My MK2 Punto has developed this gurgling sound every time I start it up. Despite several attempts to bleed the air out I’m still getting what sounds like a a trickling noise coming from behind the heater when starting it up from cold. Now I’ve read several threads on this and have done the usual procedures like undoing the bleed screw on the rad and filling it until it comes out, I’ve also undone the the screw behind the engine and got that to dribble out until it was bubble free. I’ve undone both screws when hot, Luke warm and stone cold and still I get the sound. Yesterday I thought I had a break through as I managed to find a very small funnel with a spout that just fitted in the hole of the bleed valve behind the engine and poured coolant down there squeezing and massaging the heater hoses and managed to expel some air out of the contents of the funnel which in turn emptied into the system so full of confidence I started the car this morning and ..... GURRGGLLEE-GLUMMMMPP-GURRGGLEEEEEEE.....
So is there any definitive way of curing this? As per other cases the car heats up fine, blows hot air, temp needle stays where it should and the fan cuts in but still seems to be hiding an air lock when it cools down.
So is there any definitive way of curing this? As per other cases the car heats up fine, blows hot air, temp needle stays where it should and the fan cuts in but still seems to be hiding an air lock when it cools down.