Could someone please take the time to read. My issue started with my AC and alternator belts sounding rough and loud. Following week my oil and coolant light came on. Followed by grey smoke. Carbon turnover now. One plug had oil on the tip all smelled burnt. Replaced still won’t start. Could someone please take the time for insight Thank you.

 

what do you mean by "carbon turnover"? If you have belt noises, then the belt has to come off and the tech would inspect all the accessories and the idlers. Everything should rotate freely. Now then, since you started seeing smoke, then you know something is getting into the combustion chamber - could be a head gasket issue (you didn't mention if the car overheated but that could warp the head) could be a PCV issue (oil separator is letting oil into the intake) or worse. You probably would need a compression check and/or a leak down test to make sure the engine internals are in order, then inspect the intake for oil /dirt (at the MAF sensor), finally check for head gasket issues - coolant in oil, oil in coolant?. Its also possible the problem may be in the turbo itself. Any CEL codes thrown?