Wierd problem HELP!?

OK this morning I my b16 integra at idle the rpms just went down slowly, and thn th ngine died and I cranked it for like 5 seconds didnt work so I pressed down on the gas and crankeditforlike 5 seconds more and it started after that. Why did this happen its a b16a swap it runs perfecteven the a/c works so obviously whoever installed it knew what they where doing. What can be causing this?
Ryan

You have an invalid subject. You need to be more descriptive. Read the FAQ and try again. Also because this should be in Hybrids since you swapped your engine.