Exhaust Gas Analyzer

I have a customer that brought their 2004 Ford Taurus into my service shop complaining of an exhaust smell in the car. I have looked for all the obvious places exhaust could be leaking but I can't seem to locate anything. Can you recommend a good diagnostic tool to for locating exhaust leaks?

For those hard to locate exhaust leaks, I would recommend acquiring an exhaust gas analyzer to your collection of automotive diagnostic tools. An exhaust gas analyzer will measure the types of gases present in an exhaust as well as locate exhaust leaks. The Universal Enterprise CD2000 exhaust gas analyzer is a good choice if your main need is simply locating a leak in the system. This unit will sniff out the source and sound a buzzer to alert you to its presence.