Nissan Altima 1995 water leakage

I have a Nissan Altima 1995 2.4lts 4 CIL. The problem is that I have a water leak in the back just below the injectors (admission multiple), I thought they were the water stamps since the hoses of the heating are in good condition, but today observe that the escape is about 10cm above the seal and seems to be a small hose that looks at the engine and just below the multiple (I say it seems to be because by the location I do not see very well). Does anyone know if the leak is that hose, do I have to remove the multiple to change this hose? Or can that of the water leak be another reason?
PD The leak is presented only when the engine turns on for a while and turning it off, that is, it is hot the engine to throw the water. At rest the engine does not pull any water.

Friend the ideal would be to disassemble so that you see well, but the detail is that if in low it does not do so you may not see the water and disassemble through the pure, I am of the idea of ​​taking out everything that bothers to see well because because of the place you say it can be blowing the cylinder head or that it is this trisada or broken, or the block is sure to disarm luck.

I know what time has passed the publication, did you manage to solve the problem?