Hi Jim,

Thanks for your reply.

I am staying in Malaysia.

The pipe connecting the tank outlet to the bowl is not metallic but plastic.
There is also a thick rubber glove-like cover which holds this pipe to the bowl. Most times, this rubber cover is 'pushed out' by the water pressue when I flush the toilet.

I hope this gives you a better picture of what the problem is.

I would appreciate your advice.

Thank you.