NASCAR Cup Series

Kyle Busch will start from the back

Published May. 13, 2011 1:00 a.m. ET

foxsports

Kyle Busch will start from the rear of the NASCAR Sprint Cup race Sunday at Dover International Speedway.

The No. 18 Toyota ran 22 laps and was the sixth fastest car in morning practice at Dover before his engine failed. Busch's problems continued during Happy Hour when he slapped the Turn 2 wall 16 laps into the second practice and was forced to take his car to the garage. According to SPEED's broadcast, the team was replacing the crush panels after the incident.

Busch’s part failure appears to be a valve, but not a coating issue which seemed to spark a rash of engine problems for Joe Gibbs Racing at the start of the season. All three JGR racers -- Busch, Denny Hamlin and Joey Logano -- had engine failures during the first five races of the season. Hamlin was also forced to start the race at Las Vegas at the back of the field due to an engine failure earlier in that race weekend and Logano did the same at Auto Club Speedway.

NASCAR’s Kenny Lawson, who oversees engines in the Sprint Cup garage, said that whether the engine failure comes before qualifying or after it, if a team has to change an engine the driver must start the race at the rear of the field.