Acura TLX 2015-2020 Fuel System Bolt Torque Specifications
This page provides detailed torque specifications for fuel system bolts on the 2015-2020 Acura TLX. Includes fuel pump, fuel rail, and fuel line connections.
Important Information
Safety guidelines and reference information for proper torque application
Safety First
- Always verify torque specifications with your vehicle's factory service manual
- Use properly calibrated torque wrenches
- Replace all torque-to-yield (TTY) bolts - they are single-use only
- When in doubt, consult a professional mechanic
Quick Reference Guide
Quick Reference Guide
Common Torque Patterns
Star Pattern
Used for wheels and other circular bolt patterns
Cross Pattern
Used for gaskets and cover plates
Sequential Pattern
Used for head bolts and other critical components
Common Mistakes to Avoid
Common Mistakes to Avoid
Over-tightening
Exceeding the specified torque value can stretch or break fasteners, damage threads, or crack components.
Always use a calibrated torque wrench and follow specifications exactly.
Incorrect Torque Sequence
Tightening bolts in the wrong order can cause uneven pressure distribution and potential leaks or damage.
Follow the manufacturer's specified torque sequence pattern.
Dirty Threads
Dirt, rust, or old thread locker can affect torque readings and proper fastener tension.
Clean and inspect all threads before assembly. Use new thread locker if specified.
Reusing TTY Bolts
Torque-to-yield bolts are designed to stretch and must not be reused.
Always replace TTY bolts with new ones. They are single-use only.
Dry vs. Lubricated
Not accounting for whether torque specs are for dry or lubricated fasteners can lead to incorrect tension.
Check if specs are for dry or lubricated threads. Use specified lubricant when required.
Recommended Tools
Recommended Tools
Torque Wrench (1/4" Drive)
Torque Wrench (3/8" Drive)
Torque Wrench (1/2" Drive)
Angle Gauge
Torque Wrench Care
- Calibrate annually or after 5,000 clicks
- Store at lowest setting
- Keep clean and lubricated
Search Specifications
Search by component name, bolt size, or description
Torque Calculator
Convert between different torque units
Fuel System-fuel Rail
Torque specifications for components related to the fuel rail.
1 Fuel Rail Mounting Bolts
M8 x 1.25
Fuel Rail Mounting Bolts
M8 x 1.25Torque Value
Important Notes
2 Fuel Pressure Regulator Bolts
M6 x 1.0
Fuel Pressure Regulator Bolts
M6 x 1.0Torque Value
Important Notes
3 Fuel Line Fitting/Banjo Bolt
M12 x 1.5
Fuel Line Fitting/Banjo Bolt
M12 x 1.5Torque Value
Important Notes
Fuel System-fuel Injectors
Torque specifications for components related to the fuel injectors.
1 Fuel Injector Mounting Bolts/Screws
M6 x 1.0
Fuel Injector Mounting Bolts/Screws
M6 x 1.0Torque Value
Important Notes
Fuel System-fuel Pump
Torque specifications for components related to the fuel pump.
1 Fuel Pump Mounting Bolts
M6 x 1.0
Fuel Pump Mounting Bolts
M6 x 1.0Torque Value
Important Notes
Fuel System-fuel Tank
Torque specifications for components related to the fuel tank.
1 Fuel Filler Neck Bolts
M6 x 1.0
Fuel Filler Neck Bolts
M6 x 1.0Torque Value
Important Notes
2 Fuel Tank Sending Unit/Level Sensor Bolts/Screws
M5 x 0.8
Fuel Tank Sending Unit/Level Sensor Bolts/Screws
M5 x 0.8Torque Value
Important Notes
Fuel System-fuel Filter
Torque specifications for components related to the fuel filter.
