Description
Fuel Injection Feed Pipe To The Third Cylinder For The RAIL In 1.4 HDi And 1.6 HDi e-HDi Engines.
This high-pressure fuel feed pipe delivers diesel from the common rail to the injector of the third cylinder on Citroën and Peugeot HDi engines. Designed for professional workshops and DIY mechanics, the pipe is a direct-fit component commonly searched by its part number 1570Q1. It restores correct fuel flow to Cylinder 3, helps eliminate leaks and misfires caused by damaged or corroded lines, and is suitable for vehicles equipped with 1.4 HDi and 1.6 HDi e‑HDi systems.
Technical Information
- Manufacturer: Stellantis / Citroën / Peugeot
- Model: Engines 1.4 HDi, 1.6 HDi e-HDi (Third Cylinder Feed Pipe)
- Product Codes: 1570Q1
- Other Numbers: OEM/PSA Reference 1570Q1
Common Applications
Used On Various Citroën And Peugeot Models Equipped With 1.4 HDi Or 1.6 HDi e-HDi Engines. Typical Fitment Includes Small Passenger Cars And Light Vans Where These Diesel Engines Are Installed.
Function And Symptoms Of Failure
The feed pipe transfers high-pressure diesel from the common rail to the injector nozzle on cylinder three. When the pipe Is Damaged Or Leaking, Symptoms May Include Fuel Odour, Visible Leak Around The Injector Or Rail, Rough Idle, Cylinder Misfire, Loss Of Power And Illumination Of The Engine Warning Light. Leaks At The Fittings Can Also Cause Difficult Starting And Reduced Fuel Pressure At The Injector.
Installation Recommendations
- Relieve Fuel System Pressure Before Removal And Work In A Well‑Ventilated Area To Avoid Fuel Vapours.
- Always Replace Copper/Sealing Washers And Any Seals At The Injector And Rail Connections When Installing A New Pipe.
- Tighten Connections To Manufacturer Torque Specifications — Do Not Overtighten. If Unsure, Use A Calibrated Torque Wrench.
- After Installation, Prime The Fuel System, Start The Engine And Check All Connections Under Pressure For Leaks.
- If The Job Involves Removing Injectors Or Rail Hardware, Follow Manufacturer Procedures To Avoid Contamination And Air Ingress.
- Wear Appropriate Protective Equipment And Dispose Of Any Contaminated Rags Or Fuel Safely.
Why This Part Fails Most Often
- Corrosion From Road Salt Or Moisture Causing Pitting And Subsequent Leaks.
- Mechanical Damage From Impact Or Incorrect Handling During Repairs.
- Seal Or Washer Failure At The Connection Points Leading To Slow Leaks.
- Vibration Fatigue Over Time, Especially On Vehicles With High Mileage Or Harsh Operating Conditions.
- Contaminated Fuel Or Debris Causing Erosion At The Fittings.
Searchable By Part Number 1570Q1 — Ideal For Mechanics And Experienced DIYers Who Need A Reliable Replacement Rail Feed Pipe For Cylinder Three. Install With Correct Seals And Torque To Ensure Long Service Life.
