Description
Fuel injection supply pipe to the second cylinder for the RAIL in 1.4 HDi and 1.6 HDi e-HDi engines.
High-quality replacement fuel rail supply pipe designed for Citroën and Peugeot diesel engines. This pipe (part number 1570Q0) delivers high-pressure diesel to the second cylinder injector, ensuring stable fuel flow and reliable combustion. Engineered for professional workshops and experienced DIY mechanics, the component is a direct-fit solution for common HDi/e-HDi applications and is often searched for by its product code 1570Q0.
Technical Information
- Manufacturer: Stellantis (Citroën/Peugeot)
- Model: Engines 1.4 HDi, 1.6 HDi e-HDi
- Product Codes: 1570Q0
- Additional Numbers: Not Specified
Compatibility
Typical applications include a range of Citroën and Peugeot models equipped with 1.4 HDi or 1.6 HDi e-HDi powertrains. Examples: Citroën C2, C3, C4, Berlingo; Peugeot 207, 208, 307, 308, Partner. Verify engine type and part number before ordering to ensure correct fitment.
Function And Common Symptoms
The supply pipe routes high-pressure diesel from the common rail to the second-cylinder injector. A failing pipe typically causes visible fuel leakage at the rail or injector connection, loss of engine performance, hard starting, misfires, or fuel odor in the engine bay. In many cases failures are noticed as a localized leak around the pipe fittings or as fluctuating rail pressure.
Installation Recommendations
- Depressurize fuel system following the vehicle manufacturer’s procedure before starting work to avoid injury or fuel spray.
- Remove contaminated components and clean the rail mating surfaces prior to fitting the new pipe.
- Always replace sealing washers (copper/crush washers) and any single-use clamps or fasteners during installation to ensure a leak-free connection.
- Hand-start fittings to avoid cross-threading, then tighten to the manufacturer’s torque specifications (consult the workshop manual for exact values).
- After installation, prime the fuel system and run the engine while checking carefully for leaks. Re-check fittings after a short test drive.
Why It Fails
High-pressure fuel pipes can fail due to vibration and cyclic fatigue, corrosion from contaminated fuel or environmental exposure, damaged or hardened sealing washers, or incorrect installation (overtightening or misalignment). Heat cycles and mechanical stress around the injector and rail connections are common contributing factors. Regular inspection during servicing helps detect early signs such as small seepage or loosened clamps.
Notes For Mechanics
Part number searches for 1570Q0 are common — keep this code handy when sourcing or confirming the replacement. Use appropriate personal protective equipment and follow safe workshop practices when working with diesel fuel and high-pressure systems.
