Ferrari’s engine chief, Luca Marmorini, has said that the Ferrari drivers will use the engines they raced in Bahrain at this weekend’s Chinese Grand Prix and they have no worries about their reliability. This comes after three Ferrari engined cars retired in Sepang; Fernando Alonso and both Sauber drivers. Marmorini said that analysis of the engine which failed in Fernando Alonso’s car during the Malaysian Grand Prix revealed, as expected, that it was likely to have been caused by Alonso’s gear selection problems and was not related to the last minute changes made in Bahrain, “We have carried out an More…