I20 Injector Guide: Performance, Properties, and Types for Industrial Applications

Types of i20 Injectors

The i20 fuel injector is a vital component in Hyundai's engine management system, responsible for delivering precise amounts of fuel into the combustion chamber or intake manifold. Modern i20 models utilize advanced fuel injection technologies to balance performance, fuel efficiency, and emissions compliance. These injectors are engineered to match specific engine types—petrol or diesel—and driving conditions.

Understanding the different types of injectors used in the Hyundai i20 helps in diagnosing performance issues, selecting replacements, or upgrading for enhanced efficiency. Below is a comprehensive overview of the most common injector types found across i20 variants.

Port Fuel Injectors

Also known as throttle body injectors, these spray fuel into the intake manifold just before the intake valve. This allows for thorough mixing with incoming air, creating a consistent air-fuel mixture.

Advantages

• Smooth idle and stable low-RPM performance
• Reduced carbon buildup on intake valves
• Cost-effective manufacturing and maintenance
• Reliable performance in standard driving conditions

Limitations

• Less precise fuel control compared to direct injection
• Lower fuel efficiency under high load
• Limited power output potential

Best for: Naturally aspirated petrol engines, city driving, fuel economy-focused models

Direct Injectors

Used in GDI (Gasoline Direct Injection) engines, these injectors deliver fuel directly into the combustion chamber at high pressure, enabling superior control over combustion timing and efficiency.

Advantages

• Higher thermal efficiency and fuel economy
• Increased engine power and torque
• Precise fuel metering under variable loads
• Supports turbocharging for performance gains

Limitations

• Prone to carbon buildup on intake valves
• Higher maintenance and cleaning costs
• More complex design and higher replacement cost

Best for: Turbocharged petrol engines, sporty driving, highway efficiency

Diesel Fuel Injectors

These high-pressure injectors are designed specifically for diesel engines, where they atomize fuel under extreme pressure (up to 2,000+ bar) into the hot compressed air in the combustion chamber.

Advantages

• High torque output and fuel efficiency
• Excellent durability under heavy loads
• Lower CO₂ emissions compared to petrol
• Longer engine life with proper maintenance

Limitations

• Sensitive to fuel quality and contaminants
• Expensive to repair or replace
• Noise and vibration at idle

Best for: Diesel-powered i20 models, long-distance driving, commercial use

Common Rail Injectors

A modern evolution of diesel injection, common rail systems use a shared high-pressure fuel rail to supply multiple injectors, allowing for multiple injection events per cycle (pilot, main, post-injection).

Advantages

• Ultra-precise fuel delivery and timing
• Reduced engine noise and smoother operation
• Lower emissions (NOx and particulates)
• Improved cold-start performance

Limitations

• Very high system complexity
• Requires premium diesel fuel
• Diagnostic and repair costs are significantly higher

Best for: Modern diesel i20s, Euro 6 compliance, refined driving experience

Multi-Point Fuel Injectors (MPFI)

Essentially a subset of port fuel injection, MPFI systems feature one injector per cylinder, positioned near each intake port. This setup ensures balanced fuel distribution across all cylinders, improving engine smoothness and responsiveness.

Advantages

• Even fuel distribution across all cylinders
• Improved throttle response and engine balance
• Better emissions control than single-point systems
• Widely used and well-understood technology

Limitations

• More components increase potential failure points
• Less efficient than direct injection
• Space-consuming design in compact engines

Best for: Older or base-model i20 petrol engines, reliability-focused applications

Injector Type	Fuel Type	Efficiency	Performance	Maintenance Level	Common i20 Applications
Port Fuel Injector	Petrol	Good	Medium	Low	Naturally aspirated engines, city models
Direct Injector	Petrol (GDI)	Excellent	High	High	Turbocharged engines, performance trims
Diesel Fuel Injector	Diesel	Very Good	High (Torque)	Medium	Diesel variants, long-haul driving
Common Rail Injector	Diesel	Excellent	Very High	High	Modern diesel i20, Euro 6 models
Multi-Point Fuel Injector	Petrol	Good	Medium	Low	Base petrol models, older i20 generations

Expert Tip: For i20 owners using direct injection or common rail systems, regular use of high-quality fuel injector cleaners can help prevent clogging and maintain optimal performance. Additionally, always use fuel that meets Hyundai's recommended specifications to avoid premature injector wear.

