My 1999 s10 truck 4.3 is not running right will not take the gas changed the plugs,wires,rotor button,cap and spider injectors and still not taking gas got no security and new fuel pump getting gas

SOURCE: s10 pickup after warming up truck starts missing

You might have computer problems.

Does the check engine light come on when it starts to miss?

SOURCE: 96 s10 misfire, has new plugs, new distributor

Check the injectors. They are really bad about leaking on the 4.3's.

SOURCE: 87 F150 wont start. New fuel pump, rail,

try changing the igniton module on the distribuitor in most cases it's the problem if you dont want to buy it you can take the ignition module to a autozone and they will check it for free

SOURCE: 1998 chevy s10 new dist cap and rotor fuel pump

sounds like its not getting its initial shot of fuel to start. thier is either one or two sensors that control that. go to your local auto parts store and they can tell you more and get the right part.

SOURCE: 94 s10 blazer dies when put into gear

Sounds like a vacuam leak, best thing to use is cold start spray, by spraying the vacuam lines with this you will notice a change in the idle wherever the leak is at.