kelle

Hello my name is Kelle, Owner of a 2006 c230, that I'm afraid may have some problems, due to a mistake on our behalf..my coolant check light came on, husband added coolant, around two weeks later, check engine came on started flashing, I parked it, checked codes, shows misfire on 4 cylinders, changed all six plugs, five days later engine light appears again, code says system too rich, did the whole mass air flow thing. Upon doing research ,I ran across some info about the problems that may occur do to adding the wrong coolant, I ask my man what he put in, well, what he didn't do was dilute the coolant..HELP, NOW WHAT DO I DO?
Thanks