In the fuel injection system of a car, the Common Rail (CR) fuel injection system is a high-efficiency technology that uses a combined high-pressure fuel pump and injector to inject high-pressure fuel into the cylinders of the engine. The CR fuel injection system usually uses multiple injectors to control the fuel injection amount of the engine, and the most common injector type is the CRDI Injector Nozzle.
All parts of the injector nozzle are subjected to precision testing, high temperature testing, low temperature testing, withstand pressure testing, leakage testing, durability testing, and various working conditions testing.
- Injector Nozzle Inspection
The factory inspection of the injector nozzle is undergone full inspection, random inspection, and batch inspection three inspections. Different brands of test benches are used to test the same injector nozzle for a total of no less than three times for factory inspection, and the fuel injector installation testing environment are progressed in dust-free workshop.
- Injector Nozzle Installation
When matching the valve cap and valve steam, Shumatt strictly complies with the standard of valve cap and valve stem clearance technical indicators to ensure that each valve assembly meets the factory standards and use standards.
2.CRDI Injector Nozzle DLLA148P957 Packing List
- Injector Nozzle’s Spare Parts List
| No. |
1 |
2 |
3 |
| Image |
 |
 |
 |
| Name |
Injector Nozzle Assy |
Nozzle Tube (Grey Cover) |
Nozzle Tube (Red Cover) |
| Description |
Injector Nozzle Part Number DLLA148P957 |
Prevent Nozzle Rusting and Damaging from Collision |
Prevent Nozzle Rusting and Damaging from Collision |
| No. |
4 |
5 |
/ |
| Image |
 |
 |
/ |
| Name |
Injector Nozzle Box (Xingma) |
Injector Nozzle Box (Liwei) |
/ |
| Description |
10 PCS/Box |
10 PCS/Box |
/ |
- Minors are prohibited to use fuel injector nozzle assembly,nozzle packing box to avoid injury.
- Injector nozzle box is recyclable and can be reused.
- Injector nozzle barrels is non-degradable material, please dispose of it properly after use.
- Injector Nozzle’s Warranty Conditions and Instructions
- It is necessary to provide pictures, videos, or test reports detected by the injector nozzle inspection equipment when the injector nozzle is abnormal during use as evidence to feed back to the salesman.
- Abnormal conditions are properly explained such as：Smoke, 2. Engine shake, 3. Difficulty starting the engine, 4. Engine noise, 5. oil leakage etc.
- Injector Nozzle Warranty Coverage
- After receiving the CRDI Injector Nozzle DLLA148P957within 15 days, if there is a performance failure and the product has no appearance damage, you can choose to replace it or repair it;
- If the CRDI Injector Nozzle DLLA148P957has performance problems during the warranty period (6-12 months), and it is confirmed to be product’s problems after being tested, you can contact our salesmen to replace the same model or a reworked product with the same performance for free;
- If the injector nozzle has obvious scratches on the surface, it can only be repaired and it will be returned as it is if the product is confirmed to be fault-free.
- Injector Nozzle Out of Warranty Coverage
- The injector nozzle’s warranty period has expired.
- Injector nozzle failure caused by high temperature, high pressure, humidity, rain and snow, saline-alkali land, earthquake, and used in abnormal environment.
- Injector nozzle damage caused by man-made reasons (throwing, strong magnetic field magnetization, set fire).
- Injector nozzle failure or injector damage caused by non-injector design, technology, manufacturing, quality and other issues.
- Injector nozzle failure due to system pressure exceeding system approved pressure.
- Injector nozzle failure caused by system voltage exceeding approved voltage.
- Injector nozzle failure caused by impurities (water, lead, aluminum powder, iron powder, sulfide) in the system fuel exceeding the standard requirements.
- Injector nozzle failure caused by not installing according to the tightening torque specified in the vehicle engine maintenance manual (the tightening torque is too large or too small).
- Injector nozzle failure caused by not following the installation angle specified in the injector maintenance manual.
- Injector nozzle failure caused by not following the cleaning requirements specified in the injector maintenance maintenance manual.
- Injector nozzle failure caused by failure to replace consumable parts as specified in the injector maintenance manual.
4.CRDI Injector Nozzle DLLA148P957 Storage Standard
- Choose a suitable storage place
The warehouse and cargo yard where the injector nozzles are stored should be kept clean and dry, and away from the factory buildings that generate harmful gases and dust; do not mix with acid, alkali, salt and other substances; the storage place should have a good drainage system; the cargo yard should be flattened with gravel or furnace ash etc. to enhance the water permeability of the surface layer to keep the reservoir area dry.
- Strict requirements of warehousing
Strict inspections should be carried out when the injector nozzles are put into storage, the surface cleaning work should be done well to remove water traces, oil stains, ash and other dirt, remove the rust and do anti-rust treatment in time. Packaged nozzles must be protected from damage.
- Keep the warehouse dry and preventing moisture
The relative humidity is usually below 70% for the injector nozzles placed in the room, and the
corrosion of the injector nozzles is significantly reduced.
Injector nozzles must be stored in the warehouse, and they are forbidden to store in the same
warehouse with commodities with high water content.
After the injector nozzle is exposed to rain, the corrosion rate will increase significantly. The purpose of sealing is to isolate the injector from rainwater and humid air, so the warehouse window should be checked in time to avoid rainwater entering the warehouse.
If the injector nozzle package is damaged, it should be repaired or replaced; when the package is damp, the packaging material should be dried; if the original anti-corrosion and oil applied at the factory is found to be damaged or dried up, it should be cleaned and re-applied oil in time.
It is forbidden to leave the injector nozzle exposed in the air for a long time.
It is forbidden to store acid, alkali, salt and other substances together with the injector nozzle.
The unpacked diesel injector nozzle must be rust-proof during secondary storage.
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