I went to Milan to run the car last night. Well the car seemed to be running ok so I went to change over to nitrous mode. When I got to plug #1,it looked like it was in there for 30 years. I changed it again and made a couple more runs and it got black and wet. I swapped the coil pack and plug wire, the problem remained. I think that it might be a stuck fuel injector, but was wondering if anyone would have any other suggestions.

Thanks,
Roman