RAY: Well, he knew that the first Camry, the one that came in for the emissions test, ran. He sticks the probe in the tailpipe, and opens the hood, and disables the ignition system so that the car will not start. So, now he basically has this car, number one, like car number two. He turns the key, and he reads the emissions on the machine. He reads it's got like 3,000 parts per million of unburned hydrocarbons. Obviously, because it won't start.
TOM: Stuff is going out the tailpipe!
RAY: The injectors are squirting fuel and it's not getting combusted. When he puts the probe in the other car's tailpipe, he's looking to see if it has the same kind of emissions. If it does, then he knows that the fuel system's working. The pump's working, the injectors are firing off. And if he sees that there are no emissions with the same cranking time, then he knows that it's a fuel system problem, and not an electrical system problem. Pretty cute, huh?
TOM: So, what did he find out?
RAY: I don't know, I fired him before he could say so.
TOM: Wow, he's a genius of a guy.
RAY: He is. He's a bleedin' genius. Who's our winner this week?
TOM: Our winner this week is Crispin Reedy from Richardson, Texas.
[ Car Talk Puzzler ]