Engine issue will send Earnhardt Jr. to rear of field for Sunday’s race

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Dale Earnhardt Jr. will start at the rear of the field in Sunday’s Monster Energy NASCAR Cup Series race at Pocono Raceway due to an engine change in opening practice.

Earnhardt’s Hendrick Motorsports No. 88 Chevrolet lost power and coasted to pit road after eight practice laps in the early stages of the 85-minute session. TV replays from his on-board camera showed his car over-revving when shifting, shortly after exiting the 2.5-mile track’s third turn.

Earnhardt’s crew rushed to swap out the engine. The unapproved adjustment will relegate his No. 88 to the rear of the 39-car field for Sunday’s Axalta presents the Pocono 400 (3 p.m. ET, FS1, MRN, SiriusXM NASCAR Radio). Earnhardt has two career wins at Pocono, both coming in a 2014 sweep.

Coors Light Pole Qualifying is scheduled Friday at 4:15 p.m. ET (FS1). Earnhardt tweeted that though his starting spot is predetermined by the unapproved adjustment, competition officials prefer the team make a qualifying attempt. Earnhardt indicated he would make one lap using the race setup to gather information for Sunday’s event.