BMW Z3 1995-2002

BMW Z3 1995-2002 Fuel System Specifications

Detailed technical specifications and maintenance guidelines for the 1995-2002 BMW Z3 fuel system, including fuel pump, injectors, pressure standards, and troubleshooting tips.

Updated Oct 24, 2023

Overview Specifications

Comprehensive description of the fuel specifications for the 1995-2002 BMW Z3, including key features, measurements, and technical details

How to Use

Use the search function to locate specific fuel specifications by entering keywords such as 'octane rating', 'fuel capacity', or 'emission standards'.

Navigate through the fuel documentation sections using the table of contents or by scrolling through the document. Each section is clearly labeled for easy access.

Key Specifications

Fuel Tank Capacity

14.5 gallons (55 liters)

Octane Rating

91 RON (min)

Fuel Pump Pressure

3.5 bar (50.8 psi)

CO2 Emissions

220 g/km

Fuel Consumption

9.5 L/100 km

Available Specifications

Fuel Requirements

Detailed information on the type of fuel required for optimal performance and compliance with emission standards

Octane Rating

Minimum octane rating: 91 RON (Research Octane Number)
Recommended octane rating: 95 RON for enhanced performance
Do not use fuel with an octane rating below 87 RON
Higher octane fuel improves engine efficiency and reduces knocking

Fuel Type

Use only unleaded gasoline
Leaded fuel is strictly prohibited as it damages the catalytic converter
Ethanol blends up to 10% (E10) are acceptable
Avoid using diesel or any other non-gasoline fuels

Note: Using fuel with higher ethanol content than recommended may void the warranty.

Fuel System Specifications

Technical details of the fuel system components and their specifications

Fuel Tank Capacity

Total fuel tank capacity: 14.5 gallons (55 liters)
Reserve fuel capacity: 2.1 gallons (8 liters)
Fuel tank material: High-density polyethylene
Fuel tank design: Dual-chamber for improved safety

Fuel Pump

Fuel pump type: Electric in-tank pump
Fuel pump pressure: 3.5 bar (50.8 psi)
Fuel flow rate: 120 liters per hour
Fuel pump voltage: 12V DC

Note: Ensure the fuel pump is replaced with an OEM or equivalent part to maintain performance.

Emission Standards

Information on the emission standards and fuel-related environmental compliance

Emission Compliance

Complies with Euro 2 emission standards
Equipped with a catalytic converter for reduced emissions
Oxygen sensor ensures optimal air-fuel ratio
Evaporative emission control system minimizes fuel vapor release

Environmental Impact

CO2 emissions: 220 g/km (combined cycle)
NOx emissions: 0.15 g/km
Particulate matter: 0.01 g/km
Fuel consumption: 9.5 L/100 km (combined cycle)

Note: Regular maintenance of the emission system is required to maintain compliance.

Search Specifications

Search by specification name, value, or description

Component Specifications

Fuel Type

Recommended Fuel: Premium unleaded gasoline (91 octane or higher)

Minimum Octane Rating: 89 AKI (Anti-Knock Index)

Ethanol Content: Up to 10% ethanol (E10)

Notes: Using lower octane fuel may cause engine knocking and reduced performance

Fuel Tank

Capacity: 14.5 gallons (55 liters)

Material: High-density polyethylene

Part Number: 16111183894

Pressure Rating: 3.0 psi (20.7 kPa)

Notes: Includes integrated fuel pump and level sensor

Fuel Pump

Type: Electric in-tank fuel pump

Flow Rate: 120 liters per hour (31.7 gallons per hour)

Operating Pressure: 3.5 bar (50.8 psi)

Part Number: 16141183895

Voltage: 12V DC

Notes: Includes fuel filter and pressure regulator

Fuel Filter

Type: In-line cartridge filter

Part Number: 13321437363

Replacement interval: Every 30,000 miles (48,280 km)

Micron Rating: 10 microns

Notes: Located under the vehicle near the fuel tank

Fuel injectors

Type: Electronically controlled multi-port fuel injectors

Flow Rate: 200 cc/min at 3.0 bar

Part Number: 13641738721

Operating Pressure: 3.0 bar (43.5 psi)

