New concealed cistern - poor flush

[Bargain Bucket]

Just finished a DIY bathroom refurb. New toilet has a really poor flush with very little water delivery and very weak water output. It was whatever cheap-ass cistern the supplier gave me "for free" with the pan. Am I likely to resolve this issue with a quality concealed cistern and if so, any recommendations please? Or will the cheap-ass cistern work as well as an expensive one if I perform some kind adjustment on it?

Many thanks.

 

[whistler]

Don't they usually have an adjuster inside to control how much water is released. Mine can be adjusted between 6 and 7.5 litres on full flush, or half of this on a partial flush. I think it's usually just an adjustable screw.

 

[Gasguru]

You haven't left the flush pipe too long going up into the cistern?

 

[lostinthelight]

Is it dual flush and only the part one working..
Ive found SF Flomasta cistern to be excellent..it will flush solids on a part flush .

 

[durhamplumber]

Concealed cisterns,,nightmare

 

[muggles]

As above, are you sure the horizontal section of the flush pipe isn't actually running uphill? Also is the cistern filling properly?