2013 R56 S mini cooper USA auto transmission
I was driving yesterday going back home from work and suddenly I heard " booom..fsssss" then nothing happened just the car started to miss (cut or don't want to consume gas or something is holding her like something stuck in throat) little while driving and it was look like a normal car not a turbo one (not that much light or smooth) I don't know how describe it..I stopped at home and nothing found..no hoses or leak or anything damaged and no strange sounds appeared..no engine light..just gas smell from passenger side only when I fill the tank full..If it filled less than the half there is no smell
Gas cap changed, spark plug changed, injectors new, fuel filter long time changed, gearbox oil changed (Amsoil) + filter, fuel tank valve changed, vapor canister not changed, dust filter not changed.
One more thing, the gearbox is not that smooth sometimes it's kicking but not hard kicks..
What is the wrong do u think???
Thank u

 

I am not being rude, BUT nobody here can diagnose your car in a forum. You need to have someone read the fault codes with a professional OBD2 reader and investigate you gas odour, why it went Boom and get it sorted. It could be any number of rather nasty things going on.

 

Thank u for ur reply..
I just checked the air mass..one of my friends asked me to do..It look like that it is causing the reduce of the power..and I think the smell is caused because the air mass not reading the mixture well..
When the problem above happened no code appeared and no engine light..
If I fix the problem I will post it..

 

Something similar happened to me about a year ago. I was accelerating up a slight hill and heard a loud "pop". Afterwards I had lost considerable power but had no CEL and engine still ran ok. The problem was the turbo to intercooler house had popped off the left side of the intercooler. I would thoroughly check all of your boost side hoses from turbo to intake manifold to make sure none of them came off or developed a rupture.

 

I was wrong..u r were right S-2013..I found the lower hose moved out from the metal hose (I change the noise maker to an SS metal hose) and I just returned the noise maker and fitted it again and the car now OK..but the only thing remaning is the gearbox shiftting like kicking!! I don't know why???!! look like the RPM is high..