Testing began at 10am and concludes at 6pm.

Honda riders Casey Stoner, Dani Pedrosa, Alvaro Bautista and Stefan Bradl are returning to action after missing day two while HRC carried out engine checks following a problem on Pedrosa's bike.

Karel Abraham (Cardion AB Ducati) withdrew from the test on day one due to pain from shoulder and back injuries sustained at Jerez last week.

The first two days of testing were both interrupted by rain storms.

The third and final official pre-season test will be held at Jerez from March 23-25, when the full 21-rider grid - twelve manufacturer bikes plus nine CRTs - will be on track together for the first time.

CLICK HERE for pictures from the second Sepang test...

1. Casey Stoner AUS Repsol Honda 2m 0.473s (Lap 26/27)
2. Jorge Lorenzo ESP Yamaha Factory Racing 2m 0.877s (23/25)
3. Dani Pedrosa ESP Repsol Honda 2m 1.115s (23/23)
4. Andrea Dovizioso ITA Monster Yamaha Tech 3 2m 1.315s (29/32)
5. Ben Spies USA Yamaha Factory Racing 2m 1.432s (17/28)
6. Cal Crutchlow GBR Monster Yamaha Tech 3 2m 1.454s (27/32)
7. Valentino Rossi ITA Ducati Team 2m 1.550s (15/32)
8. Nicky Hayden USA Ducati Team 2m 1.609s (7/31)
9. Hector Barbera ESP Pramac Racing 2m 1.623s (9/35)
10. Alvaro Bautista ESP San Carlo Honda Gresini 2m 1.640s (31/31)
11. Stefan Bradl GER LCR Honda 2m 1.900s (16/32)
12. Franco Battaini ITA Ducati Test Rider 2m 3.490s (38/39)
13. Colin Edwards USA Forward Racing (Suter-BMW CRT) 2m 5.152s (20/27)
14. Yonny Hern?ndez COL Avintia (FTR-Kawasaki CRT) 2m 6.868s (26/27)
15. Ivan Silva ESP Avintia (FTR-Kawasaki CRT) 2m 7.228s (20/28)

Fastest day two time: Ben Spies USA Yamaha 2m 1.285s

Fastest day one time: Casey Stoner AUS Honda 2m 1.761s

Fastest Sepang I test times (Feb 2): By manufacturer: Casey Stoner AUS Honda 1m 59.607s Jorge Lorenzo ESP Yamaha 2m 0.198s Valentino Rossi ITA Ducati 2m 0.824s Colin Edwards USA Suter 2m 4.722s Ivan Silva ESP FTR 2m 8.225s

Official Sepang MotoGP lap records: Pole position: Valentino Rossi ITA Yamaha 2m 0.518s (2009) Fastest race lap: Casey Stoner AUS Ducati 2m 2.108s (2007)