Hi!
I've just bought an impreza. The car used to be stopped most of the time.
On my second week, as I was driving quite slowly, I noticed that the water temp was too high. It reached almost maximum within the 4km’s I had driven it. I stopped the car, waited for it to cool down, and drove to a gas station nearby.
I noticed that I had no water on the radiator deposit. Filled it up…
Got home, and on the way I lost almost half the water. I found the leaking hose and replaced it.
After this, the car temp was quite stable. But when I push a bit harder on the gas, the car tends to lose some water and the temp goes up…

As anyone ever had this kind of problem?
Is it possible that the increase to the water pressure when I had the leak caused a new one?

Below are the pictures of the replaced hose…

 

You might have an airlock since refilling with coolant, try squezing all the hoses to see if the level in the header tank drops

 

Just looked again at that hole, it looks more like it was punctured rather than split with age harderening, might be worth checking for anything sharpe around there

 

If the car has overheated severely beforehand then the headgaskets may have gone. This can pressurise the coolant.

A garage can do a quick test to see if this is the case.

 

If I drive the car with ease no water seems to disappear.
What do you mean with “headgaskets”? Sorry but my technical English is far from good…

 

Head gasket - the gasket between the cylinder head and the engine block.

Head gasket - Wikipedia, the free encyclopedia

 

I’m really afraid that might have happened. I’m going to place the car in a garage next week.
Is there a quick check I can do at home to see if that’s the problem?

 

I hope it isn't the problem, but when my head gasket went the car drove fine off boost and under 4000 rpm, but when using all the power coolant was coming out of the overflow (behind the headlight to the right of the radiator - its the tube on top of the yellow cap next to the battery in your last photo)

 

After this problem and after refueling with coolant, I was a bit suspicious when some bubbles were appearing on the refueling recipient behind the headlight. But a friend of mine told me to turn on the heat of the car at full power and at maximum hot so that the heating system could fill with water. After this the bubbles stopped.
But when I push a bit hard some coolant disappears which leads me to believed that when the water pressure increases a new leak appears… I’ve also spotted a new wet area on the cover below the car. I’m really hoping this is a simple matter…

 

hi i have the same symptoms.............off boost and drivin normal its fine but after say 15 mins of hard driving the temperature soars................there is water everywhere from the yellow topped tank on the passenger side by the headlight..................HELP?!

 

Scoobies are notorious for getting air locks in the coolant system after a leak or coolant change and they are a difficult to clear sometimes. The normal way to clear it is to be topped up with the internal heater on HOT, the radiator cap off and the revs up over 2 to 3000 when the engine is at operating temperature, this normally pushes the air out. If the headgasket has gone you quite often have milky oil so check your dipstick. I'd also check the carpets in the front footwells to see if they are damp/wet as this indicates a leaky heater matrix.

 

much appreciated, anybody else?!!