The second day of the special CRT test at Sepang, laid on to allow the teams using the brand new Magneti Marelli spec-ECU, was as beset by problems as the first day. If technical problems and a lack of parts had been the bane of day 1, it was the weather which dogged the teams, though technical problems persisted.
Heavy rain in the morning meant that only Danilo Petrucci went to put in a few laps before running into an electrical issue with a coil left the engine running on two cylinders. The rain stopped in the afternoon, but the track remained wet, leaving the riders present to do only a few laps.
Petrucci ended the day fastest – though his best time of 2’23.546 is fairly meaningless at a track where the race lap record is 2’02, and the pole record 2’00 – but frustrated at having not been able to get much work done. The electrical problems left him stranded in the pits in the morning, while teammate Lukas Pesek took the only Magneti Marelli ECU the team currently has at their disposal in the afternoon.