Coolant is coming out of where the pink arrow is. The photo is taken from under the front of the car looking up with the plastic undertray removed.
When I say coolant comes out, I mean I pour it in the header tank and it comes straight out. Without the engine running. The header tank is empty again in a few minutes.
I looks like it comes from the seal of that bottom pulley. I guess it may be higher up but looking from the top down I can't see it escaping any higher up.
I haven't had the gauge go over 90ºc and the 'low coolant' warning hasn't come on so I seem to have noticed this leak as soon as it started.
The water pump and cam belt were changed 4 years ago when I bought the car.
So I guess I'm asking - is it likely that it is actually leaking from seal of that pulley? And if so how big a job is this to fix?