hi i need help
i flush my coolant system .
and refill it with new preston coolant
than start the car and do bleeding step by step from mazda manual servis
2-3 min on 2500 Rpm
5 s on 3000 Rpm
coolant level down in reservoir so i refiil it to max line
now when car is cold and i start the car i hear the water current sound from dashboard .
i need your help to solve this problem .. how can bleeding my car ??
thanks .

 

There's air in the system. 1st make sure the car's cold, then take off the radiator cap, and start the car. You should see a few bubbles coming up as the car warms up.
Give the radiator hoses a little squeeze, that sometimes releases some bubbles.

eventually the car will warm-up enough so the coolant begins to overflow out of the radiator. Once that happens, put the cap back on. You might have to repeat this a couple times. Just make sure that car's cold before you take off that rad. cap!

How's that cap looking? Nice and solid? Is the rubber grommet still soft and pliable? A new 1.3bar cap might be 10 bucks well spent.

Hopefully this helps. Good luck!

 

It may be caused by a under-filled cooling system.

 

The sound is probably coming from the heater core, when burping the radiator, turn the heat up to the highest setting & make sure you have it on defrost to get coolant to "the highest point"