ka24de vacuum lines ...

There is a vacuum source, a nipple, located directly under the 1st runner ( from front of engine). Its leaking air, so i put a pipe on it, and blocked it off, i can hear the hissing off the area it connects too, but can’t see it.

This stupid vacuum leak is causing all my idle and starting problems.

Does anyone know where this vacuum source is suppose to go? I 've been looking at a vacuum diagram on NICO, and well, I more confused then when i started.

HELP ME!!!

Can you post pics so it could be seen which pipe you talk about? Ka vacuum systems own the engine, whoever understands them is a smartass.