I have a 4.3 engine wont start in morning unless i pour gas in throtle body wont give a shot of gas when i turn on key but will start all day after first start in morning

Without knowing the year, make,model,and mileage it sounds like you have a partially blocked fuel filter. the problem occurs after the vehicle sits for long periods of time such as overnight. the trash in the filter has time to settle and block the fuel line so the engine doesn't get the fuel it needs to start. by pouring gas into the engine you are allowing the engine to start and pressurize the fuel system and force the blockage out of the way enough to allow fuel to the engine, as long as you start it up every so often the the trash in the filter cant settle enough to restrict fuel flow. this will be a very good place to start looking for a fuel flow issue.