Its all about giving us clues to solve the problem,,,,,and narrowing it down to one area,,,,,,like what was the last thing you did to the van before it started acting up,,,,,,,or was it always that way,,,,,,,,you say it acts different when the engine is warmed up than when it is cold,,,,,,cold seems better,,,,so lets break that down,,,,,,what is happening differently,,,,,,what are you doing differently,,,,,,,if you say you always got spark,,,,,then lets go with fuel,,,,,maybe carb needle leaks and engine floods over,,,,,drys up overnight,,,,,thats why you look down carb after you park it,,,,,,step on gas,,,,,see if there is a puddle down there,,,,,,and if you crank the engine with the gas pedal pressed down,,,,,,you let more air in and it will mix with any extra gas that might be in the intake manifold,,,,,no gas flows out of the carb when you crank the engine with the gas pedal floored,,,,,,crank that engine without stepping on the gas pedal and the carb adds more gas,,,,,,,so if the engine is flooded out,,,,,you don't want to aggravate the situation by cranking it and not holding the gas pedal to the floor. We usually go round and round with postings until we get down to the source of the problem, so sometimes it takes a while to solve a problem,,,,,,,