Misfire, Running Really Rich, White Smoke, Powerloss

[a216vcti]

I'm not sure what this is, smells of gasoline odor about the vehicle, pours out white smoke, the long term fuel trim is in the -20% through -40%. The voltage seems right, mass air flow seems about 4g/s. I'm suspecting a leaky fuel injector but don't have a way to test. Does anyone know how to tell which injector is bad?

 

[wemslie97]

Doesn't white smoke indicated head gasket issues? Running rich would cause black soot (unburnt fuel) inside tailpipe.