1 Fuel Filter Mounting Bolt/Nut
M8 x 1.25
Fuel Filter Mounting Bolt/Nut
M8 x 1.25Torque Value
Important Notes
Troubleshooting Guide
Common issues, diagnostic steps, and prevention guidelines
Common Issues
Bolt stretching, stripped threads, uneven torque patterns
Common Issues
Bolt stretching, stripped threads, uneven torque patterns
Loose Components
Symptoms:
- Rattling or vibration noises
- Visible movement in components
- Uneven panel gaps
Solutions:
- Clean threads and mounting surfaces
- Replace damaged fasteners
- Apply proper torque in sequence
- Use thread locker if specified
Stripped Fasteners
Symptoms:
- Unable to achieve proper torque
- Fastener spins freely
- Visible thread damage
Solutions:
- Use thread repair kit if appropriate
- Install thread insert (HeliCoil)
- Replace component if threaded hole is damaged
- Upgrade to higher grade fastener if recommended
Overtightened Components
Symptoms:
- Cracked or deformed parts
- Broken fasteners
- Compressed gaskets or seals
Solutions:
- Replace damaged components
- Use new fasteners
- Follow proper torque sequence
- Verify correct torque specifications
Diagnostic Steps
Visual inspection, torque verification, thread assessment
Diagnostic Steps
Visual inspection, torque verification, thread assessment
Visual Inspection
Inspect the affected area for any visible signs of damage or wear
- Check for cracks or deformation
- Look for signs of excessive wear
- Verify proper fastener installation
Torque Verification
Verify the torque applied to the fasteners
- Check the torque wrench calibration
- Verify the torque specification
- Compare the applied torque to the specification
Thread Assessment
Assess the condition of the threads
- Check for signs of thread damage
- Verify the thread type and size
- Check for proper thread engagement
Prevention Guidelines
Best practices, maintenance tips, tool care
Prevention Guidelines
Best practices, maintenance tips, tool care
Best Practices
- Always follow the recommended torque specification
- Use the correct type and size of fasteners
- Verify the torque wrench calibration regularly
Maintenance Tips
- Regularly inspect the affected area for signs of wear or damage
- Replace damaged or worn-out components promptly
- Keep the work area clean and organized
Tool Care
- Regularly clean and maintain the torque wrench
- Store the torque wrench in a dry and secure location
- Verify the torque wrench calibration before each use
Frequently Asked Questions
Find answers to common questions about torque specifications
Q1 Why are correct torque specifications important for fuel system bolts?
Why are correct torque specifications important for fuel system bolts?
Correct torque specifications are critical for ensuring a leak-free and safe fuel system. Over-tightening can damage threads or deform components leading to leaks, while under-tightening may result in fuel leaks due to inadequate sealing. Both scenarios pose fire hazards and can lead to engine performance issues. For example, an improperly torqued fuel injector bolt could cause a fuel leak directly onto the hot engine, a very dangerous situation.
Q2 What happens if I over-torque a fuel line banjo bolt?
What happens if I over-torque a fuel line banjo bolt?
Over-torquing a banjo bolt can crush the sealing washers, potentially leading to leaks. It can also strip the threads in the receiving component, requiring costly repairs. Additionally, an over-torqued banjo bolt can restrict fuel flow because it can damage the internal diameter of the banjo fitting itself.
Q3 Do I need to replace fuel system bolts after removing them?
Do I need to replace fuel system bolts after removing them?
It's generally recommended to replace fuel system bolts and associated gaskets or seals anytime they are removed. Many fuel system fasteners, like those on fuel rails or fuel pump assemblies, are designed as single-use to maintain proper sealing and clamping force. Reusing them might lead to leaks. For example, crush washers on fuel line connections are single-use, and attempting to reuse them will almost certainly cause a fuel leak.
Q4 Can I use threadlocker on fuel system bolts?
Can I use threadlocker on fuel system bolts?
Using threadlocker on fuel system bolts is not generally recommended unless specifically instructed by the manufacturer. Threadlocker compounds can react with fuel and cause issues such as contamination or weakening of the connection. Additionally, many fuel system bolts use specific torque settings to achieve the proper clamp load and sealing, which threadlocker might interfere with. Always consult the service manual before applying any threadlocker to fuel-related components.
Q5 Where can I find the exact torque specifications for my 2015-2020 Acura TLX fuel system?
Where can I find the exact torque specifications for my 2015-2020 Acura TLX fuel system?
The precise torque specifications for your 2015-2020 Acura TLX fuel system bolts can be found in the vehicle's official repair manual or online service databases, such as those available through Alldata or similar providers. These sources will provide the most accurate and model-specific torque values. Always double-check the specific year and engine variant to obtain correct numbers, as even minor model updates may have unique torque specifications.
