Subaru Subaru Impreza 1992-2000 Fuel System Specifications
Subaru Subaru Impreza 1992-2000

Subaru Subaru Impreza 1992-2000 Fuel System Specifications

Detailed fuel system specifications for 1992-2000 Subaru Impreza, including fuel type, tank capacity, pump pressure, and injector flow rates. Essential for maintenance, tuning, and troubleshooting.

Updated

Overview Specifications

This document provides detailed fuel specifications for the 1992-2000 Subaru Impreza. It includes information on fuel types, consumption rates, tank capacity, and emission standards. Use this guide to understand the technical aspects of the vehicle's fuel system, optimize performance, and ensure compliance with environmental regulations. The document is organized into sections for easy navigation and includes a quick reference table for key specifications.

How to Use

Use the search functionality to find specific terms or phrases within the document. Enter keywords related to fuel specifications, such as 'octane rating' or 'fuel economy,' to quickly locate relevant information.

Navigate through the document using the section titles and subsections. Each major section focuses on a specific aspect of the fuel system, with detailed points listed under each subsection for easy reference.

Key Specifications

Fuel Type

87+ Octane Unleaded

Fuel Tank Capacity

15.9 gallons

City MPG

20-22 MPG

Highway MPG

26-28 MPG

Fuel System

Multi-port Injection

Available Specifications

Fuel Types and Requirements

This section outlines the recommended fuel types for the 1992-2000 Subaru Impreza, including octane ratings and any specific requirements for optimal performance. It also covers the impact of using alternative fuels or additives.

Recommended Fuel Types
  • Regular unleaded gasoline with an octane rating of 87 or higher
  • Premium unleaded gasoline (91+ octane) recommended for high-performance models
  • Avoid using diesel or ethanol blends above 10% (E10)
  • Use of fuel additives for cleaning injectors is optional but not required
Alternative Fuels
  • Not compatible with E85 ethanol blends
  • Biodiesel is not supported
  • Propane or natural gas conversions are not recommended
  • Check local regulations for any restrictions on fuel types

Fuel Economy and Consumption

This section provides detailed information on the fuel economy of the 1992-2000 Subaru Impreza, including city, highway, and combined MPG ratings. It also discusses factors that may affect fuel consumption.

Fuel Economy Ratings
  • City MPG: 20-22 MPG
  • Highway MPG: 26-28 MPG
  • Combined MPG: 23-25 MPG
  • Actual mileage may vary based on driving conditions
Factors Affecting Consumption
  • Driving habits (e.g., aggressive acceleration reduces efficiency)
  • Vehicle load and cargo weight
  • Tire pressure and alignment
  • Environmental conditions (e.g., cold weather)

Fuel Tank and System Specifications

This section covers the technical specifications of the fuel tank and system, including capacity, materials, and maintenance requirements. It also includes information on the fuel delivery system and filters.

Fuel Tank Capacity
  • Standard fuel tank capacity: 15.9 gallons (60 liters)
  • Reserve capacity: approximately 2.5 gallons (9.5 liters)
  • Material: high-density polyethylene
  • Designed for durability and corrosion resistance
Fuel Delivery System
  • Multi-port fuel injection system
  • Fuel pump pressure: 36-43 psi
  • Fuel filter replacement interval: every 30,000 miles
  • Regular inspection of fuel lines for leaks or wear

Component Specifications

Overview

Type
Gasoline
Octane Rating
87 (regular), 91 (premium)
Fuel System
Multi-point fuel injection
Tank Capacity
15.9 gallons (60.2 liters)
Emission Standard
Tier 1 (US)

Dimensions

Tank Length
34.5 inches (87.6 cm)
Tank Width
22.8 inches (57.9 cm)
Tank Height
12.4 inches (31.5 cm)
Filler Neck Diameter
1.5 inches (3.8 cm)
Fuel Line Diameter
0.375 inches (9.5 mm)
Fuel Pump Height
6.2 inches (15.7 cm)
Fuel Filter Length
4.7 inches (11.9 cm)

Materials

Tank Material
High-density polyethylene
Fuel Lines
Nitrile rubber with steel reinforcement
Filler Neck
Galvanized steel
Fuel Pump
Thermoplastic housing with stainless steel internals

Features

Fuel Delivery
  • Multi-point fuel injection
  • Electric fuel pump
  • Pressure regulator
  • Returnless fuel system
Tank Features
  • Internal baffles for fuel slosh reduction
  • Integrated fuel level sensor
  • Ventilation system with charcoal canister
  • Anti-siphon filler neck design
Emission Control
  • Evaporative emission control system
  • Oxygen sensors
  • Catalytic converter
  • PCV system
Performance
  • Optimized fuel flow rate
  • High-pressure fuel rail
  • Cold-start enrichment system
  • Altitude compensation
Safety
  • Rollover valve
  • Impact-resistant tank design
  • Leak detection system
  • Fuel cut-off inertia switch

Safety Features

Tank Safety
  • Impact-resistant construction
  • Rollover protection valve
  • Flame arrestor in filler neck
Leak Prevention
  • Double-walled fuel lines
  • Leak detection system
  • Automatic fuel shut-off
Fire Prevention
  • Fuel cut-off inertia switch
  • Thermal protection for fuel lines
  • Flame-resistant tank material

