As title, sounds like I have a water feature going on in my footwell.
I aim that its a airlock in my coolant and I can hear it coming through my heater matrix when I rev the car.

Any ideas on how to remove the airlock Ive tried topping up the bottle with the engine running and heater blowing on hot but its still there.

Thanks.

 

I had that for months and the only thing that cleared it was a track day. Not a tinkle since - good excuse for the missus as well.

 

Dont want to thrash it in case the old girl cooks herself.