XJ40 1988. Petrol flap catch sticking. I have to open the boot and pull or push the plastic tab to release/lock my petrol flap. I have applied heaps of Wd40 and lubricant but still the boot lever is very stiff and no longer automatic.
I had this same issue a couple months ago on a 1988 car as well. I ended up removing the actual catch pin from the underside of the gas door and then using two part epoxy I glued a magnet down to a piece of steel that is screwed down inside the gas door closure area and now the magnet holds the gas door closed but with a slight bit of pressure from a finger it is easily possible to open the gas door.
If you like I can take a few photos of this next week.