I think I broke it.

[bobsbus]

i had the same thing with mine!.i was going to tap it out to 16mm from 14mm but as time was getting late i thought i'd "temp fix" it (bodge) so i fitted an extra plug seal and re-tightened it, perfick!!!
have checked it regularly- no leaks yet will have another look at the next service.
bob

[FlowerPower]

O O O the O'ring worked. Thanks all for your replies. I love you all.

No doubt I'll be back crying again after the MOT on Thursday...that exhaust is rusty as f*** and there's mucho smoke at startup.

[Mr Bean]

Hope you are absolutely sure it can't drop out while you are driving as you can wreck your engine in seconds if you dump you oil while driving the van.
OK Granny?
Cheers
Wolfie
I made up a temporary bung for one of my earlier bangers by using an eight milimeter nut and bolt and an inch of 5/16" (I know its not metric) ID fuel tubing. Tightenning the bolt expanded the tube locking the thing in place and sealing the thead. Only to be recomended in eaxtream emergency though.

[timthetrader]

Helicoil it

Same happened to ours and we had it helicoiled job done!