How to Choose the Right i20 Fuel Injector for Optimal Performance

Choosing the correct fuel injector for your Hyundai i20 is essential to restore engine efficiency, power delivery, and fuel economy. A high-quality, properly matched injector ensures smooth combustion, reduces emissions, and extends engine life. With various types and specifications available, selecting the right one requires careful consideration of several technical and practical factors.

Key Factors When Selecting i20 Fuel Injectors

Injector Type

Fuel injectors are primarily categorized into two types: manifold (port/multi-point) and direct injection (DI). The type you need depends on your i20’s engine design.

Port or Multi-Point Injectors are used in naturally aspirated engines, where fuel is sprayed into the intake manifold just before the intake valve. These provide excellent atomization and consistent fuel delivery, ideal for standard petrol engines.

Direct Injection Injectors deliver fuel directly into the combustion chamber under high pressure. This system is common in modern turbocharged petrol engines and offers superior fuel efficiency, increased power output, and reduced emissions. For diesel i20 models, ensure you select common rail diesel injectors, designed to handle extreme pressures required for precise fuel metering and clean combustion.

Tip: Always confirm your engine’s fuel system type before purchasing. Installing a port injector on a direct-injection engine (or vice versa) will result in poor performance or engine damage.

Compatibility with Your i20 Model

Not all injectors fit every i20 variant. Compatibility depends on multiple factors including engine code (e.g., G4FC, D4FB), fuel type (petrol/diesel), engine displacement (1.2L, 1.4L, etc.), and model year (2010–2023+).

Always refer to your vehicle’s owner’s manual, service documentation, or use an OEM parts lookup tool to verify the exact injector part number. Aftermarket injectors should explicitly state compatibility with your i20’s make, model, and engine configuration.

Mismatched injectors can lead to issues such as rough idling, misfires, poor acceleration, or even ECU error codes. In extreme cases, incompatible injectors may cause long-term engine damage due to incorrect fuel delivery patterns or pressure mismatches.

Fuel Efficiency and Emissions Performance

Precise fuel atomization is key to maximizing fuel economy and minimizing harmful emissions. Modern injectors are engineered to deliver a fine, evenly dispersed fuel mist, ensuring complete combustion.

High-efficiency injectors improve air-fuel mixing, which reduces unburned hydrocarbons (HC), carbon monoxide (CO), and nitrogen oxides (NOx). This not only enhances engine performance but also helps your i20 comply with strict emission standards like Euro 4, Euro 5, or Bharat Stage VI.

Look for injectors that are certified or tested for low emissions and improved fuel atomization. Some premium models feature optimized spray patterns and anti-coking designs to prevent carbon buildup—common in direct-injection engines.

Quality and Brand Reputation

The market offers a wide range of i20 injectors—from OEM (Original Equipment Manufacturer) to budget aftermarket brands. While cost is a consideration, quality should never be compromised.

Reputable brands like Bosch, Denso, Delphi, and Siemens invest heavily in R&D, durability testing, and precision manufacturing. Their injectors offer consistent flow rates, reliable solenoid operation, and longer service life.

OEM-spec or OE-equivalent injectors are recommended for most replacements. They often come with warranties and are built to meet or exceed factory specifications. Avoid no-name brands that may use substandard materials or lack proper calibration.

Injector Size and Flow Rate

The flow rate (measured in cc/min or lb/hr) determines how much fuel the injector delivers per cycle. The i20’s engine control unit (ECU) is calibrated for a specific flow rate, and deviating from it can disrupt engine operation.

Using an injector with a higher flow rate than specified can lead to over-fueling, rich air-fuel mixtures, black smoke, spark plug fouling, and increased emissions. Conversely, a lower flow rate causes lean conditions, leading to engine knocking, overheating, and potential piston damage.

Always match the new injector’s flow rate to the original equipment specification. If upgrading for performance (e.g., with a turbo or ECU remap), consult a professional tuner to ensure proper ECU recalibration.

Installation and Calibration

Even the best injector will underperform if not installed correctly. Proper installation includes using new seals and O-rings, ensuring clean fuel rails, and avoiding cross-threading.

Some modern injectors require coding or calibration via an OBD2 scanner to match the ECU, especially in diesel common rail systems. Failure to code new injectors may trigger error lights or cause imbalance between cylinders.

For DIY replacements, follow service manuals carefully. However, for complex setups (especially diesel or GDI systems), professional installation is strongly advised to ensure optimal performance and avoid costly mistakes.

