Door latch issue

[Motorsport Artist 0]

My driver's  side door latch wont click shut properly.  It clicks so the door doesn't open but wont double lock. I cant see anything wrong with it at all. The door appears  to be in line 

Any suggestions please? There doesn't appear to be any adjustment  at the latch end.

Cheers.

 

[Tom Fenton 1,541]

I had one like this, I tried but couldn’t sort it. In the end I swapped it out for a second hand one that worked properly.

[davemar 16]

They can get gummed with with dirt and old grease. I had a similar problem with mine, so I removed it and soaked it in paraffin for ages to clean out all the crap. Put on some fresh grease and seems finenow.