Vauxhall Astra 1.6 Sxi 2001 Oil Filler Cap

[rexhunt]

My oil filler cap is extremely loose. Just a slight flick and it comes undone.
Nothing to do with oil pressure, vehicle doesn't have to be running.
Anybody else experiencing this?
Is there a solution please?
Thanks

[gingejbee]

Not familiar with these cars....but aren't there some springy bits of metal under the cap that could be carefully bent to make it tighter (am thinking of cars I owned in the past)?

[rexhunt]

I know what you mean but this is not like that.
Thanks anyway

[gingejbee]

OK...how about...is there supposed to be a black sealing-ring inside the cap, which is now missing? (I'm now officially out of ideas!)

[rexhunt]

Everything is in it's rightful place. That's me stumped too!!

[TWR]

Inside the cap, replace the Black seal ring, is the cap the right one? there's 2 lugs on the inside of the cap, adjust these.

[tonyav]

Try adjusting the lugs as TWR suggests, if that fails get a new oil filler cap.
http://www.ebay.co.uk/itm/VAUXHALL-Astra-Mk4-1-2-1-4-1-6-2-0-1-7-2-0-Diesel-Turbo-NEW-Oil-Filler-Cap-/110982331715?pt=LH_DefaultDomain_3&;hash=item19d70ffd43