I think that the only way you'll fix this is to strip it down and look. Some oil pressure pipes have an olive at the end, so you may need a new pipe. On the Midget I cleaned it well and used araldite wrapped in electrical tape and it never budged!!! On that car the pipe had developed a tiny pinhole.

Can you take a photo?


DaveW
'05 Red Roadster S1
'16 Yellow (Not the only) Narrow AR GDI Plus 4