Common faults include mechanical and electrical faults. Mechanical faults include stuck fuel injector valve core, blocked fuel injector, and leakage. When the fuel injector encounters these faults, it can cause mechanical action failure, thereby affecting the normal operation of the engine, and sometimes even causing serious engine failures. Fuel injector needle valve stuck The operation of the fuel injector is signaled by the engine control unit, and the solenoid coil of the fuel injector is energized to generate suction force to drive the needle valve of the fuel injector to operate. Due to the gap between the needle valve and the valve seat being blocked by residual adhesive, the needle valve action becomes sluggish and cannot be opened normally, thereby affecting the normal fuel injection rate. After the needle valve of the fuel injector malfunctions, the engine may experience symptoms such as difficulty starting, unstable idle speed, and poor acceleration. The main reason for fuel injector sticking is the use of inferior gasoline, as the paraffin and gum in inferior gasoline cause the needle valve of the fuel injector to stick. Fuel injector blockage Fuel injector blockage faults can be divided into internal blockage of the fuel injector and external blockage of the fuel injector head. The internal blockage of the fuel injector is often caused by impurities and dirt mixed in the gasoline, which blocks the movement gap of the needle valve inside the fuel injector, causing abnormal mechanical action of the fuel injector. When the fuel injector malfunctions due to blockage, the engine may experience symptoms such as difficulty starting, unstable idle speed, and poor acceleration. In severe cases, it may even cause severe engine shaking and cause abnormal wear of related mechanical components. Fuel injector leakage Fuel injector leakage faults are generally divided into two situations: internal leakage and external leakage. The internal leakage of fuel injectors is often caused by their early wear and tear during use, causing them to continuously leak fuel into the intake manifold under the action of system pressure. The external leakage of the fuel injector often occurs at the connection between the fuel injector and the fuel rail, and it is mostly due to the sealing surface sealing. If gasoline leaks outside the intake manifold and oil droplets fall on the cylinder block, it will evaporate in the engine compartment when heated. Once an electric spark occurs, it can cause a fire at any time, with serious consequences. When an internal leak occurs in the fuel injector, it can cause poor atomization of the fuel injected by the injector, causing unstable engine operation, incomplete combustion of the mixture, black smoke from the exhaust pipe, and significantly increasing fuel consumption of the vehicle. When an external leakage fault occurs in the fuel injector, it can lead to engine starting difficulties, idle stalling, decreased power, increased fuel consumption, running surge, and poor acceleration. In addition, when the sealing surface at the connection between the fuel injector and the intake pipe is damaged, it can also cause leakage in the intake system, causing additional air to enter the engine combustion chamber, resulting in a lean mixture and abnormal engine operation.

Jinan CARMAN International Trade Co., Ltd. has been committed to building excellent suppliers in the automobile industry for many years, providing high-quality vehicle and auto parts services for new and old customers. Our company was founded in 2013,Warehouse inventory is huge, and many kinds, to meet your various needs. The company has been adhering to the quality as the core,to serve customers as their responsibility, strict with  themselves, has been China and the world a lot of quality inspection,china heavy truck spare parts has been exported to Russia,the United States, Europe and Southeast Asia and other countries.Our company is looking forward to your attention and visit.

1. Our packing uses export wooden cases, plastic boxes, cartons or pallets. All the package are very strong, the wooden box is firmly bound, the package is covered with a waterproof film to prevent water or damage during transportation.Before packing, we can also stick corresponding labels and shipping marks according to your needs. All our goods are well packed.
2. According to the quantity, we can use express delivery, air transportation or ocean transportation, automobile transportation, railway transportation, etc. we have our own freight forwarders, and we can also use the designated freight forwarders of customers, which can meet various delivery requirements of customers, such as EXW, FOB, CIF, etc.It can also be exported from many ports in China. Such as Qingdao port, Ningbo port, Lianyungang port, Tianjin port, Suifenhe River and Alashankou in China.
3. We can also send the goods by express if the customers have less goods. According to customer's request, we can use express.such as DHL, TNT, EMS, FedEx, etc. the delivery time is 3-7. Safe, fast and convenient. It's also a good choice for you.

Jinan Carman International Trade Co., Ltd. is located in Shandong. It has a registered capital of 5 million and has been in the company for 12 years. Here, we always provide customers with good products and technical support, and sound after-sales service. We supply many parts for diesel engine including Weichai, Shangchai, Yuchai, Deutz. We have always pursued the concept of sincere cooperation, coordinated development, and win-win excellence, and pursue long-term and outstanding achievements. We have successfully provided global customers with high-quality technical services and timely spare parts supply, and have established stable cooperative relations with customers in North Africa, Central Africa, Southeast Asia, the Middle East, Latin America and other regions. Seek long-term partnerships with global business partners and better serve our customers in the future. We have good products and a professional sales and technical team.

Q1:How can get exact price,Can I get a price discount?
A1: If you can supply correct part number,it's the best way to get exact price,The price depends on your purchasing quantity, more quantity more discount.