BMW 335i 2005-2011 Fuel System Specifications
Detailed technical specifications for the fuel system of the 2005-2011 BMW 335I, covering fuel type, pressure, injector details, and pump requirements. Essential for diagnostics, repair, and maintenance.
Overview Specifications
Comprehensive description of the fuel specifications for the 2005-2011 BMW 335I, including key features, measurements, and technical details. This section covers fuel type, octane rating, fuel system components, and performance considerations.
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Key Specifications
Fuel Tank Capacity
16.1 gallons (61 liters)
Minimum Octane Rating
91 AKI
Fuel Pump Pressure
50-200 bar (725-2900 psi)
Fuel Injector Flow Rate
200-300 cc/min at 100 bar
Combined Fuel Economy
21-23 mpg (8.9-9.8 km/L)
Available Specifications
Fuel Type and Octane Rating
This section details the recommended fuel type and octane rating for optimal performance and engine longevity.
Fuel Type and Octane Rating
This section details the recommended fuel type and octane rating for optimal performance and engine longevity.
Recommended Fuel Type
- Premium unleaded gasoline is required for the 2005-2011 BMW 335I.
- Minimum octane rating of 91 AKI (Anti-Knock Index) is recommended.
- Using lower octane fuel may result in reduced performance and engine knocking.
- Ethanol blends up to 10% (E10) are acceptable.
Octane Rating Specifications
- Optimal octane rating: 93 AKI for peak performance.
- Minimum octane rating: 89 AKI (with reduced performance).
- Higher octane fuels improve combustion efficiency and reduce emissions.
- Avoid fuels with octane ratings below 87 AKI to prevent engine damage.
Note: Using fuel with an octane rating below the recommended minimum may void the vehicle's warranty.
Fuel System Components
This section provides an overview of the fuel system components, including the fuel tank, fuel pump, and injectors.
Fuel System Components
This section provides an overview of the fuel system components, including the fuel tank, fuel pump, and injectors.
Fuel Tank Specifications
- Fuel tank capacity: 16.1 gallons (61 liters).
- Material: High-density polyethylene (HDPE) for durability and corrosion resistance.
- Includes an integrated fuel level sensor for accurate fuel monitoring.
- Designed to withstand pressures up to 10 psi.
Fuel Pump and Injectors
- High-pressure fuel pump delivers fuel at 50-200 bar (725-2900 psi).
- Direct fuel injection system with piezo-electric injectors.
- Injector flow rate: 200-300 cc/min at 100 bar.
- Fuel pump power consumption: 70-100 watts.
Note: Regular maintenance of the fuel pump and injectors is essential to prevent performance issues.
Fuel Consumption and Efficiency
This section covers fuel consumption rates and efficiency metrics for the BMW 335I.
Fuel Consumption and Efficiency
This section covers fuel consumption rates and efficiency metrics for the BMW 335I.
Fuel Economy Ratings
- City fuel economy: 17-19 mpg (6.9-8.1 km/L).
- Highway fuel economy: 26-28 mpg (11.0-11.9 km/L).
- Combined fuel economy: 21-23 mpg (8.9-9.8 km/L).
- Fuel consumption rate: 4.3-4.8 gallons per 100 miles.
Factors Affecting Fuel Efficiency
- Driving style: Aggressive driving reduces fuel efficiency by up to 33%.
- Tire pressure: Underinflated tires can decrease fuel efficiency by 3-5%.
- Engine load: Heavy loads or towing significantly increase fuel consumption.
- Environmental conditions: Cold weather can reduce fuel efficiency by 10-20%.
Note: Maintaining proper tire pressure and avoiding excessive idling can improve fuel efficiency.
Fuel System Maintenance
This section outlines maintenance procedures and intervals for the fuel system.
Fuel System Maintenance
This section outlines maintenance procedures and intervals for the fuel system.
Fuel Filter Replacement
- Recommended replacement interval: Every 30,000 miles (48,000 km).
- Fuel filter location: Integrated into the fuel pump module.
- Replacement requires specialized tools and knowledge.
- Symptoms of a clogged filter include reduced power and poor acceleration.
Fuel Injector Cleaning
- Recommended cleaning interval: Every 15,000-20,000 miles (24,000-32,000 km).
- Use BMW-approved fuel injector cleaning additives.
- Professional cleaning may be required for severe deposits.
- Clean injectors improve fuel atomization and combustion efficiency.
Note: Avoid using off-brand additives, as they may damage the fuel system.
