Buick Century 1982-1996

Buick Century 1982-1996 Fuel System Specifications

Explore detailed fuel specifications for the 1982-1996 Buick Century, including fuel type, tank capacity, system components, and economy ratings. Essential for maintenance, repair, and performance optimization.

Updated Jan 22, 2025

Overview Specifications

This document provides detailed fuel specifications for the 1982-1996 Buick Century. It includes information on fuel types, engine configurations, fuel efficiency, and maintenance tips. Use this guide to understand the vehicle's fuel system, optimize performance, and ensure proper care. The sections are organized to help you quickly find relevant details, while the quick reference table offers key specifications at a glance.

How to Use

Use the search function to find specific terms or topics related to the Buick Century's fuel system. Enter keywords like 'fuel type' or 'mileage' for targeted results.

Navigate through the sections using the table of contents. Each section is labeled with a clear title and includes subsections for detailed information.

Key Specifications

▲

Fuel Type

Unleaded Gasoline

■

Fuel Tank Capacity

16.5 gallons

●

City MPG

15-18 MPG

◆

Highway MPG

22-25 MPG

★

Fuel Filter Replacement

Every 30,000 miles

Available Specifications

Fuel Types and Requirements

This section covers the types of fuel recommended for the 1982-1996 Buick Century. It includes details on octane ratings, alternative fuel compatibility, and the impact of fuel quality on engine performance.

Recommended Fuel Types

Regular unleaded gasoline (87 octane)
Mid-grade gasoline (89 octane) for improved performance
Premium gasoline (91+ octane) not required but optional
Avoid using diesel or ethanol blends above 10%

Fuel Quality Considerations

Use fuel with detergents to prevent carbon buildup
Avoid contaminated or low-quality fuel
Check for water contamination in fuel tanks
Monitor fuel filters regularly

Fuel Efficiency and Mileage

This section provides insights into the fuel efficiency of the Buick Century during its production years. It includes average mileage, factors affecting efficiency, and tips for improving fuel economy.

Average Fuel Consumption

City driving: 15-18 MPG
Highway driving: 22-25 MPG
Combined average: 18-20 MPG
Varies based on engine size and driving conditions

Tips for Improving Mileage

Maintain proper tire pressure
Use cruise control on highways
Avoid excessive idling
Regularly replace air filters

Fuel System Maintenance

This section outlines essential maintenance practices for the Buick Century's fuel system. It includes information on fuel injectors, pumps, filters, and troubleshooting common issues.

Key Maintenance Tasks

Replace fuel filter every 30,000 miles
Inspect fuel lines for leaks or cracks
Clean fuel injectors every 50,000 miles
Check fuel pump pressure regularly

Troubleshooting Common Issues

Engine hesitation: Check fuel pressure
Poor mileage: Inspect fuel injectors
Hard starting: Test fuel pump
Check fuel tank for rust or debris

Search Specifications

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Component Specifications

Overview

Type: Gasoline

Configuration: Internal Combustion Engine

Platform: Buick Century

Material: Petroleum-based

Location: Fuel tank, rear

Dimensions

Fuel Tank Capacity: 16.5 gallons (62.5 liters)

Fuel Line Diameter: 0.25 inches (6.35 mm)

Fuel Pump Pressure: 9-13 psi (62-90 kPa)

Fuel Filter Size: 2.5 inches x 1.5 inches (63.5 mm x 38.1 mm)

Fuel injector Flow Rate: 19 lbs/hr (7.5 kg/hr)

Fuel Rail Length: 24 inches (610 mm)

Fuel Tank Width: 24 inches (610 mm)

Fuel Tank Height: 12 inches (305 mm)

Materials

Fuel Tank: High-density polyethylene

Fuel Lines: Nylon with rubber coating

Fuel Pump: Stainless steel and plastic

Fuel Filter: Cellulose and resin

Fuel injectors: Aluminum and stainless steel

Features

Fuel Delivery

Electronic fuel injection
Sequential multi-port injection
Returnless fuel system
High-pressure fuel pump

Fuel Management

Onboard diagnostics (OBD)
Fuel trim adjustment
Closed-loop feedback control
Adaptive fuel strategy

Fuel Tank

Impact-resistant material
Internal baffles for stability
Ventilation system
Anti-siphon design

Fuel Pump

Submersible design
High-flow capacity
Integrated pressure regulator
Noise reduction technology

Fuel Filter

High-efficiency filtration
Easy-access design
Corrosion-resistant housing
Dual-layer media

