Description
Overflow hoses for engines with DELPHI 1.4 HDI 16V injection.
These overflow/return fuel hoses are designed for the Delphi‑injected 1.4 HDi 16V engines used in a range of Citroën and Peugeot models. Built to route excess fuel safely back to the tank and to connect fuel system components such as the fuel rail, pressure regulation valves and the fuel filter, the hoses restore correct fuel circulation and prevent leaks that can lead to loss of performance or fuel odor in the engine bay. The part is commonly sought under the reference 1579GJ and is a direct replacement option for mechanics and experienced DIY enthusiasts who maintain HDi diesel systems.
The hoses are made from fuel‑resistant elastomer compounds suited to diesel and are shaped to match factory routing, helping to maintain consistent fuel pressure and avoiding kinks. Replacing worn or cracked hoses improves reliability, prevents air ingress and reduces the risk of fuel leaks that can trigger rough idling, hard starting or injector issues.
Technical Information
- Manufacturer: Stellantis (Citroën / Peugeot)
- Model: 1.4 HDi 16V
- Product Codes: 1579GJ
- Additional Numbers: Delphi (Injection System)
Installation Recommendation
Work in a well‑ventilated area and take basic fuel‑handling precautions. Before starting, relieve fuel system pressure according to the vehicle workshop procedure. Drain or catch any spilled fuel and keep ignition sources away. Remove the old hoses by loosening the clamps or clips, note the routing and connection points, and install the new hoses with new clamps where possible. Ensure hoses are seated fully on fittings and routed to avoid contact with hot surfaces or sharp edges. After installation, prime the fuel system and run the engine while checking all connections for leaks and proper operation.
Most Common Failure Causes
Fuel hoses on HDi systems typically fail due to age, heat exposure and fuel contamination. Over time the rubber compound hardens and cracks, clamps loosen, or the hose can be abraded by contact with adjacent components. Symptoms include visible cracks, fuel smell, dampness around connections, rough idle or fuel pressure fluctuations. Regular inspection during routine maintenance helps catch wear early and avoids secondary damage to injectors or the high‑pressure pump.
Compatible Vehicles (Examples): Citroën C3, Peugeot 1007. If the vehicle uses a Delphi 1.4 HDi 16V injection system and the OEM reference 1579GJ matches your parts list, this hose set is intended as a direct fit replacement.
