I hate to give the 02 a bad name, so I try to keep mine running as nicely, and smell free as possible. I'm having some major probs with a fuel smell from the exhaust. I check the plugs and they are fouling with carbon on them after about a week, maybe less depending on drive time. I've had one of the 2 Weber 40 DCOE rebuit, the other one is being done tomorrow. I'm wondering if it all carb related? The cracked header is letting some of the exhaust into the car, so after my comute it smells like I had a mishap at the gas station and the fuel pump won. Any suggestions are appreciated.