Toilet occasionally not re-filing?

[goldbyron]

Hi

Since I moved in to my house four years ago one of the toilets occasionally doesn't refill without giving the tank a shake/nudge. It was doing it once every few months but recently does this once per week. I am assuming something is getting stuck in the cystern when I press the flush and then dislodges when you give the tank a shake. I would just look inside but it's one of those inbuilt press flushes so not sure if it is this easy. I am to attempt a self repair but not 100% certain what is likely to need repairing, cleaning or replacing? Any ideas...

Thanks....

 

[hanns21]

When you say doesnt fill does the water constantly run into the toilet bowl? Or no water enters the cistern ?

 

[goldbyron]

No water enters the cistern...

 

[hanns21]

Just fit a new fluidmaster ball valve. Your old valve is just getting stuck through age