Engine Intermittently Overheating?
Posted 14 August 2010 - 11:01 PM
Posted 15 August 2010 - 12:07 AM
I could be wrong though as I'm not a mechanic! But have seen head gaskets fail before with the same symptoms...
Posted 15 August 2010 - 08:34 AM
Posted 16 August 2010 - 10:16 AM
Posted 16 August 2010 - 11:31 AM
Posted 16 August 2010 - 02:42 PM
Well if the water is dirty it's not been changed for ages and the engine pobably has corrosion in it... Probably on the HG...
well theres a few options here the water is dissapearing while driving so either the pressure cap is faulty and the pressure is causing the coolant to come out the tank it will also boil as theres no pressure in it a new cap costs a couple of quid ide try that first.
if that shows no results then take the car for a drive now you want to park the car up with the engine running let it get nice and warm feel the top and bottom rad hoses are they both hot should be if top hose isnt its a blocked thermostat if top is and bottom hose isnt then its the flow so rad could be clogged up with rubbish inside or the water pump has failed which is what it sounds like no pump means the water isnt flowing as it should this will cause the coolant to boil and dissapear als o the hot air will be there from the heater then it will blow cool as the heat is taken out of the coolant also look into the coolant tank you should see water come through it.
from youre description ide change the cap then get it checked for a failed water pump before you do serious damage if it is the case youll get the rad flushed and new coolant put in just water will kill the engine as it will boil without coolant in it
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