the soft line that connects from the stainless 300 dergree line to the FPR was leaking on the fpr... looked like the clamp failed as it wouldnt tighten or loosen, getting a new clamp and hope the smell is gone.. I found it by leaving key on and following all lines, I moved this line and fuel sprayed out.. could this have caused my stumble? I was going to run codes but disconnected batt to do some other work.. DUH..