Notes: Requires periodic cleaning to maintain optimal performance

Fuel Pressure Regulator

Type: Mechanical diaphragm regulator

Part Number: 13537541783

Operating Pressure: 3.0 bar (43.5 psi)

Notes: Integrated into the fuel pump assembly

Fuel System Diagnostics

Obd2 Codes

P0171 - System too lean
P0172 - System too rich
P0181 - Fuel temperature sensor circuit range/performance
P0191 - Fuel rail pressure sensor circuit range/performance

Diagnostic Tools

BMW DIS (Diagnostic Information System)
INPA (Integrated Navigation and Performance Analysis)

Notes: Regularly check for fuel system leaks and pressure irregularities

Fuel System Maintenance

inspection Interval: Every 15,000 miles (24,140 km)

Maintenance Items

Check fuel lines for leaks and wear
Inspect fuel tank for damage or corrosion
Test fuel pump pressure and flow rate
Clean fuel injectors

Notes: Use only BMW-approved cleaning agents for fuel system components

Fuel System Safety

Fire Hazards: Avoid open flames or sparks near the fuel system

Pressure Release: Depressurize the fuel system before servicing

Notes: Always disconnect the battery before working on the fuel system

Fuel System Tolerances

Fuel Pressure Tolerance: +/- 0.2 bar (2.9 psi)

injector Flow Tolerance: +/- 5%

Notes: Ensure all components meet BMW specifications during replacement

Service Information Service

Detailed service requirements and schedules for the fuel system

15,000 miles

12 months

Inspect fuel lines and connections
Check fuel pump operation
Test fuel pressure

Perform visual inspection for leaks and wear

30,000 miles

24 months

Replace fuel filter
Clean fuel injectors
Inspect fuel tank for damage

Use BMW-approved cleaning agents for injectors

60,000 miles

48 months

Replace fuel pump if necessary
Inspect and replace fuel pressure regulator if needed
Perform comprehensive fuel system diagnostic

Ensure all components meet BMW specifications

Frequently Asked Questions

Find answers to common questions about torque specifications

What type of fuel is recommended for the 1995-2002 BMW Z3?

The 1995-2002 BMW Z3 is designed to run on premium unleaded gasoline with an octane rating of 91 or higher. Using lower octane fuel may result in reduced performance and potential engine knocking.

What is the fuel tank capacity of the BMW Z3?

The fuel tank capacity of the 1995-2002 BMW Z3 is approximately 14.5 gallons (55 liters). This capacity may vary slightly depending on the specific model and trim.

Can I use ethanol-blended fuel in my BMW Z3?

The BMW Z3 can safely use ethanol-blended fuels with up to 10% ethanol (E10). However, fuels with higher ethanol content (e.g., E15 or E85) are not recommended as they can cause damage to the fuel system and engine components.

What is the fuel economy of the BMW Z3?

The fuel economy of the 1995-2002 BMW Z3 varies by engine type. For example, the 1.9L inline-4 engine achieves approximately 20-22 MPG in the city and 28-30 MPG on the highway, while the 2.8L inline-6 engine achieves around 18-20 MPG in the city and 25-27 MPG on the highway.

How often should I replace the fuel filter on my BMW Z3?

The fuel filter on the BMW Z3 should be replaced every 30,000 to 40,000 miles or as specified in the owner's manual. Regular replacement ensures optimal fuel flow and prevents contaminants from reaching the engine.

Factory Service Resources

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

BMW Z3 Owner's Manual

Coming Soon

The official owner's manual for the 1995-2002 BMW Z3, containing detailed information on fuel specifications, maintenance schedules, and safety precautions.

BMW Fuel System Maintenance Guide

Coming Soon

A comprehensive guide to maintaining the fuel system of the BMW Z3, including fuel filter replacement, fuel injector cleaning, and troubleshooting common fuel-related issues.

BMW Genuine Parts Catalog

Coming Soon

Access the official BMW parts catalog to find genuine fuel system components, including fuel pumps, filters, and injectors, specifically designed for the 1995-2002 Z3.

BMW Z3 Technical Service Bulletins

Coming Soon

A collection of technical service bulletins (TSBs) related to the BMW Z3, including updates and fixes for fuel system issues and performance improvements.

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