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Component Specifications
Fuel Type
- Recommended Fuel
- Premium unleaded gasoline (91 AKI or higher)
- Minimum Octane Rating
- 89 AKI
- Ethanol Content
- Up to 10% (E10)
- Notes
- Using fuel with lower octane may reduce performance and fuel efficiency
Fuel System
- Fuel Delivery
- Direct injection
- Fuel Pump Pressure
- 5.0 bar (72.5 psi)
- Fuel Filter Part Number
- 13 32 7 566 327
- injector Type
- High-pressure piezoelectric injectors
- injector Part Number
- 13 53 7 566 328
Fuel Tank
- Capacity
- 16.1 gallons (61 liters)
- Material
- High-density polyethylene
- Fuel Level Sensor Part Number
- 16 14 7 161 789
- Notes
- Includes integrated fuel pump and level sensor assembly
Fuel Pump
- Type
- Electric in-tank fuel pump
- Flow Rate
- 150 liters per hour (39.6 gallons per hour)
- Operating Pressure
- 5.0 bar (72.5 psi)
- Part Number
- 16 14 7 161 790
- Notes
- Includes integrated fuel pressure regulator
Fuel injectors
- injector Flow Rate
- 200 cc/min at 3.0 bar
- injector Resistance
- 12 ohms
- injector Spray Pattern
- Multi-hole
- Notes
- Designed for precise fuel delivery and atomization
Fuel Pressure Regulator
- Type
- Integrated into fuel pump
- Regulated Pressure
- 5.0 bar (72.5 psi)
- Tolerance
- +/- 0.2 bar
- Notes
- Maintains consistent fuel pressure for optimal performance
Fuel Filter
- Type
- In-line cartridge
- Filtration Rating
- 10 microns
- Replacement interval
- Every 30,000 miles or 24 months
- Part Number
- 13 32 7 566 327
- Notes
- Includes integrated pressure relief valve
Fuel System Diagnostics
- Diagnostic Tool
- BMW ISTA/D or compatible OBD-II scanner
- Common Codes
-
- P0171 - System too lean
- P0172 - System too rich
- P0087 - Fuel rail/system pressure too low
- Notes
- Regularly check for fuel system leaks and pressure anomalies
Fuel System Maintenance
- injector Cleaning Interval
- Every 60,000 miles
- Fuel Filter Replacement interval
- Every 30,000 miles
- Fuel Tank Cleaning Interval
- As needed (e.g., after contamination)
- Notes
- Use BMW-approved fuel additives for injector cleaning
Fuel System Safety
- Fire Hazard Warning
- Avoid open flames or sparks near fuel system components
- Pressure Relief Procedure
- Depressurize fuel system before servicing
- Notes
- Follow BMW repair manual guidelines for safe fuel system maintenance
Service Information Service
Detailed service requirements and schedules for the fuel system
- Replace fuel filter
- Inspect fuel lines and connections
- Check fuel pump operation
Use BMW-approved parts and procedures
- Clean fuel injectors
- Inspect fuel tank for leaks or damage
- Test fuel pressure and flow rate
Perform diagnostics if any fuel system issues are detected
Frequently Asked Questions
Find answers to common questions about torque specifications
Q1 What type of fuel is recommended for the 2005-2011 BMW 335i?
What type of fuel is recommended for the 2005-2011 BMW 335i?
The 2005-2011 BMW 335i requires premium unleaded gasoline with an octane rating of 91 AKI (Anti-Knock Index) or higher. Using lower octane fuel may result in reduced performance and potential engine knocking.
Q2 What is the fuel tank capacity of the 2005-2011 BMW 335i?
What is the fuel tank capacity of the 2005-2011 BMW 335i?
The fuel tank capacity of the 2005-2011 BMW 335i is 16.1 gallons (61 liters). This allows for a balance between range and vehicle weight.
Q3 Can I use ethanol-blended fuel in my BMW 335i?
Can I use ethanol-blended fuel in my BMW 335i?
Yes, the 2005-2011 BMW 335i can use ethanol-blended fuels containing up to 10% ethanol (E10). However, fuels with higher ethanol concentrations (e.g., E15 or E85) are not recommended as they can damage the fuel system and void the warranty.
Q4 What is the fuel economy of the 2005-2011 BMW 335i?
What is the fuel economy of the 2005-2011 BMW 335i?
The 2005-2011 BMW 335i achieves an EPA-estimated fuel economy of 17 mpg in the city and 26 mpg on the highway. Actual mileage may vary based on driving conditions and habits.
Q5 What should I do if I accidentally use the wrong type of fuel?
What should I do if I accidentally use the wrong type of fuel?
If you accidentally use fuel with an octane rating below 91 AKI or a high ethanol blend, avoid driving the vehicle and contact a BMW-certified technician immediately. Running the engine with improper fuel can cause severe damage and void the warranty.
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 Fuel System Maintenance Guide
Coming SoonLearn about proper fuel system maintenance, including fuel filter replacement and injector cleaning, to ensure optimal performance.
Understanding Octane Ratings
Coming SoonA detailed explanation of octane ratings and their importance for high-performance engines like the BMW 335i.
Ethanol-Blended Fuels and Your BMW
Coming SoonUnderstand the effects of ethanol-blended fuels on your BMW 335i and how to avoid potential issues.
BMW Warranty and Fuel Requirements
Coming SoonLearn how using the correct fuel type impacts your BMW warranty and what to do in case of fuel-related issues.
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