JGR unsure of root cause with engines
CHARLOTTE, N.C. -- Joe Gibbs Racing officials are scrambling to uncover the cause of an unusually high number of engine issues during the first five races of the Sprint Cup season.
JGR had two issues this past weekend at Auto Club Speedway in California. The engine in Joey Logano's Toyota had to be replaced on Saturday when valve leakage was discovered following the final practice.
Denny Hamlin's engine failed 105 laps into the race due to an unrelated value train issue, leaving last ...
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