Description
Overview
The Bosch Fuel Pressure Regulator 1634149380 is designed for PSA 1.4 HDi and 1.6 HDi common-rail diesel engines. It controls the fuel rail pressure to ensure correct injector delivery and stable engine performance. Suitable for Citroën & Peugeot models equipped with these engines, this unit is supplied as a direct Bosch-fit replacement.
Features And Function
The regulator maintains a constant fuel rail pressure by diverting excess fuel back to the tank or adjusting flow through the return path, ensuring accurate injection quantity and timing. Proper regulation prevents rough idle, loss of power and excessive exhaust smoke, supporting overall drivability and fuel efficiency.
Fitment And Compatible Models
Commonly used on PSA Group vehicles with 1.4 HDi and 1.6 HDi engines. Typical applications include, but are not limited to, Citroën C3, C4, Berlingo and Peugeot 207, 307, 308, Partner. Always verify compatibility using your vehicle VIN or OEM part cross-reference before installation.
Replacement And Installation
Typical replacement steps: relieve the fuel system pressure, disconnect the negative battery terminal, unplug the electrical connector and detach fuel lines, remove mounting fasteners, replace the regulator and any seals or O-rings, then reconnect and check the system for leaks. After installation, verify correct fuel rail pressure and proper engine operation. Fuel system work should be performed with care; consult a professional mechanic if unsure.
Failure Causes And Symptoms
Pressure regulators may fail due to fuel contamination, clogged return passages, internal wear or prolonged high mileage. Symptoms include unstable idle, reduced engine power, hesitation on acceleration, fuel odor or visible fuel leakage. If such symptoms occur, inspect the regulator and associated fuel system components.
Technical Information
Manufacturer: Bosch
Model: Citroën, Peugeot 1.4 HDi / 1.6 HDi
Product Codes: 1634149380
Additional Numbers: 0928400607
