2000 honda civic d16y8 motor ...does anyone know what the purpose is of the hose the connects to the top center of intake manifold is for?? the hole it routes to goes nowhere. i put a 96 head on my car can i plug this hose.it would normally seal off at the head but the 96 has a hollow spot where the gasket would normally make a seal?????????

 

You already started a thread about this

https://www.hondacivicforum.com/m_51.../tm.htm#511845