So, the intitial emergency seems to be over..

 

But i'm confused now.

 

I definitely had warm air from the heater when I got the car, so there was enough water in it to function to some degree. Certainly nothing to arouse suspicion anyway.

 

This morning however, there was clearly no water in it.:confused1:

 

Where did the water go? There's no indication that the head is letting water through, there's definitely no white smoke in the exhaust. Fact. Nor is there any water in the oil.

 

So if the water isn't going through the head and isn't leaking out through a hose, where the fook did it go?

 

Somewhere down the line, whatever water was in the system has vanished - the coolant that was apparent last night near the rad cap, must have been vapour forced out through high pressure which then condensed...

 

Any idea where my water went (and possibly still going)?

 

thanks

There are various places it can leak from relatively unnoticed

 

The two main feeds (alloy) at the front of the engine connect to two hoses coming off the block. That's the first place to check. Second the water pump. Third, which is difficult to check is the mass of pipes under the plenum that result in a 'water bypass' mod. fourth is the turbo water cooling.

 

Lastly, radiator itself, Radiaitor cap as Richard suggested, top and bottom hose mountings although that should have been fairly obvious all along.

 

No doubt there's a couple of others that will be posted up but try these for starters

 

Might be worth filling it as best you can, starting it to get the water pump going top it up when that happens and then capping it and seeing if you can spot or hear the leak as it warms up. Make sure to remove the undertray so you can see any puddles before any damage is done

 

Water leaks are a pain the proverbial.... On my Green TT I've had to replace every part of the water system including the pump, thermostat, radiator and expansion system PITA

Dip the expansion tank to see if its still full. When water is moved there by push from the radiator relief valve some can be taklen back when the engine cools - providing the radiator cap is working properly. There are 2 valves in the radiator cap. Mine wouldnt pressurise because a small bit of crap was stuck in the suction valve.

 

Does your top hose pressurise properly? Choosing words carefully to avoid double meanins here ;)

Thanks for the comments..

 

No obvious leaks. Certainly no drips from any pipes, havent got the means to drop the belly plate off but its not in the best nick and would leak like a sieve if any water was collecting there...

 

Not sure if my 'top hose' is pressurising correctly.. When engine is idling at normal operating temp it is possible to squeeze the hose with your hand (although it is hot, obviously) so don't know if that's right or not...

 

It is possible there is a slow leak somewhere which has gone unnoticed for a while, but still can't fathom how it went from fine to major malfunction in a short space of time with no obvious leak..

 

will drive her home and check rad level once colled down. But I did brim the rad while the engine was still warm this morn. Guessing it doesn't want to be absolutely full when cold anyway, otherwise it will just blow excess pressure out?

 

Cheers