coolant leaking from exhaust manifold?

[sparticus102]

So i just put in my rebuilt ka24de but there is coolant leaking out of my exhaust manifold which is making my car stutter and sluggish does anyone know what might be the problem?

[Sileighty_85]

H/G or cylinder wall is craked

Eithe H/G is improperly Tourqed or block/head was not cleaned good enough before installation
Or the Head is warped and was not machined before installation