Selection Factor	Why It Matters	Recommendation
Injector Type	Must match engine’s fuel delivery system	Use port injectors for MPI engines; direct injectors for GDI; common rail for diesel
Model Compatibility	Ensures proper fit and ECU communication	Verify engine code and year; use OEM part numbers
Flow Rate	Affects air-fuel ratio and engine safety	Match original specification (±2% tolerance)
Brand Quality	Determines longevity and reliability	Choose Bosch, Denso, Delphi, or Hyundai OEM
Emission Compliance	Impacts environmental performance and legality	Select injectors designed for Euro 5/6 or BS-VI standards

Best Practices for Injector Replacement

Diagnose First: Confirm injector failure with a professional scan or balance test before replacement. Symptoms include rough idle, misfires, poor fuel economy, and check engine light.

Replace in Sets: If one injector fails, consider replacing all injectors—especially in high-mileage vehicles—to ensure balanced performance.

Clean Fuel System: Replace fuel filters and clean the fuel rail to prevent contamination of new injectors.

Use OEM-Spec Parts: Stick to injectors that meet or exceed factory specifications for durability and compatibility.

ECU Coding (if required): For modern i20 models, especially diesel variants, ensure new injectors are coded to the ECU using diagnostic tools.

Important: Never install mismatched or untested fuel injectors on your Hyundai i20. Incorrect injectors can lead to severe engine damage, increased emissions, and voided warranties. Always consult a qualified mechanic or refer to official Hyundai service guidelines when in doubt. Proper selection and installation ensure reliable performance, better fuel economy, and compliance with environmental regulations.

Specifications and Maintenance of Hyundai i20 Fuel Injectors

Hyundai i20 fuel injectors are precision-engineered components critical to engine performance, fuel efficiency, and emissions control. Understanding their technical specifications, construction, and proper maintenance ensures optimal operation and longevity. Whether servicing petrol or diesel variants, attention to detail during installation and routine care significantly impacts reliability.

Material Composition

The i20 fuel injectors are constructed using high-grade materials to withstand extreme operating conditions. The outer body is made from durable steel alloy, providing structural integrity and resistance to vibration and thermal stress.

• Internal components utilize specialized plastics and copper alloys for precise movement and electrical conductivity
• Steel alloy housing resists corrosion and high-pressure environments common in modern fuel systems
• Copper elements enhance electromagnetic coil performance for accurate fuel metering
• Plastic insulators prevent short circuits and reduce internal wear

Key benefit: This combination ensures consistent fuel atomization, improved combustion efficiency, and extended service life under varying temperature and pressure conditions.

Physical & Performance Specifications

Hyundai i20 injectors are designed with model-specific dimensions and calibrated flow characteristics to match engine requirements across petrol and diesel variants.

• Standard Length: Approximately 130 mm
• Diameter: 17 mm (common across most variants)
• Flow Rate: ~200 cc/min (varies slightly by engine code and fuel type)
• Electrical Resistance: Typically 12 ohms (ideal range: 11.5–12.5 Ω for optimal solenoid response)
• Nozzle Design: Precision-drilled for fine fuel spray pattern, enhancing air-fuel mixing

Technical note: Always verify specifications using the vehicle’s VIN or engine code, as variations exist between model years and fuel types (e.g., CRDi diesel vs. MPI petrol).

Installation and Removal Procedure

Replacing i20 fuel injectors requires careful handling due to high fuel pressure and sensitive electrical connections. While experienced DIYers can perform the task, professional tools and precautions are recommended.

• Begin by relieving fuel system pressure: Remove the fuel pump relay and run the engine until it stalls, or use the Schrader valve (if equipped) on the fuel rail
• Disconnect the battery to prevent accidental ignition
• Unplug electrical connectors from each injector carefully to avoid damaging terminals
• Remove fuel lines and mounting hardware using appropriate wrenches or sockets
• Lift injectors out of the fuel rail and replace O-rings and seals with new ones
• Install new injectors, ensuring proper seating and alignment
• Reconnect all lines and connectors, then prime the system by cycling the ignition (ON/OFF) 3–4 times before starting the engine

Safety tip: Work in a well-ventilated area and keep fire extinguishers nearby due to fuel flammability.

Maintenance Best Practices

Proper maintenance prevents clogging, wear, and failure, preserving injector performance and engine efficiency.

