water leak

[s13k'spignose]

whats up nismo forum, well i just bought my 89 s13 zenki w/ka24e and its the bomb love it!!!!!!!!!!!!!!!!!!!!!!!!=), anyways i have a water leak,see pic, on this pic the lowest hose that connects to the block of the 3 green marked hoses, is where my water leak is right where it connects to the block. this hose then connects to a tube which runs trough the bottom of the intake manifold http://img265.imageshack.us/im...g.jpg when i start the car and idles or drive it water will start to leak, it seems like the tubing my be clogged because pressure will build up on the hose and shoot the water out it looks like the hot water wont exit the block at that point and will just build up until it gives out and my s13 temp will rise like hell, like i said the hot water won't exit the block and just heat up, so thats my thought (or could it be my radiator?) so the guy i bought it from told me that the intake manifold had to be replaced because a mechanic broke the hose or tubing something like that, and he gave me a spare intake manifold but im not sure i have to replace the whole manifold maybe just the tubing, so all you REAL AND TRUE SILVIA LOVERS THAT KNOW YOUR WAIT AROUND THE KA24E PLZ HELP ME ASAP TELL WHAT IT COULD BE OR CORRECT ME I ALREADY WANT MY S13 UP AND RUNNING THANKX GUYS ILL APPRECIATE IT! NISSAN LOVE!!!!!!! PEACE IM OUT