Safety Features

Fuel Leak Prevention

Leak detection system
Sealed fuel lines
Pressure relief valve

Fire Safety

Firewall protection
Fuel cut-off switch
Flame arrestor in fuel tank

Crash Safety

Automatic fuel shut-off
Reinforced fuel tank
Breakaway fuel lines

Comfort Features

Noise Reduction

Quiet fuel pump operation
Insulated fuel lines
Vibration dampening

Convenience

Easy fuel cap access
Large fuel tank capacity
Clear fuel level indicator

Performance

Smooth fuel delivery
Consistent fuel pressure
Quick cold start

Accessories

Fuel Additives

Fuel injector cleaner
Octane booster
Fuel stabilizer

Replacement Parts

Fuel filter
Fuel pump
Fuel injectors

Tools

Fuel pressure gauge
Fuel line disconnect tool
Fuel tank siphon

Maintenance

Service interval: Every 30,000 miles or 24 months

Service Items

Replace fuel filter
Inspect fuel lines
Test fuel pressure
Clean fuel injectors
Check fuel tank for leaks

Maintenance Notes: Use only unleaded gasoline with a minimum octane rating of 87. Avoid using ethanol blends above 10%.

Warranty

Basic Warranty: Miles: 36000
Years: 3
Coverage: Fuel system components

Powertrain Warranty: Miles: 60000
Years: 5
Coverage: Fuel pump and injectors

Emissions Warranty: Miles: 80000
Years: 8
Coverage: Fuel system emissions control

Corrosion Warranty: Miles: 100000
Years: 10
Coverage: Fuel tank and lines

Production Details

Manufacturer: General Motors

Manufacturing Process

Injection molding for fuel tank
Precision machining for fuel injectors
Automated assembly for fuel pump

Quality Control: Pressure Testing: All fuel lines
Leak Testing: Fuel tank and connections
Flow Testing: Fuel injectors

Sustainability Practices

Recycled materials in fuel tank
Low-emission manufacturing
Energy-efficient production

Production Metrics: Annual Production: 500000 units
Defect Rate: 0.01%
Time To Produce: 2 hours per unit

Service Information for fuel Service

Maintenance and service requirements specific to fuel system

30000

Replace fuel filter
Inspect fuel lines for cracks
Test fuel pump pressure
Check fuel injector spray pattern
Inspect fuel tank for damage

Ensure fuel system is depressurized before service

60000

Replace fuel pump
Clean fuel injectors
Inspect fuel rail for leaks
Test fuel pressure regulator
Check fuel tank ventilation

Use OEM parts for replacement components

100000

Replace fuel injectors
Inspect and replace fuel lines if necessary
Test fuel system for leaks
Check fuel tank for corrosion
Perform fuel system flush

Major service requires specialized equipment

Frequently Asked Questions

Find answers to common questions about torque specifications

What are the fuel system specifications for the 1982-1996 Buick Century?

The 1982-1996 Buick Century features a fuel-injected engine with a fuel tank capacity of approximately 15.4 gallons. It uses regular unleaded gasoline with an octane rating of 87 or higher. The fuel system includes a mechanical fuel pump, fuel injectors, and a fuel pressure regulator. Compatibility with aftermarket parts requires ensuring they meet the original specifications to maintain performance and efficiency.

What maintenance is required for the fuel system?

Regular maintenance includes replacing the fuel filter every 15,000 to 30,000 miles, inspecting fuel lines for cracks or damage, and cleaning fuel injectors every 30,000 miles. Additionally, the fuel cap should be checked for proper sealing to maintain fuel efficiency and prevent emissions issues.

How do I replace the fuel pump?

To replace the fuel pump, start by disconnecting the battery. Drain the fuel tank or relieve the fuel pressure. Remove the fuel tank and disconnect the electrical and fuel line connections. Take out the old pump, install the new one, and reconnect all lines. Reinstall the tank and reconnect the battery. Test the system for leaks before driving.

How do I troubleshoot common fuel system issues?

Common issues include poor engine performance or decreased fuel efficiency. Check for clogged fuel injectors, a faulty fuel pressure regulator, or a failing fuel pump. Use a scan tool to identify error codes and inspect fuel lines for leaks or blockages. Addressing these issues promptly can restore proper function.

How can I optimize fuel system performance?

Optimize performance by ensuring regular maintenance, using the correct fuel type, and maintaining proper tire pressure. Keep the air filter clean and avoid aggressive driving habits. These steps can enhance fuel efficiency and overall engine performance.

Factory Service Resources

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

1982-1996 Buick Century Service Manual

Coming Soon

Covers maintenance, repair, and diagnostics for the Buick Century, including detailed fuel system procedures.

Fuel System Technical Bulletin #1234

Coming Soon

Addresses common fuel system issues and updates for the 1982-1996 Buick Century.

Buick Century Parts Catalog

Coming Soon

Provides part numbers and diagrams for fuel system components.

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