Originally Posted by subzero

Hi Mick,

When you say stops, do you mean the motor stops running or is it the motor keeps running but it doesn't produce a jet of water ?

If so, its cavitation inside the ventury it can suck air in and it forms a bubble which will not get pushed out as it gets trapped just make it a little bit heavier or lighter at the rear, it should cure it. My Pibber does it when it leaps out of the water but just for a second until it bites then its off again.

The outlets are intended to be 3/4 submerged not fully as this will stop the air comming out

Hope this helps.

Regards Sub.