1. Introduction
This manual provides essential information for the proper installation, operation, maintenance, and troubleshooting of LANXIN Fuel Injector models 249-0713 (10R3262) and 21371673. These fuel injectors are designed for use in C11, C13, EC290, EC380, EC380D, and D13F engines, commonly found in heavy equipment such as excavators. Adhering to these instructions will help ensure the longevity and optimal performance of your fuel injector.
2. Specifications
| Feature | Value |
|---|---|
| Brand Name | LANXIN |
| Condition | New |
| Product Name | High Quality New Fuel Injector |
| Part Numbers | 249-0713, 10R3262, 21371673 |
| Engine Compatibility | C11, C13, EC290, EC380, EC380D, D13F |
| Application | Excavator Spare Parts, Heavy Equipment |
| Quality | High-Quality |
| Origin | Mainland China (Guangdong) |
| Video Outgoing-Inspection | Provided |
| Machinery Test Report | Provided |
| Warranty | 1 Year |
| Applicable Industries | Building Material Shops, Machinery Repair Shops, Manufacturing Plant, Retail, Construction works, Energy & Mining |
3. Installation and Setup
Installation of fuel injectors requires specialized knowledge and tools. It is highly recommended that installation be performed by a qualified technician to ensure proper function and prevent damage to the engine or the injector.
3.1 Pre-Installation Checks
- Verify that the new fuel injector (Part No. 249-0713 / 10R3262 / 21371673) matches the specifications required for your engine model (C11, C13, EC290, EC380, EC380D, D13F).
- Inspect the new injector for any visible damage or defects.
- Ensure all necessary seals and O-rings are present and in good condition.
- Gather all required tools, including torque wrenches, specialized injector removal/installation tools, and cleaning supplies.
3.2 Installation Steps (General Guidelines)
- Safety First: Disconnect the battery and relieve fuel system pressure before beginning any work.
- Remove Old Injector: Carefully remove the old fuel injector, ensuring no debris falls into the injector bore.
- Clean Injector Bore: Thoroughly clean the injector bore in the cylinder head to remove carbon deposits and old seal material. Use appropriate cleaning tools and solvents.
- Install New Seals: Install new copper washers and O-rings on the new injector as per manufacturer specifications.
- Lubricate: Apply a thin layer of clean engine oil or appropriate lubricant to the O-rings to aid installation and prevent damage.
- Insert Injector: Carefully insert the new fuel injector into its bore, ensuring it seats correctly. Do not force the injector.
- Secure Injector: Install the injector hold-down clamp and tighten the retaining bolts to the manufacturer's specified torque. Incorrect torque can lead to leaks or damage.
- Connect Fuel Lines and Electrical Connectors: Reconnect the fuel lines and electrical connectors to the injector. Ensure all connections are secure.
- Prime Fuel System: Follow the engine manufacturer's procedure to prime the fuel system and remove any air.
- Start Engine and Check for Leaks: Start the engine and carefully check for any fuel leaks around the injector and listen for abnormal noises.
4. Operation
The fuel injector is a critical component of the engine's fuel delivery system. Once properly installed, it operates automatically as part of the engine management system.
4.1 Function
The fuel injector is responsible for atomizing and injecting fuel directly into the engine's combustion chamber or intake manifold at precise timings and quantities, as dictated by the Engine Control Unit (ECU). This precise delivery ensures efficient combustion, optimal engine performance, and reduced emissions.
4.2 Normal Operation Indicators
- Smooth engine idle.
- Consistent engine power delivery.
- Absence of unusual engine noises (e.g., knocking, misfires).
- Normal fuel consumption for the engine type and load.
- Absence of black or excessive smoke from the exhaust.
5. Maintenance
Regular maintenance of the fuel system is crucial for the longevity and performance of your fuel injectors.
5.1 Recommended Practices
- Fuel Quality: Always use high-quality, clean fuel. Contaminated fuel is a primary cause of injector failure.
- Fuel Filters: Replace fuel filters regularly according to the engine manufacturer's recommendations. This prevents contaminants from reaching the injectors.
- Engine Servicing: Adhere to the engine manufacturer's recommended service intervals for oil changes and other routine maintenance.
- Injector Cleaning: If performance issues arise, professional ultrasonic cleaning of injectors may be considered, but only by experienced technicians.
- Visual Inspection: During routine engine checks, visually inspect the injectors for any signs of leaks, corrosion, or damage.
6. Troubleshooting
If you experience engine performance issues, the fuel injectors might be a contributing factor. Here are some common symptoms and potential causes:
| Symptom | Possible Cause | Action |
|---|---|---|
| Engine Misfires / Rough Idle | Clogged or faulty injector, poor fuel quality, electrical issue | Check fuel filter, inspect injector wiring, professional diagnostic scan. |
| Reduced Engine Power | Insufficient fuel delivery due to clogged injector, low fuel pressure | Check fuel pressure, inspect fuel lines, professional injector testing. |
| Excessive Smoke (Black) | Over-fueling due to leaking or stuck-open injector | Professional diagnostic and injector replacement if necessary. |
| Increased Fuel Consumption | Leaking or inefficient injector, incorrect spray pattern | Professional injector testing and replacement. |
| Difficulty Starting | No fuel delivery from injector, low fuel pressure | Check fuel pump, fuel filter, and injector operation. |
Note: Many engine performance issues can stem from various components. Always consult with a qualified mechanic or diagnostic specialist for accurate diagnosis and repair.
7. User Tips
- When replacing injectors, it's often beneficial to replace all injectors in a bank or all at once to maintain engine balance and performance.
- Always use new seals and O-rings during installation to prevent leaks and ensure a proper seal.
- Consider using a high-quality fuel additive periodically to help keep injectors clean, especially if fuel quality is a concern.
8. Warranty and Support
8.1 Product Warranty
This LANXIN Fuel Injector comes with a 1-Year Warranty from the date of purchase. The warranty covers manufacturing defects and material faults under normal operating conditions. Damage resulting from improper installation, misuse, neglect, or use of contaminated fuel is not covered.
8.2 Technical Support
For technical assistance, inquiries, or warranty claims, please contact LANXIN customer support. Video technical support is provided.
Contact Information:
- WhatsApp: +8618107388551 or +8618670783243
- Email: 2929105408@qq.com
When contacting support, please provide your product model, part number, and a detailed description of the issue.
