Volvo Repair: exhaust, air fuel mixture, o2 sensor

Question
Hi i went over a bump and got a hole in my exhaust and now its got bigger im losing compresion could that be down to the hole in the exhaust or is that unlikely
thanks
garry

Answer
You're not losing compression just a little power. Too big a exhaust leak can affect your exhaust back pressure which you do need for car to run right. Also depending on where the leak is and what model and year the car is, the o2 sensor may be reading false air and your air/fuel mixture may be off. Repair the exhaust leak and the car should be fine.