This place has bailed me out more than once so I'm back for more help. I have an '89 Iroc with a 5.7 tuned port engine. About a month a go I put some lucas in the gas tank and right after that the car started running bad
It would only run on 6 or 7 cylinders and when i went to restart it it wouldn't start even if it ran for just 10 seconds. Turns out I had real bad injectors ,so i bought new ones. well now the car always starts but won't stay running. it revs up and dies unless you feather the pedal and keep it going . could this be a bad egr ? I'm not shooting any codes so is this just some vacumn leak I'm kinda stumped right now. Any ideas?

 

thanks ineeded that