Cosworth is to investigate the cause of Lucas di Grassi's engine issues during the Turkish Grand Prix in Istanbul.
In his first weekend with Virgin's revised VR-01, di Grassi suffered two separate issues during the meeting – including one that left the team racing against time to make it onto the grid for the race.
Speaking after the weekend, Cosworth's F1 general manager Mark Gallagher admitted it was disappointing to have run into problems and said Cosworth would now work to ensure the issues weren't repeated.
“It was less [than] satisfactory that we experienced two different engine issues with Lucas Di Grassi's VR-01 over the weekend that demanded swift attention,” he said. “After a power loss problem on Saturday which required an engine change, the subsequent unit then developed an unexpected oil system problem one hour before the race start. The Cosworth track support crew worked methodically and efficiently with the Virgin Racing mechanics to tackle the problem and they did a superb job to reassemble the car in time for Lucas to join the race.
“The problem itself was quite an anomaly so we will now look closely to identify its cause back at base and ensure it does not recur.”