run it with the cap off till it erupts as the rise in coolant can just be trapped air in the system,,oladiti wrote:So far I have carried out the 50 seconds test, there was pressure built-up, with a hisss! sound when cap was open, but no eruption.
I then went on to run the engine with cap off, slight bubbles soon clear away and water remain stable for about a minute and then!
the water level slowly rises up to the little safety hole on radiator neck, I mob this off with a rag and pop back the cover and went on to try and run car up to running temperature to encourage the fan to cut-in, but before that temperature could be reached the water/coolant started flowing out of the cap.
Switched ignition off and left car for about 2 hours, Upon my return, I decided to open the cap with a rag, even though the radiator had sufficiently cooled down, turned the cap slowly the water erupted on to my face.
Also one other thing I noticed was that only the top part of the radiator that is getting hot
Tomorrow 19/5/15 I will be conducting a chemical test at my local garage.
once it has chucked up/out what it wants re/top the system and continue running with the cap off till the coolant sinks, then top up as required till it stops sinking,
Tim Leech wrote: I can't see any leaks but the cars running ok and doesn't seem to be smoking and the heaters hot.
I'll keep an eye on it.
sorry if i missed something Tim, but if this is a diesel they usually just pressurise the system and chuck it out through the tank cap if they have H/G failure,
they will also push out coolant if the tank is above the correct level