Friend of mine on his 92 prelude si with h23 automatic snapped his timing belt and bent all his valves. So we did a head swap with a h23 head. Intake manifold has a new gasket and doesn't leak. Put piston #1 at top dead center. Cam arrows point straight up, spark plug wires In the right order. Vacuum lines attached in the right spots. After the car idles for like a good solid fee minutes she will run rough, then die. If you give it gas at idle it dies. Idk what it is. I've tried everything for him. But I'm too used to working on my ZC 87 integra. Someone please help.