Mark Webber's spectacular fire in the Korean Grand Prix was caused by a burst oil radiator.
Webber's Red Bull was collected by the spinning Adrian Sutil's Force India at the restart following a safety car period, and stopped at the side of the track. However, oil that leaked from the radiator spilt onto the hot exhausts and burst into flames, causing a major fire.
Red Bull was waiting to asses the damage to the RB9 chassis on Sunday night before determining whether it needs to build up its spare car for Webber for next weekend's race in Japan.
Team principal Christian Horner said: "We carry a spare chassis and all the spare components that go with it. But we need to see what the damage is and whether the car is badly wounded or whether it is repairable."
Webber initially suspected that it was his KERS unit that had burst into flames in the impact.