Over the past couple months I've noticed steam coming up from under the bonnet on the odd occasion, e.g stopping in traffic or at lights after driving for a few minutes. Changed coolant cap, pressure test didn't show loss in pressure, but still it happens. Today, I was able to stop and get out the car within a minute of it steaming, and I *think* I've pinpointed where it's coming from.
Could anyone please tell me what the hose in the photograph is called, and if it does indeed carry coolant? You can see that it's a bit wet, and below it i managed to get some paper and it was pink in colour.
The bottom of the image is the fan/radiator towards the front grille.
