Our toilet won't flush all the way. When I look in the tank there is air bubbles coming up when the flapper is opened. Would this cause it not to flush or is there any other problems and what can be done to fix it please?
Thank-you

There are three quick reasons for a toilet not to flush properly. #1 make sure the tank fills to within 1" of the top of the over flow pipe. #2 Reach inside the sump area of the bowel (I'll wait while you get your gloves) and fish around the 1" hole making sure there is no debris or build up of crud. #3 If both #1 and #2 are OK get yourself a toilet rodder and go in about 6' with the rod.

Thank-you, It was that 1" hole that was plugged it flushes find now.
Thanks again

Great to hear. Buy new gloves for next time.