99 escort rough idle

[geers182]

I put some penzoil injection cleaner in my car, so now i guess i just have to wait. But i also tested my egr, seems not to be leaking. when my car is idling very poorly, i can hear a real exhausty, puttering sound from the driver seat (the kind that would give you a head ache after 5 minutes of it.) so i'm guessing that would have to be either headers are leaking, or my intake manifold gasket is leaking.