What may cause excessive fuel odor from exhaust pipe while engine is idling?

The original fuel injection it came with. The car runs great but it seems to use a lot of gas.

One question here was whether the car is carbed or fuel injected? Then I get a responce that tells me they all fuel injected. I say the car runs fine, then I get a responce that says maybe its not sparking. The best one is to tell me to get it checked out, could cause damage to the converter. DAAAAAAAAAAa Thats why I came here to begin with. This site sucks big time. What a bunch of dunces.