The smoke machine placed inside the luggage compartment

Finding leaks where exhaust enters the interior.

Method uses a shop vac, a smoke machine, and a stethescope.

The smoke machine is sitting on a piece of cardboard (to catch any drops that may come out of the smoke jet). It is sitting back by the seats, pointed toward the rear hatch. The power and remote cords are routed out of the passenger window, with the opening sealed up with tape and cardboard.