Audi fear recurring problems

The car lost 25 minutes and the lead of the Le Mans 24 hours after pitting twice for repairs the engine misfired.

The team initially changed the black box to attempt to cure the problem. However, after the car's new driver Tom Kristensen reported further misfiring, he brought the car into the pits to change the fuel injectors.

"We've had this problem before in testing," Juttner told autosport.com. "It is not a completely new problem and a typical thing on the engine.

"You can only change these parts - that's all you can do to fix the problem.

"From what we have seen up until now on the project is that it happens after two hours some times, and then other times it is forty hours."

"Tom has reported that the engine is running cleanly now.

"In a way, we have to keep our fingers crossed it doesn't happen again on the other car.

"But we can come back. That's Le Mans. All sorts of shits can happen."

The car currently runs in 12th, seven laps off the leading Audi No. 8.