Shanghai, April 13 : Red Bull's Formula 1 driver Mark Webber will start Sunday's Chinese Grand Prix at the Shanghai International Circuit from the back of the grid after the stewards found that he did not have enough fuel in his car for the mandatory one-litre post-qualifying sample.

The Australian had initially qualified in 14th after being told over the radio by his team to park his car midway through Q2. Red Bull later confirmed that the stoppage was caused by a fuel bowser problem that led to 3 kg of fuel not being delivered to Webber's RB9.

"The fuel bowser has been immediately quarantined for further investigation," Red Bull team principal Christian Horner was quoted as saying by Formula1. com.

A similar problem forced Webber's teammate and triple World Champion Sebastian Vettel to start the 2012 Abu Dhabi Grand Prix last.

Under the regulations, any car that stops on the track during qualifying must have enough fuel for the mandatory one-litre minimum sample plus an additional amount proportional to the amount of fuel that would have been used in returning to the pits.(IANS)