This is a high-pressure fuel injector, part number 30777314, designed for the D5 diesel engines in various Volvo models. It precisely meters and atomizes diesel fuel into the combustion chamber, ensuring efficient and complete combustion. A faulty injector can lead to poor fuel atomization, incomplete combustion, or incorrect fuel delivery, resulting in reduced power, increased fuel consumption, and rough engine operation. Symptoms include rough idling, black smoke, and a noticeable loss of engine performance.
Always verify with serial number before ordering.
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Cross-reference part number with serial number before ordering to confirm fitment. Keep original parts until new ones are confirmed correct. Record part numbers replaced for future reference.
Always consult the OEM service manual for model-specific torque values and procedures. WhatsApp our technical team if you need fitment guidance.
The initial sign of a failing fuel injector is often a rough or uneven idle, accompanied by a noticeable loss of engine power. If ignored, fuel delivery can become inconsistent, leading to increased exhaust emissions (black smoke) and potentially damaging engine components due to poor combustion. Continued operation with faulty injectors can result in significant fuel waste and reduced overall engine efficiency.
Ensure the injector seat in the cylinder head is perfectly clean and free of any debris before installing the new injector. Do not reuse old copper sealing washers; always use new ones.
Inspect the fuel filter and fuel lines for any signs of contamination or blockage, as these can affect injector performance.