Environmental Considerations
Temperature, humidity, and seasonal effects on torque specifications
Temperature Effects
Includes: High Heat, Cold Weather, Thermal Cycling
Temperature Effects
Includes: High Heat, Cold Weather, Thermal Cycling
Temperature can significantly impact torque values and fastener behavior
Cold Weather
Effects:
- Increased material brittleness
- Higher torque required due to thread contraction
- Reduced thread lubricant effectiveness
Recommendations:
- Allow components to warm to room temperature when possible
- Consider using winter-grade thread lubricants
- Check torque values more frequently during winter months
Hot Weather
Effects:
- Thermal expansion of components
- Decreased friction in threads
- Accelerated lubricant breakdown
Recommendations:
- Check torque when components are at normal operating temperature
- Use temperature-resistant thread lockers
- Consider re-torquing after heat cycles
Humidity and Corrosion
Covers: Rust Prevention, Salt Exposure, Moisture Control
Humidity and Corrosion
Covers: Rust Prevention, Salt Exposure, Moisture Control
Moisture and corrosion can affect fastener integrity and torque values
High Humidity
Effects:
- Accelerated corrosion formation
- Reduced friction coefficient
- Potential thread seizing
Prevention:
- Use corrosion-resistant fasteners
- Apply appropriate anti-seize compounds
- Maintain proper protective coatings
Salt Exposure
Effects:
- Rapid corrosion development
- Thread damage
- Seized fasteners
Prevention:
- Regular underbody washing
- Use of sacrificial anodes where appropriate
- Application of protective coatings
Seasonal Maintenance
Spring, Summer, Fall, and Winter maintenance schedules
Seasonal Maintenance
Spring, Summer, Fall, and Winter maintenance schedules
Spring
- Inspect for winter damage
- Clean and protect exposed fasteners
- Check torque on critical components
Summer
- Monitor heat-affected components
- Check expansion-related loosening
- Inspect cooling system mounts
Fall
- Prepare for winter conditions
- Apply corrosion protection
- Verify all fasteners are properly torqued
Winter
- More frequent inspection of critical fasteners
- Check for salt damage
- Monitor suspension component torque
Related Resources
Tools, service procedures, and technical bulletins
Recommended Tools
Torque Wrench (1/4" Drive)
A calibrated torque wrench capable of accurately measuring torque values in inch-pounds or Newton-meters, essential for precise fuel system bolt tightening.
- Accurate torque application
- 1/4" drive compatibility
Torque Wrench (3/8" Drive)
A calibrated torque wrench capable of accurately measuring torque values in foot-pounds or Newton-meters, essential for fuel pump module and associated larger bolt tightening.
- Accurate torque application
- 3/8" drive compatibility
Socket Set (Metric)
A set of metric sockets in various sizes to fit the fuel system bolts, ensuring proper engagement and reducing slippage.
- Various metric socket sizes
- Durable construction
Extension Bars
Extension bars in varying lengths are useful to reach recessed bolts that are not directly accessible with the torque wrench and socket alone.
- Varying lengths
- Durable construction
Service Procedures
Fuel Pump Module Bolt Torque Procedure
This procedure outlines how to properly torque the bolts securing the fuel pump module to the fuel tank on 2015-2020 Acura TLX models.
- Locate the fuel pump module access panel, typically under the rear seat.
- Disconnect the electrical connector to the fuel pump module.
- Remove any fuel lines connected to the module taking care to retain any O rings or seals.
- Loosen and remove the fuel pump module mounting bolts.
- Install the new or serviced fuel pump module.
- Tighten all mounting bolts by hand initially, then tighten to 12 Nm (106 in-lbs).
- Reconnect fuel lines with new O-rings or seals.
- Reconnect the electrical connector to the fuel pump module.
- Verify the fuel system is leak free and functioning properly before reassembly
Fuel Line Connection Torque Procedure
This procedure outlines how to properly torque the fuel line connection points on 2015-2020 Acura TLX models, including fuel injectors and fuel rails.
- Identify the fuel line connection point. Ensure all surfaces are clean and free of debris.
- Attach the fuel line to the component, hand-tightening the connection fitting.
- Using the appropriate torque wrench and socket, tighten the fitting to 20 Nm (15 ft-lbs) or as specified in the service manual for the specific connection.
- Double check the tightness of the fitting before pressureizing the system.
- Start the vehicle and inspect for leaks. Repeat the procedure if leaks are detected. Do not over tighten the fittings.
Technical Service Bulletins
Fuel Leak Diagnosis and Repair
2017-03-15A bulletin concerning common areas for fuel leaks on the 2015-2017 Acura TLX and recommended repair procedures.
Resolution: Inspect fuel pump module seal and all fuel line connections. Ensure proper torque application as per service manual specification. Replace O-rings and sealing surfaces as needed.
Fuel Injector Sealing Concerns
2018-08-22This bulletin addresses concerns related to fuel injector sealing issues on 2016-2019 Acura TLX models.
Resolution: When replacing injectors, use new O-rings. Confirm proper seating of the injectors and ensure the fuel rail bolts are torqued to specification using a calibrated torque wrench. Verify proper seating of injectors into fuel rail.
Updated Fuel Pump Module Seal Design
2020-01-10A bulletin discussing changes to the fuel pump module seal design starting in the 2020 model year and recommendations for older models.
Resolution: When replacing fuel pump modules or seals, use the latest updated parts. Older designs can cause leaks. Torque the fuel pump module bolts to 12 Nm (106 in-lbs).
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Technical Information
- All specifications, including torque values, fluid capacities, and maintenance procedures, should be verified against your vehicle's factory service manual.
- Vehicle specifications and procedures may vary by model year, trim level, and region.
- Always follow the manufacturer's recommended procedures and safety precautions.
- Working on vehicles can be dangerous. Always take proper safety precautions and use appropriate safety equipment.
- If you're unsure about any procedure, consult a qualified professional mechanic.