peugot 106 diesel fuel leak from stop solenoid1994

In mine, the fuel was leaking through the top of the solenoid, and replacement was the only cure. I suspect that your attempts so far have only resulted in the fuel draining out of the solenoid while you have it out to replace the O ring, and it takes a day to work its way back up through the top. If you get a replacement, just make sure you know the manufacturer of the pump - Lucas or Bosch.

thanks for the info will bear that in mind if and when I have to replace the solenoid, which is incedently a roto diesel ( lucas ) so i hope the pump it fits is also a lucas