Ryanlovesake70

So ive rebulit most of my 4k i put it all back together i litteraly just finished opening the new thermostat the day before it ran an idled sweet, i started it the next day then it was running sweet it warmed up i was changing the revs (at about 950rpms idle) till i was happy an then obviously gave it a little squirt then bang now it doesnt wanna idle it self like it still kicks over but it wont start unles i give it gas ?