injector problem?

[dashboardrunner]

ok not sure what the problem is... the car has problems starting like in the morning or after its set for a little while... its always been like that so its not really uncommon for my car but its always run good after startin.. it has a slight miss in it now while its at idle...but while im driving, if i punch it it stutters real bad... but if i ease into the gas it'll go pretty good... i thought it might be an injector problem and so i put a bottle of injector cleaner in it... hasnt seemed to help yet and it might have actually made it worse.. before this started, it kinda would like backfire through the intake and blow the vaccumm line off the throttle body... dont know if this is related to the other problem or not.. and the problem doesnt seem to be so bad in later gears... but like in second if i punch it and try to run up to redline it makes a real killer sound like its boggin real bad and shutters the whole way... the speed seems to be there still, it just stutters real bad all the way up to speed... like i said though, if i ease in the gas, it doesnt do it... i didnt know if this would be an injector problem cause theyre still original or if it might be an ignition problem... everytime i've had a miss due to the plugs though its thrown a code... so far no codes.. i just changed the plugs in it not to long ago but didnt know if the wires might need to be changed? is there a way to check? also changed the fuel filter not to long ago to... im not sure if it would be an ignition problem or a fuel problem... fuel pump is workin still so i dont think thats it... im thinkin bout tryin some seafoam in it to see if that helps out any... im tryin not to spend to much fixin it but i for sure gotta fix the problem... oh and i forgot, since the few times its blown off that vaccumm line, i can open the intake and theres like unburned fuel in the bottem of the intake hose like where the throttle bodys hooked up to the plastic hose... not sure what that problem is and if its related or not... sorry this is so long, but recently i've been considering gettin rid of the bird just because it keeps givin me problems... as soon as i get one thing fixed something else starts happenin and its pissin me off... anyways any help you guys can give will be greatly apreciated... i dont wanna have to trade my bird but if i do i do... somethings gotta be done... thanks for any help.. i'll keep on this post cause i need the problem resolved... later...

[dashboardrunner]

forgot the car info.. sorry... its a 98 firebird with a 5 speed.... its got around 97000 miles on it... thanks for the help

[98 3.8]

My car acted kinda like that when my fuel pump was going. Sometimes when I gave the engine throttle, it would nearly stall. So, that might be an issue. Just because the car is still running doesn't mean the fuel pump is dying.

[v6man]

did you check to see if your coild packs are loose and the plug wires on the coil packs are on there snug???

[dashboardrunner]

it doesnt really act like its going to stall, it just stutters a bit... is there any way to test the fuel pump to see if its dieing or no? the wires are snug on the coil packs themself but didnt check if the coil packs are snug... i'll check and get back... would i be able to tell if the plug wires need to be changed? i read on here about people doing this but not sure if they just do it, or if they can tell just by looking if they need to be changed... i'll be back...