
- Look out for vibrations that you might be feeling in your gas pedal or your steering wheel while the engine is running.
- The smell of fumes from underneath or behind your vehicle will increase with problems.
- A slight decrease in your fuel efficiency ratings may be noticed.
- Look for minor leaks that may be taking place at the rear of your vehicle.
- Your exhaust and muffler are designed to decrease emissions and noise from your engine. If a major problem is taking place, your exhaust will seem to be much louder than it normally would be when you start the engine up.