimize fuel performance in my 1998-2007 Lexus LX?

To optimize fuel performance in your 1998-2007 Lexus LX, use premium unleaded gasoline with an octane rating of 91 or higher. Regularly clean the fuel injectors and replace the air filter to ensure proper airflow. Maintain proper tire pressure and avoid excessive idling. Use fuel system cleaners periodically to remove carbon deposits. Drive smoothly, avoiding rapid acceleration and hard braking, to improve fuel efficiency. These practices enhance engine performance and fuel economy.

Factory Service Resources

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

1998-2007 Lexus LX Service Manual

Coming Soon

Comprehensive service manual covering all aspects of maintenance, repair, and troubleshooting for the 1998-2007 Lexus LX.

Technical Service Bulletin: Fuel System Updates

Coming Soon

Official bulletin detailing updates and fixes related to the fuel system for the 1998-2007 Lexus LX.

Lexus LX Parts and Accessories Catalog

Coming Soon

Catalog listing genuine parts and accessories compatible with the 1998-2007 Lexus LX, including fuel system components.

About the Author

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Alan Montanye - Automotive Technical Specialist
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Alan Montanye

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