Blaming McLaren’s problems on the ambitious cooling design of the MCL33, Eric Boullier says a rebuild prior to Australia will “fix a few issues.”

McLaren once again brought out the red flags in pre-season testing when Fernando Alonso’s MCL33 broke down on Friday morning.

It was initially thought to be a leak, however, it was later confirmed as a turbo issue prompting yet another engine change.

“We had a turbo issue in the morning which was related actually to the chassis oil leak we had on Tuesday, a consequence if you want,” Boullier told Crash.net.

“This is now under investigation.”

Despite their troubles, though, the McLaren racing director believes the team will be on top of their problems come Melbourne in two weeks.