Missing distributor seal possibly causing rough idle at startup?

[lraklrak]

I just installed my cylinder head and every thing that goes with it back on my 1993 Toyota Camry 2.2L engine. Cleaned the IAC, Throttle body out as well as anything that required cleaning. Everything back in place as removed. Now when I go to start it, it starts fine, but the idle is really low and a bit rough to the point of stalling. I let it run a few minutes pressing the gas down a little and then it idles fine. I checked all connectors and everything is in place. One thing I noticed and I am not sure how much of an affect this has. I looked carefully at the distributor cap and did not notice a rubber seal. The only places that there are no gaps between the distributor cap and the distributor unit is where the cap is mounted with screws. Looks like there are gaps all around. I double checked to make sure the cap is correct for the vehicle and it is. I called the dealer and they said yes there is supposed to be a rubber seal. I ordered one ($10.95) so until I receive it I won’t know if moisture could be causing this problem or not.
Any other suggestions would be really helpful.

[mazdaverx7]

moisture can collect in the cap and cause a rough idle. keep us posted on that issue after you get the cap seal installed. did you install new plugs and wires? if so, were the plugs correct and were they gapped to factory spec? have you checked the timing since the head job? finally, did you replace the fuel filter when you did the head job?

[hill8570]

Doubt the dizzy seal would cause that sort of behavior. I'm leaning toward the IAC being sticky until it's warmed up...might be worth giving the IAC another dose of cleaner from inside the throttle body.

[Kenny_McCormic]

Cleaning the IAC changed how it functions back to normal, the computer had to "relearn" how to idle with a fresh IAC.