I took my 2000 procharger supercharged TA to advance auto today to get the codes read. It had been having a weak acceleration and a big hesitancy when just cruising. Really jumpy. The scan tool came up with a "system too lean" "Injector circuit open" code and a "cylinder number 7 misfire" code. Has anyone had any experience with these codes?? Im completely lost on where to even start with the injectors, and lean codes. I bought the car with the supercharger installed already, but i know that it had bigger injectors installed as well. If someone could give me some advice on where to start thatd be great!!!

Thanks

 

Could be a vaccum leak, the tune is off, bad injector/plug/wire in #7, ect

 

how would you go about troubleshooting any of that?