• Use high-quality, detergent-rich diesel or petrol to minimize deposit formation
• Replace fuel filters every 15,000–20,000 km (or as per manufacturer schedule) to prevent particulate contamination
• Use OEM-approved or reputable-brand fuel injector cleaning additives every 10,000–15,000 km to dissolve carbon buildup
• Avoid harsh chemical cleaners not specifically designed for electronic fuel injectors
• Inspect for fuel leaks regularly—look for wetness or strong fuel odor around the fuel rail and injector bases
• Monitor engine performance: Hesitation, misfires, or increased fuel consumption may indicate injector issues

Preventive measure: Consider professional ultrasonic injector cleaning every 60,000 km for diesel models to restore flow balance and spray pattern.

Expert Recommendation: When replacing injectors, always install new O-rings and seals to prevent fuel leaks and vacuum ingress. Additionally, use thread-safe lubricant on injector rails if specified. For diesel variants, ensure the common rail system is fully depressurized before beginning work. After replacement, perform an ECU adaptation or relearn procedure (if supported) to optimize fuel delivery.

Parameter	Typical Value	Tolerance Range	Importance
Electrical Resistance	12 Ω	11.5 – 12.5 Ω	Ensures proper solenoid activation and timing accuracy
Flow Rate	200 cc/min	±5% across all injectors	Maintains balanced cylinder performance and smooth idle
Operating Pressure (Diesel CRDi)	1,600 bar	Up to 2,000 bar peak	Enables fine atomization and efficient combustion
Nozzle Spray Pattern	Conical, multi-hole	Even distribution, no dripping	Maximizes air-fuel mixing and reduces emissions

Additional Considerations

• Compatibility: Verify injector part number against the engine model (e.g., U2 1.4L CRDi vs. Gamma 1.2L MPI) to avoid fitment issues
• Diagnostics: Use an OBD2 scanner to check for misfire codes (P030X) or fuel trim imbalances that may point to faulty injectors
• Aftermarket vs. OEM: OEM injectors offer guaranteed compatibility and calibration; high-tier aftermarket brands (e.g., Bosch, Denso) can be cost-effective alternatives
• Environmental Impact: Clean injectors reduce hydrocarbon and particulate emissions, contributing to greener operation
• Longevity: With proper maintenance, i20 injectors typically last 150,000+ km, especially in diesel applications with clean fuel

DIY Hyundai i20 Fuel Injector Replacement Guide

Replacing fuel injectors on your Hyundai i20 is a manageable DIY project that can save time and money when done correctly. This comprehensive guide walks you through each step of removing and installing fuel injectors safely and effectively. Whether you're addressing poor fuel economy, rough idling, or misfires, this detailed walkthrough will help you complete the job with confidence and precision.

Safety Warning: Always disconnect the battery before starting work. Fuel systems are under pressure and highly flammable. Work in a well-ventilated area away from open flames, sparks, or heat sources. Keep a fire extinguisher rated for flammable liquids nearby at all times.

Step-by-Step i20 Injector Replacement Process

1. Gather the Necessary Tools and Supplies
   • Socket wrench set (metric sizes: 8mm, 10mm commonly used)
   • Torque wrench (critical for proper fuel rail bolt tightening)
   • Fuel line disconnect pliers (specific to quick-connect fuel lines)
   • Injector puller tool (gently removes injectors without damaging ports)
   • Flathead and Phillips screwdrivers
   • Multimeter (for testing injector resistance and electrical signals)
   • Fuel pressure gauge (to safely depressurize the system)
   • Shop towels, lint-free cloths, and absorbent pads
   • New O-rings and seals (always replace when reinstalling injectors)
   • Fresh engine oil (for lubricating new O-rings during installation)

   Pro Tip: Label all parts and connectors as you remove them. Use masking tape and a marker to identify each injector’s position to maintain proper firing order.

2. Prepare the Vehicle Safely
   • Park the vehicle on a level surface and engage the parking brake
   • Disconnect the negative terminal of the battery to prevent accidental ignition
   • Relieve fuel system pressure by removing the fuel pump fuse/relay and running the engine until it stalls
   • Place drip trays or absorbent mats under the engine bay to catch minor fuel spills
   • Cover sensitive electronics (ECU, sensors, fuse box) with plastic bags to prevent fuel contamination
   • Remove the engine cover to access the fuel rail and injectors

   Note: Never work on a pressurized fuel system. Confirm pressure is released using a fuel pressure gauge before disconnecting lines.

