Another hurdle in my non stop process of getting this K5 to run properly. Little back ground on it. It has an electric fuel pump somebody swapped in before I got it, mounted to frame rail. I just rebuilt the carb about 2 weeks ago. It hasn't ran more than about 5 times only for a few minutes at a time since the rebuild of the carb. Last night, I was messing around with the blazer. I had the key in the accessory position for about 10 minutes. I started it, it ran really rough and blew tons of blck smoke. I was like WTF, so I popped the hood and took off the air cleaner, puddles of gas on the intake. I turned the key to acc. again to turn the fuel pump on. I watch as gas just fills the carb and begins to leak out of any orifice it can, especially around the accelerator pump shaft. What is the deal?