water leaking

[marjoan]

Hi to you all,could someone please help,about 5 weeks ago i had a water leak from under the engine somewere so i phoned the well known mazda dealer from were i bought it some 5 years ago .i had the motor sent to them which cost £140 they had it mot said they had fixed the leak cost £425 drove it back home 70miles seemed ok.2 weeks later go out in the mazda horrible noise stopped called AAthey took it back to same dealer.They put a new rad and thermostat in they said they drove it for a week and it was ok,that cost £425.I picked it up as before drove home put it in my garage,2 weeks later start it up seemed ok put it in the garage gess what a pool of water on the floor,so i started it up and water dripping from under the engine just as the first time.I phoned the dealer and he said he would send someone to see if it was a hose.no one has been he ad an attude on the phone i phoned again today his other half answed and said he will phone.Up to yet no phone call.What can i do next please.

[haydn callow]

Sounds as though it needs the cooling system bleeding properly .......Even Mazda dealers get it wrong.....
It must be done correctly or serious damage can be done to the cylinder head. (may already be the case ..lets hope not)
One way of doing it is this...there are others....
Ask the dealer if he used the "bleed hose"



Bongo BLEEDING Instructions (use yourself or INSIST your garage follows them)



NOTE.. (Before you start) Get a large funnel and cut the spout so the bleed tube will push up into it nice and tight.. Don't take the bung out of the pipe yet.

1..remove the plastic air scoop from under the bonnet.
2..remove the pressure cap off the expansion tank.
3..remove the pressure cap from the rad and fill to brim if it is not already full.
4..replace rad cap.
5..fill the expansion tank to the FULL line.
6..release the rad cap till coolant overflows and tighten rad cap.
7..top up expansion tank to FULL
8..under the passenger seat ..find the coolant bleed tube...remove the bung and push up into funnel.
9..half fill the funnel with premixed coolant.

Note..by raising/lowering the funnel and adjusting the engine revs you will from now on be able to control the level of the coolant in the header tank & funnel.
At no point from now on allow the funnel to empty or the header tank to drop below FILL.

10..start the engine...switch on heaters.....rev to 2500 for 3 mins....idle for 1 min.
11..keep repeating this cycle until the heaters blow hot and switch the heaters off.
12..carry on with the rev 2500/idle cycle..raising and lowering the funnel...you will have to do this for about 30/40 mins.....UNTILL THE BOTTOM HOSE GETS GOOD AND WARM..(stat open).

Once this happens carry on till all bubbles stop and replace the bleed tube bung (wear gloves..very hot)put the bung in as coolant is flowing out so no air can sneak in.

Top up the tank...replace the tank cap.....go for a drive and keep a eye on coolant levels for a few days....should be o.k. If job was done properly.

THE SECRET IS TO GET THE BOTTOM HOSE HOT WHILST BLEEDING (STAT OPEN)

ANY PROBLEMS PHONE ME 01458 270230 AND ASK FOR HAYDN.