I just wanted to ask here before I took my car to a mechanic.
Yesterday I let my friend borrow my car overnight as his is getting fixed, he brought it back to me this morning and it is idling at 1500rpm. I asked him if he did anything to it and he told me that he revved it to 6000rpm while in neutral after idling it for 5 minutes.
When I turn the key to the "ON" position, the buzz you normally hear is softer than it was before, when I turn the air con on half way the revs drop to about 1250 and when on full down to 1000.
There is also fuel spraying out of the exhaust.
I would really appreciate any help as I am currently stressing out.
EDIT: The oil cap smells like petrol.

Thanks.