Altrick

Problem found - Plug wire for #2 cylinder was faulty.

Hi - New to forum Car ran great and suddenly lost power and sounds like a tractor. Starts and idles smoothly but when you press the accelerator the car barely wants to move. Also it sounds like it has a muffler leak from inside the car but not outside - Strange. New fuel filter - Tried dry gas - No failure codes - New ECU. Any ideas out there? Thanks