Originally Posted by Mcran

We were having some problems like this at the 1st round of the Pro Series through qualifying. We would put a new plug in and in warm-up and the first 3 minutes of the qualifier everything was fine. Then all of a sudden the plug would go and the engine would die. Ended up being something going on with the fuel tank (Had been using the same tank for at least 6 months). After putting on a new fuel tank everything was good.