I would be surprised if you can use normal hose and connectors. The Td5 fuel system is high pressure system. From the fuel pump it goes to the fuel filter at 0.75 bar, then back to the fuel pump and from there to the engine at 4 bar. You need to make sure any replacement can stand these pressures.
actually, i think between between pump and fpor, pressure can go up to 7.5bar then it is regulated to 4bar after the fpr. From anther forum, someone made these observations using a custom made pressure sensor:
Raw fuel pump pressure (sender installed upstream of FPR):
- Runs between 6 and 7.5 bar (different vehicles)
- Not a steady value, even when idling oscillates in a 0.5 bar range
- Decreases as fuel heats up
- Decreases slightly as consumption rises (full boost)
Regulated fuel pressure (sender installed downstream of FPR and injectors, i.e. downstream of fuel cooler)
- Runs at 4 bar steady (nothing new)
- Decreases sharply when consumption rises (down to 3.5 bar)
- Can be used to diagnose FPR!! i.e. if not sufficciently steady or below 4 bar then FPR is toasted.
