Hi,
Thank you for replying so quickly.
I will now going to find out what the diaphram looks like and look to replace this first and if that doesn't work will change the whole syphon.
I think I should get myself on a course to learn the basics of plumbing, as my husband is just no DIY...
This problem began in December last year. we had some work completed at home in the front garden and the workman burst a water pipe. whether it was a coincidence or not, it changed the water pressure in our pipes.
We had to adjust the pressure in our toilet cistern as the overflow was...