Posted 20 hours ago

Radiator Expansion Water Tank Cap Compatible for Fiesta Focus C-Max Mondeo

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If you are not loosing coolant I too doubt if you have a head gasket leak. Yes the garage can test for gases in the coolant but if you have a leak then if the gas comes out into the coolant then coolant would pass the same way when stationary. and be lost.

Never remove the coolant reservoir cap when the engine is running or still hot. Let it cool down first. I did, however, realise that there are sometimes no bleed points, because I think that's all I've ever had on any of my cars. Can't remember it being a problem before.You can buy products in Halfords to seal leaks. There is no need to drain the coolant, just remove enough from the filler tank and add and follow the instructions. There is a lot of pressure in the cylinder head so how effective a seal you could get here is debateable,

Clarkson cut holes in his classic Range Rover bonnet on the Bolivia Special to ameliorate an overheating problem, but that would affect resale. Less permanently you could remove the whole bonnet, but I donno how legal that would be in the famously anal UK. I try and be as cynical about garages as the next man, (though/so/because I have hardly ever used them apart from MOT's) BUT I think the innocent-until-serious-grounds-for-suspicion principle ought to be applied.The most obvious valid reason for replacing a water pump would be an overheating incident due to actual or suspected water pump failure . If there was no overheating, the water pump replacement is a bit suspect, but is unlikely to have caused a head gasket failure, which seems to be suspected by the OP. Only reasonably practical desperate improvisation I can think of would be removing the thermostat. This will potentially increase circulation in the cooling circuit, allowing it to remove more heat. I can’t say that doesn’t happen, but I would have thought it was fairly unusual, since thermostat removal is/was quite a common bodge/workaround for overheating problems.

Roll up or remove loose clothing, and keep your arms away from the cooling fan(s). Fans can turn on automatically, even when the engine is off.The mechanic I used took another look at it today and has returned it to me stating that it is in fact a problem with the head, stating he ran some tests and found gas to be escaping and entering the coolant system. He has now offered a short term solution by saying he can apply some sort of leak repair stuff which requires the coolant system to be flushed then the additive put in with new coolant. Does anybody have any experience with this and if so, how long is it likely to withhold? My car is due to have it's MOT in February, how likely is it to pass this? I have a couple of fridge compressors that I could try, but I'm getting used to the boiling method so I probably won't bother..

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