FPR

[france320isco]

Installing the Fuel Pressure Regulator:

I'm re-installing the stock FPR.

How many O-rings/seals have to be installed between the fuel rail and the FPR?

One is for sure, and is also reported on the real oem site.

i'm asking this cause i have installed two times the stock FPR with new o-ring AND a hard plastic ring that i wondered it was there when i removed the FPR the first time.

I just put sequencially the plastic seal and the rubber o-ring on the FPR probe between FPR and injection rail, but the rubber o-ring keeps breaking and so leaking gas.
(two times now).

help?

[Jeroen]

The hard plastic ring is to be installed on the fuel injectors only. The FPR only uses one black rubber o-ring... which is the same type as the ones used for the injectors.