AJ Allmendinger’s finish was disqualified in Friday night’s NASCAR Xfinity Series Circle K Firecracker 250 at Daytona International Speedway following post-race inspection.
Wayne Auton, Xfinity Series managing director, said the engine in the No. 10 Kaulig Racing Chevrolet would not hold a vacuum when tested.
“Whenever you go, especially to restrictor-plate style races, the teams are very much aware that everything’s got to be sealed up tight,” Auton said. “It could compromise the ability of the restrictor plate to do its job.”
With the disqualification, Allmendinger dropped from third to 38th in the finishing order.
Kaulig Racing’s Ross Chastain won the race with teammate Justin Haley in second.
