0445120231 Diesel Fuel Injector For Engine QSB4.5 Parts
Product Details
| Product Name: | Fuel Injector | Material: | Steel |
|---|---|---|---|
| Place Of Origin: | Guangdong,China | MOQ: | 1 |
| OEM: | Support | ||
| Highlight |
Diesel fuel injector for QSB4.5 engine,QSB4.5 engine fuel injector part,Diesel injector with warranty |
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Product Description
| Product Name | Fuel Injector |
| Part Number | 0445120231 |
| Engine Model | QSB4.5 |
| Type | Engine Parts |
| Place of Origin | GUANGZHOU |
| Brand Name | JIAJUE |
| MOQ | 1 Piece |
| Condition | New |
| Availability | Rich Stock |
| Approximate Weight | 1KG |
| Size (per piece) | 20cm x 5cm x 8cm |
| Warranty | 3 Months |
| Shipment | Dispatched within 3 days |
- Cylinder Cut-out Test: Using diagnostic software (ET), shut off cylinders one by one and observe engine speed fluctuations.
- Fuel Rail Pressure Test: Check for internal leaks preventing system pressure buildup.
- Back-leakage Test: Excessive back-leakage indicates severe wear of internal control valve assembly.
- Visual Inspection: Inspect fuel injector nozzles for carbon buildup, blockage, or corrosion.
HEUI (Hydraulic Electronic Unit Injection) systems are extremely sensitive to contamination. A single speck of dust can cause premature failure.
- Preparation: Clean the injector bores thoroughly. Ensure no carbon debris, old O-rings, or fuel/oil residue at the bottom of the seat. Inspect the injector sleeve for pitting or erosion.
- Lubrication: Apply clean engine oil to the three O-rings and backup rings. Warning: Never use grease. Only use clean engine oil to ensure seals slide in without tearing.
- Seating the Injector: Push the injector down firmly by hand until you feel it "seat." Install the hold-down clamp and bolt.
- Torque Specifications: Tighten the bolt to 30 N⋅m±7 N⋅m (22 lb-ft). Over-tightening can crack the injector body; under-tightening causes combustion gas leakage.
- Trim Code Programming: Locate the 6-digit alphanumeric code on the top of the injector solenoid. Use ET (Electronic Technician) software to program this code into the ECM for precise fuel delivery synchronization.
| Issue | Root Cause | Solution |
|---|---|---|
| Black Smoke | Poor spray atomization or stuck needle valve causing dripping | Inspect the air filter |
| Hard Start | Internal leakage in the injector leading to insufficient starting oil pressure | Inspect the injector O-rings and internal seals |
| Engine Misfire | Faulty solenoid valve coil or worn internal valve components | Inspect wiring harness connections and replace damaged injectors |
Product Highlights
0445120231 Diesel Fuel Injector For Engine QSB4.5 Parts 0445120231 Diesel Fuel Injector For Engine QSB4.5 Parts Product NameFuel Injector Part Number0445120231 Engine ModelQSB4.5 TypeEngine Parts Place of OriginGUANGZHOU Brand NameJIAJUE MOQ1 Piece ConditionNew AvailabilityRich Stock Approximate ...
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