Product Details

Wuhan Jinhong Auto Parts Co., Ltd. is a manufacturer and exporter of common rail fuel injectors integrating manufacturing,processing and R & D.

Our factory has a complete and scientific management system and professional product development team, products have been advancing with The Times, quality is also constantly improving, product quality and service have been widely recognized by the industry. Our company has its own factory, combined with the sales model of trade factory, we can provide customers with a full range of services. In addition, our company has international logistics partners to reduce transportation costs for customers. Our company is a leading manufacturer and supplier of Marine parts and auto parts in China. At the same time, we have established partnerships with hundreds of factories specializing in the production of various high-quality auto parts.

Our goal is to provide the best service at the best price, your satisfaction is our best return. Look forward to working with you. Welcome friends from all walks of life to visit, guidance and business negotiations.

FREQUENTLY ASKED QUESTIONS (Q&A)

Fuel System Components (Injectors & Pumps)

Q1: Why does my newly installed injector have high back-leakage or a rough idle?

A: In 90% of cases, this is caused by fuel system contamination (microscopic dirt, rust, or metal shavings from a failing high-pressure pump). Even tiny particles can stall the internal valve. Another common reason is incorrect installation torque, which distorts the injector body.

Q2: Do I need to code/program the injectors after installation?

A: Yes. For modern common rail injectors, you must program the calibration code (such as IMA/IQA code printed on the connector) into the vehicle’s ECU using a diagnostic scanner. This ensures the ECU delivers the precise fuel volume required.

Q3: Can I reuse the old copper washers and O-rings?

A: Absolutely not. Copper washers flatten upon first use to create a perfect seal. Reusing them causes combustion gas leakage, which melts the injector nozzle or creates heavy carbon buildup ("black death") in the injector bore. Always use the brand-new seals provided.

Q4: What are the main signs of a failing fuel injector?

A: The most common symptoms include:

• Difficulties starting the engine (due to high back-leakage failing to build rail pressure).

• Black or white smoke from the exhaust.

• Engine knocking or rough idling.

• Increased fuel consumption and loss of engine power.

Q5: What is your warranty policy, and what voids it?

A: We offer a standard warranty on manufacturing defects. However, the warranty is voided under the following conditions:

• Damage caused by fuel contamination (water, dirt, or bad quality diesel).

• Incorrect installation torque or improper handling.

• Disassembling the component without our technical team's authorization.