Hi all, Just been checking the air filter when i notice below there is a round hole in the top of the bell housing about an inch and a quarter in size where i can see the teeth of the flywheel, Never noticed it before, Is there supposed to be a cover over this hole or is it normal to open like that, Took some pics but don't know how to upload them on here..

Done it 

Yeah pretty normal. Sometimes has a rubber bung in it but they often drop out. Not earth shatteringly important.

Thanks, I was concerned about water and muck getting in there, But if it was only a rubber bung i'll see about getting another one from somewhere, Thanks again 

Edited 15 May, 201610 yr by Doofy

Yes the hole has to be there for technicians to find the timing mark while cambelt is done. Probably someone forgot to reinstall the bung, you can find a used or a new one. It won't be that expensive.

One of my cars has the same!

Just ordered a new one from the dealers ,£5,,  Hopefully keep any filth and water out.   

The offending article, Looks like VW are flogging hot water bottle stoppers as inspection hole plugs     

Edited 17 May, 201610 yr by Doofy