RUNNING RICH, REASON ?

I HAVE A CPL OF QUESTIONS BUT IM HOPING I CAN HAVE AT LEAST ONE ANSWERED..


First off, can a car that has a electrical problem (Maybe not charging well) cause the car to run rich on account the gas is not burnt properly because of not enough juice ?

Second.

Can a vacuum booster that's not running well cause a car to run rich, real rich because of the loss of vacuum ?

Thanks.

MAPS