Apr.8 (GMM) The Renault cars did not immediately run in Friday afternoon practice while the team investigated the technical failures of the initial session at Sepang.

Team boss Eric Boullier confirmed at the Malaysian circuit that neither Nick Heidfeld or Vitaly Petrov would return to their R31s until the problem is understood and rectified.

"Best to be on the safe side," the team said on its official Twitter.

Heidfeld had returned to the pits in the first session with a blocked wheel, before Petrov spun into the gravel after a catastrophic failure on his left corner.

It was initially believed the problem was related to brakes, but the later theory was that the fault was in the suspension upright.

Half-way into the second session, it is believed the problem has been found and the cars will return to the track shortly.

Meanwhile, Boullier confirmed that German Heidfeld sat out some pre-weekend events this week with a throat infection.

"It's not serious," he told Bernama news agency. "He wanted to rest and be ready for free practice."

Latest F1 News - Mobile version

26 Feb: New Ferrari not quickest in field - Domenicali 26 Feb: Red Bull still best in 2013 - Tost 26 Feb: 2014 French grand prix 'possible' - Prost 26 Feb: Danica Patrick 'not interested' in F1 switch 26 Feb: Report - Gilles Simon working on F1 engine for Honda 26 Feb: Gutierrez plays down link to Carlos Slim 26 Feb: Caterham exhaust 'legal' insists van der Garde 26 Feb: McLaren replaces Mercedes-bound Lowe 25 Feb: 'Engine maps' trouble for Red Bull, Lotus - report 25 Feb: Mercedes-bound Lowe to miss 2013 opener - report 25 Feb: Mercedes 'in group of teams' behind Red Bull - Lauda 25 Feb: Gutierrez expects Hulkenberg to beat him early in 2013 25 Feb: New Ferrari 'much better' than 2012 - Massa 25 Feb: Teams 'will adapt' to new tyre situation - Gutierrez 25 Feb: Tight rules make today's F1 cars 'the same' - Forghieri 25 Feb: Williams removes controversial exhaust trick 25 Feb: Contract 'conflicts' cause of Marussia test snub - Razia 25 Feb: Lotus to fight Red Bull for title - Gutierrez 25 Feb: Marussia 'ahead of Caterham' - Chilton 25 Feb: Sutil will not stay in F1 as test driver The latest F1 News - Mobile Version