Comfort Features

Refueling
  • Easy-access filler neck
  • Automatic fuel nozzle shut-off
  • Fuel level indicator with low fuel warning
Driving
  • Smooth fuel delivery
  • Altitude compensation
  • Cold-start optimization
Maintenance
  • Serviceable fuel filter
  • Accessible fuel pump
  • Diagnostic port for fuel system

Accessories

Performance
  • High-flow fuel pump
  • Performance fuel injectors
  • Fuel pressure regulator
Maintenance
  • Fuel system cleaner
  • Fuel filter replacement kit
  • Fuel pump repair kit
Diagnostics
  • Fuel pressure gauge
  • OBD-II scanner
  • Fuel system diagnostic kit

Maintenance

Service interval
Every 30,000 miles or 24 months
Service Items
  • Fuel filter replacement
  • Fuel system inspection
  • Fuel injector cleaning
  • Fuel pump performance check
  • Evaporative system check
Maintenance Notes
Use only recommended fuel types and additives. Regularly inspect for leaks and corrosion.

Warranty

Fuel Tank Warranty
Miles: 60,000
Years: 5
Coverage: Manufacturing defects
Fuel Pump Warranty
Miles: 36,000
Years: 3
Coverage: Electrical and mechanical failure
Fuel System Warranty
Miles: 50,000
Years: 4
Coverage: Leaks and component failure
Emission System Warranty
Miles: 80,000
Years: 8
Coverage: Federal emissions components

Production Details

Manufacturer
Subaru Corporation
Manufacturing Process
  • Injection molding for fuel tank
  • Robotic assembly for fuel lines
  • Precision machining for fuel injectors
Quality Control
Pressure Testing: 150 psi tank pressure test
Leak Testing: Helium leak detection
Material Testing: UV and chemical resistance testing
Sustainability Practices
  • Recycled materials in tank construction
  • Low-VOC fuel system components
  • Emission-reducing manufacturing processes
Production Metrics
Annual Production: 500,000 units
Defect Rate: 0.02%
Recycling Rate: 95%

Service Information for fuel Service

Maintenance and service requirements specific to the fuel system

30,000
24
  • Replace fuel filter
  • Inspect fuel lines for leaks
  • Check fuel pump pressure
  • Clean fuel injectors
  • Inspect fuel tank for damage

Use only Subaru-approved fuel system cleaners

60,000
48
  • Replace fuel pump if necessary
  • Inspect and clean fuel tank
  • Check evaporative emission system
  • Test fuel pressure regulator
  • Inspect fuel filler neck

Special tools required for fuel pump replacement

100,000
84
  • Complete fuel system flush
  • Replace all fuel lines
  • Inspect and replace fuel injectors if needed
  • Test fuel system for leaks
  • Replace fuel tank if damaged

Major service requires specialized equipment and training

Frequently Asked Questions

Find answers to common questions about torque specifications

Q1

What type of fuel is compatible with the 1992-2000 Subaru Impreza?

The 1992-2000 Subaru Impreza is designed to run on unleaded gasoline with an octane rating of 87 or higher. Using lower octane fuel may cause engine knocking and reduce performance. For optimal performance, avoid using ethanol blends above 10% (E10) as older models may not be compatible with higher ethanol concentrations.

Q2

What are the maintenance requirements for the fuel system in a 1992-2000 Subaru Impreza?

Regular maintenance includes inspecting and replacing the fuel filter every 30,000 miles, checking fuel lines for leaks or wear, and ensuring the fuel injectors are clean. Use fuel system cleaners periodically to prevent buildup. Additionally, monitor the fuel pump for proper operation and replace it if you notice reduced fuel efficiency or engine stalling.

Q3

How do I replace the fuel filter in a 1992-2000 Subaru Impreza?

To replace the fuel filter, 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 old filter. Install the new filter, ensuring the flow direction matches the arrows on the filter. Reconnect the fuel lines and test for leaks.

Q4

What should I do if my 1992-2000 Subaru Impreza has poor fuel economy?

Poor fuel economy can result from clogged fuel injectors, a dirty air filter, or a malfunctioning oxygen sensor. Start by inspecting and cleaning the air filter and fuel injectors. Check the oxygen sensor for proper operation and replace it if necessary. Also, ensure the tires are properly inflated and the engine is tuned to factory specifications.

Q5

How can I optimize the fuel performance of my 1992-2000 Subaru Impreza?

To optimize fuel performance, use high-quality fuel with the recommended octane rating. Regularly replace the air filter, spark plugs, and fuel filter. Keep the engine properly tuned and ensure the tires are inflated to the correct pressure. Avoid excessive idling and aggressive driving, as these habits can reduce 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.

1992-2000 Subaru Impreza Service Manual

Coming Soon

Comprehensive guide covering maintenance, repairs, and technical specifications for the 1992-2000 Subaru Impreza.

Subaru Technical Service Bulletin: Fuel System Updates

Coming Soon

Details updates and fixes for common fuel system issues in 1992-2000 Subaru Impreza models.

Subaru Impreza Parts and Accessories Catalog

Coming Soon

Catalog listing OEM and aftermarket parts for the 1992-2000 Subaru Impreza, 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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