Thanks to all those who have taken these photos, they are very helpfull to see the hardware before opening especially when it is expensive.

The problems I am facing since a few years with my car, which by the way is fantastic, is an erratic loss of power while running which can go up to total switch off, and some times unstable iddle.

I have posted my concern on the post "loss of power while running" with some suggestions and ideas from members.

From the photos you provided I have a confirmation of a possible leak that, if the fuel quantity is big can induce malfuctioning of measurement the air mass flow device.

I expect changing the O-ring on the central cylinder which is moved by the air mass measuring system.

I have been for a long time investigating the way to monitor/measure the fuel pressure on the upper and lower chamber of the FD while running to see if the pressure on the Injector is the cause.

Have you any idea if chaging this O-ring is possible whithout dismounting into part the whole fuel distributor?

I will let you know