1996 chevy silverado 1500 not wanting to run?

[lowesteamisthebest]

when you first roll it over it sounds like it is not getting enough gas but once started it seems like it is getting too much. i just changed the fuel pump and sending unit and the fuel filter. today it didn't try to fire so i am thinking an ignition problem. the distributor, plugs and wires were just changed not that long ago. one other thing i noticed is that seafoam did nothing to help it run better so i don't think it is fuel related. i live in WI so it is cold but i ran it for a hour and it only warmed up to 150 degrees.

feel free to tell me what you think even if it is just an educated guess.

 

[alley.k]

map sensor
take it to auto zone and have it checked on the analyzer
or go to a garage and have them check it
it could also be pvc valve

 

[ariat166]

Bad oxygen sensors are a possibility. They contribute to how rich or lean your fuel mixture is.