I have a seperate hose that vents the gas tank, but I will check to see if it is open. The motor does not stop running, it will run alright in "cruise mode", but when ever I try to get agressive on the throttle, is when it is not happy. Before it starts acting up, I can floor it with no problem. I am driving it currently with the hood off, so I can't imagine it is a vapor lock type of thing. I thought about the coil, but have not checked to see if it's getting hot. Thanks for your reply.