hey guys
lately i have been having problems with code 45, which is a leaky injector. i am trying to fix this issue. i was just wondering why it seems like the car runs great until the CEL pops on. after the CEL pops on, the hvac starts to smell like exhaust, it starts to idle rough, it feels like it loses some top end. when i clear the code, the car drives great, with none of the symptoms above, until the light pops back on.


what is causing this??

TIA
Matt