i am having a large cloud of greyish smoke come out at around 4500 to 5000 RPMS and it smell like fuel. It started happening after i got the oil changed and i am not sure what is going on or how to fix it. I have to drive like a granny everywhere and cant rev or drive like i want to some one please help me. thanks

 

How long have you had this car?

 

i have had it about a month now it never had that problem before