I have a 94 Honda Civic Si.

Last december my heater hose broke, the engine overheated and the head gasket burst.

I just finished rebuilding the engine. Changed practically everything.
However, my idle does not work while car is cold.
Once car heats up the car will not die on me, but it still idles rough.

Was told it could be the fuel pump, however, I changed that a few months ago.
Also changed the fuel pressure regulator and still no luck.

Does anyone have any words of wisdom.

thank you.