Peugeot 206 2006 109000 miles
Good afternoon. A month ago, an important maintainance was done to my car and it left the mechanic with a better compression and power. However, it has recently occurred to me that, after accelerating at 3000 rpm on a straight road and braking, the car lost power and revolutions dropped, as if it were about to stall. Even more, knockings are heard from the engine and the 2nd gear is powerless. Spark plugs have been checked and they are working, but numbers 2 and 3 have a problem of fuel burning. I do not know if it has to do with more air than necessary entering through some hose or if there is another kind of problem. The hydrovac has been checked and it is alright. Another thing is that the exhaust has got a strong smell. I would appreciate your help.