3. Remove the Fuel Injectors
   • Locate the fuel rail on top of the engine—this holds all injectors in place
   • Disconnect the fuel supply line using proper fuel line pliers to release the quick connector
   • Unplug the electrical connector from each injector (listen for the click when disconnecting)
   • Remove the fuel rail mounting bolts using a socket wrench
   • Carefully lift the entire fuel rail assembly upward, bringing the injectors with it
   • If an injector sticks in the intake manifold, use an injector puller tool—never pry or twist with screwdrivers
   • Inspect old injectors for clogs, carbon buildup, or damaged nozzles

   Once removed, place injectors on a clean surface and plug openings to prevent debris entry.

4. Install the New Fuel Injectors
   • Lubricate new O-rings lightly with clean engine oil before installation
   • Insert each new injector into its respective port in the intake manifold
   • Ensure injectors seat fully and rotate freely—no binding should occur
   • Reinstall the fuel rail assembly and hand-tighten mounting bolts
   • Torque fuel rail bolts to manufacturer specification (typically 7–10 Nm; consult service manual)
   • Reconnect the fuel line using proper pliers to secure the quick connector
   • Reattach all electrical connectors to the injectors, ensuring they click into place

   Important: Always use new O-rings and seals. Reusing old ones is the most common cause of post-replacement fuel leaks.

5. Test the System and Verify Operation
   • Reconnect the battery’s negative terminal
   • Turn the ignition key to the "ON" position (without starting) for 3–5 seconds to prime the fuel system
   • Repeat 2–3 times to ensure adequate fuel pressure buildup
   • Visually inspect around injectors and fuel lines for any signs of leakage
   • Start the engine and let it idle for several minutes, monitoring for smooth operation
   • Check for warning lights (e.g., Check Engine Light) and listen for unusual noises
   • Use a multimeter to test injector resistance (typically 11–16 ohms for high-impedance injectors)
   • Compare results with factory specifications to confirm proper function

   If the engine runs roughly, turn it off and recheck connections and seating. Allow time for the ECU to adapt to the new injectors.

Replacement Stage	Key Focus Areas	Common Mistakes to Avoid	Recommended Tools
Preparation	Battery disconnect, fuel pressure release	Skipping pressure relief, working near ignition sources	Fuel pressure gauge, fuse puller, gloves
Disassembly	Labeling connectors, protecting components	Damaging wiring, losing small parts	Marking tape, parts tray, flashlight
Removal	Gentle injector extraction	Forcing stuck injectors, breaking nozzles	Injector puller, O-ring pick
Installation	Proper O-ring seating, torque specs	Over-tightening bolts, dry O-rings	Torque wrench, lubricant, new seals
Testing	Leak inspection, idle performance	Starting with leaks, ignoring warning lights	Multimeter, flashlight, fire extinguisher

Expert Tip: After replacement, drive the vehicle under various conditions (idle, acceleration, highway) for 10–15 miles to allow the engine control unit (ECU) to recalibrate. This helps optimize fuel delivery and ensures peak performance from your new injectors.

Post-Replacement Maintenance Tips

• Check for fuel leaks again after the first drive and once the engine has cooled
• Use high-quality, detergent-rich gasoline for the first few tanks to help clean the new system
• Consider adding a fuel injector cleaner additive every 5,000 miles for long-term performance
• Monitor fuel economy and engine performance—improvements should be noticeable within a few days
• Schedule a professional OBD2 scan if the Check Engine Light appears post-replacement

Replacing your Hyundai i20’s fuel injectors at home is a rewarding task that enhances engine performance and efficiency. With proper tools, safety precautions, and attention to detail, you can complete this job successfully and maintain your vehicle’s health. However, if you encounter persistent issues like misfires or fuel leaks, consult a certified mechanic to diagnose deeper problems within the fuel or engine management system.

Frequently Asked Questions About Hyundai i20 Fuel Injectors

Understanding the role, types, and maintenance of fuel injectors is essential for Hyundai i20 owners seeking optimal engine performance, fuel efficiency, and long-term reliability. Below are detailed answers to common questions about the i20's fuel injection system.

Q1: What Are Fuel Injectors and How Do They Work?

Fuel injectors are precision-engineered electro-mechanical components responsible for delivering atomized fuel into an internal combustion engine’s intake manifold or directly into the combustion chamber. In the Hyundai i20, they play a critical role in ensuring the correct air-fuel mixture for efficient combustion.

Operating under electronic control from the Engine Control Unit (ECU), fuel injectors open and close rapidly—thousands of times per minute—to spray a fine mist of fuel. This precise metering directly influences:

• Engine Performance: Smooth acceleration and consistent power delivery.
• Fuel Efficiency: Optimal fuel usage reduces consumption and improves mileage.
• Emissions Control: Cleaner combustion lowers harmful exhaust emissions, helping meet environmental standards.

