Carl Edwards hoped to convert his pole-winning qualifying effort into a solid finish at Texas Motor Speedway, but his run lasted just 187 laps before the engine expired on Sunday.
“I think a valve spring broke and now they can’t get the spark plug out or anything so it beat up that cylinder pretty bad,” Edwards said. “We don’t usually have a lot of engine trouble. Doug Yates and the guys at Roush Yates Engines build great engines.
"I feel bad for everyone at Aflac. We had such a great weekend going. The car, during the middle part of the race we were struggling but we were starting to get it worked out.”
Edwards led six different times for a total of 38 laps. He entered the weekend 10th in the Sprint Cup standings, but was scored 37th when the No. 99 Ford retired to the garage.
“We will just go on to Phoenix and hopefully get another win there and go to Homestead," Edwards said. "We gotta get in the top-10 so we can go to Vegas one way or another.”