Description
Overview
The Bosch Fuel Pressure Regulator controls and stabilizes fuel rail pressure on PSA 1.4 HDI and 1.6 HDI diesel engines. Intended for Citroen and Peugeot models within the PSA group, this regulator ensures precise fuel delivery for optimal combustion, smoother idling and improved throttle response.
Key Features
- Direct replacement for Bosch part number 1634149380 and reference 0928400607
- Helps restore correct fuel pressure, enhancing engine performance and fuel economy
- Suitable for installation by professional mechanics or experienced DIY technicians
Function And Symptoms Of Failure
The fuel pressure regulator maintains consistent pressure in the fuel rail so the injectors receive the correct volume of fuel. Common failure causes include contamination from dirty fuel, clogged fuel filters, diaphragm deterioration, internal leakage or spring fatigue. Typical symptoms are rough idle, loss of power, hard starting, reduced fuel economy, fuel smell and diagnostic trouble codes related to fuel pressure or injection.
Replacement And Installation Notes
Replacement should follow safe fuel-system procedures: relieve fuel pressure, disconnect the battery, access the regulator on the fuel rail, unplug the electrical connector and fuel lines, remove mounting fasteners, replace the unit and any sealing O-rings, then reassemble and check for leaks. Verify fuel pressure after installation and clear any related fault codes. Use correct torque values and follow standard safety precautions when working with diesel fuel systems.
Durability And Maintenance
There is no fixed service interval for the regulator; lifespan depends on fuel quality, maintenance of the fuel filter and overall vehicle mileage. Regular fuel filter replacement and clean fuel reduce the risk of premature regulator failure.
Technical Information
- Manufacturer: Bosch
- Model: PSA vehicles with 1.4 HDI and 1.6 HDI engines (Citroen, Peugeot)
- Product Codes: 1634149380
- Other Numbers: 0928400607