Over time, carbon buildup or internal wear can affect spray patterns, leading to reduced efficiency and performance issues.

Q2: What Types of Fuel Injectors Are Used in the Hyundai i20?

The Hyundai i20 utilizes two primary types of fuel injection systems, depending on the engine variant:

• Port Fuel Injection (PFI): Found in older or naturally aspirated petrol models, these injectors are mounted on the intake manifold and spray fuel into the intake port just before the intake valve. This method ensures good fuel-air mixing and is known for reliability and lower maintenance needs.
• Direct Fuel Injection (GDI): Used in newer turbocharged petrol engines (such as the Gamma or Kappa GDI variants), this system injects fuel directly into the combustion chamber at extremely high pressure. This allows for greater control over combustion timing, improved thermal efficiency, enhanced power output, and better fuel economy.

Diesel versions of the i20 (in select markets) use Common Rail Direct Injection (CRDi) technology, which operates at even higher pressures for superior atomization and efficiency.

Q3: Are Hyundai i20 Diesel and Petrol Fuel Injectors Interchangeable?

No, diesel and petrol fuel injectors in the Hyundai i20 are not interchangeable due to fundamental differences in design, operating pressure, and fuel delivery requirements:

Feature	Petrol Injectors	Diesel Injectors
Operating Pressure	3–6 bar (PFI), up to 200 bar (GDI)	Up to 2,000+ bar (CRDi systems)
Spray Pattern	Wider, finer mist for rapid vaporization	Narrower, high-velocity jet for direct combustion
Fuel Type	Gasoline (lower viscosity)	Diesel (higher viscosity, lubricating)
Construction	Less robust; optimized for lower pressure	Reinforced nozzles and seals for extreme pressure
Compatibility	Not suitable for diesel engines	Cannot function in petrol engines

Using the wrong type of injector can lead to poor combustion, engine misfires, fuel leaks, and even catastrophic engine damage. Always ensure correct part matching based on your i20’s engine code and fuel type.

Q4: What Materials Are Hyundai i20 Fuel Injectors Made Of?

Hyundai i20 fuel injectors are constructed using advanced materials to withstand high pressure, temperature fluctuations, and corrosive fuel environments:

• Injector Body: Made from high-grade stainless steel or corrosion-resistant steel alloys to endure constant exposure to fuel and engine heat.
• Nozzle Tip: Crafted from hardened steel or ceramic composites to resist erosion from high-pressure fuel spray and carbon deposits.
• Internal Components: Include precision-machined valves and plungers made from specialized alloys, along with non-metallic elements like heat-resistant plastics or copper washers for electrical insulation and sealing.
• O-Rings and Seals: Manufactured from synthetic rubber (e.g., Viton or NBR) to prevent fuel leaks and maintain injector integrity under pressure.

These materials work together to ensure durability, consistent fuel flow, and resistance to wear—critical for maintaining long-term engine health and performance in both city and highway driving conditions.

Q5: Can I Replace a Hyundai i20 Fuel Injector Myself?

Yes, experienced DIYers with mechanical aptitude can replace a fuel injector on the Hyundai i20, but it requires careful preparation, proper tools, and adherence to safety procedures.

Key Steps Involved:

1. Relieve Fuel Pressure: Disconnect the fuel pump fuse and run the engine until it stalls to safely depressurize the system.
2. Disconnect Battery: Prevent electrical shorts during the procedure.
3. Remove Engine Cover and Intake Components: Access the fuel rail by removing necessary covers and hoses.
4. Detach Fuel Lines and Electrical Connectors: Carefully disconnect the fuel supply line and wiring harness from each injector.
5. Remove Fuel Rail: Unscrew mounting bolts and gently lift the rail with injectors attached.
6. Replace Faulty Injector: Pop out the old injector and insert the new one, ensuring O-rings are properly lubricated and seated.
7. Reassemble and Test: Reinstall the rail, reconnect all lines, and start the engine to check for leaks and proper operation.

Recommended Tools: Socket set, fuel line disconnect tool, torque wrench, OBD2 scanner (to clear error codes), and replacement O-rings/seals.

Caution: Working with fuel systems poses fire and safety risks. If you're unfamiliar with engine components or lack the right tools, it's strongly recommended to have the replacement performed by a certified mechanic. Incorrect installation can lead to fuel leaks, poor engine performance, or check engine light activation.