I didn't know which forum to post this in so I put it in the general one.
I am putting a 2.5n/a into a series 3 and today I set about firing up the engine before I go any further, It was pretty much a bench test so I had a jerry can and a frame to hold the filter etc, and when I looked underneath in a puddle of diesel was this part.
It is a spring about 15mm by 5mm with a little blanking plate in it at the bottom(top?)
It looks like some kind of non-return gadget but as I had off most of the fittings I have no idea where it goes or quite honestly if its even from this engine!!
The engine did fire up with the aid of easy start so its not essential , and nothing went bang or even remotely crunch, any ideas would be appreciated because like I say I have no idea,
thanks for looking.
Sorry about the pictures my phone camera is real quality