Following Sunday's Valencia MotoGP season finale, an official test session is being held at the circuit from Monday to Wednesday.

The test marks the first appearance for Cal Crutchlow at Ducati, Moto2 world champion Pol Espargaro at Yamaha Tech 3 and former title rival Scott Redding at Honda Gresini.

Redding plus Aspar's Hiroshi Aoyama and Nicky Hayden are riding the new Open class Honda Production Racer, with Hayden - who sat out Monday due to limited machine numbers - getting his first ride on the RCV1000R today.

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The new privateer Forward Racing Yamaha is due to make its public debut on Tuesday in the hands of Aleix Espargaro and Colin Edwards. New world champion Marc Marquez and Repsol Honda team-mate Dani Pedrosa are also back on track after skipping day one.

Valentino Rossi is working with his new crew chief Silvano Galbusera for the first time, while former Aprilia Racing boss Gigi Dall'Igna is present in his new role as general manager of Ducati Corse.

The 2014 rules will see the Factory class bikes lose a further litre of race fuel relative to the Open class machines, raising the difference to four litres. The Open bikes must run the full control ECU system, while the Factory entries can use their own software.

Tuesday's track action began at 10am and concludes at 5pm.

CLICK HERE for more pictures from the test...

1. Marc Marquez ESP Repsol Honda Team (RC213V) 1m 30.679s (Lap 19/28)
2. Dani Pedrosa ESP Repsol Honda Team (RC213V) 1m 31.031s (11/22)
3. Jorge Lorenzo ESP Yamaha Factory Racing (YZR-M1) 1m 31.046s (14/17)
4. Alvaro Bautista ESP Go&Fun Honda Gresini (RC213V) 1m 31.426s (16/31)
5. Stefan Bradl GER LCR Honda MotoGP (RC213V) 1m 31.437s (4/14)
6. Bradley Smith GBR Monster Yamaha Tech 3 (YZR-M1) 31.793s (33/36)
7. Valentino Rossi ITA Yamaha Factory Racing (YZR-M1) 1m 31.843s (10/12)
8. Andrea Iannone ITA Energy T.I. Pramac Racing (GP13) 1m 32.411s (6/12)
9. Andrea Dovizioso ITA Ducati Team (GP13) 1m 32.568s (19/20)
10. Cal Crutchlow GBR Ducati Team (GP13) 1m 32.660s (10/11)
11. Pol Espargaro ESP Monster Yamaha Tech 3 (YZR-M1) 1m 32.853s (18/27)
12. Michele Pirro ITA Ducati Test Team (GP13) 1m 32.944s (8/12)
13. Yonny Hernandez COL Ignite Pramac Racing (GP13) 1m 32.962s (10/11)
14. Nicky Hayden USA Power Electronics Aspar (RCV1000R) 1m 34.041s (16/20)
15. Michael Laverty GBR Paul Bird Motorsport (PBM-ART) 1m 34.406s (12/14)
16. Mike di Meglio FRA Avintia Racing (FTR-Kawasaki) 1m 34.845s (24/26)
17. Randy De Puniet FRA Paul Bird Motorsport (ART) 1m 35.251s (6/8)
18. Scott Redding GBR Go&Fun Honda Gresini (RCV1000R) 1m 38.103s (3/8)

Fastest day one time: Jorge Lorenzo ESP Yamaha 1m 31.257s

Official Valencia MotoGP records: Best lap: Marc Marquez ESP Honda 1m 30.237s (2013) Fastest race lap: Dani Pedrosa ESP Honda1m 31.628s (2013)

Fastest 2013 race laps by manufacturer: Dani Pedrosa ESP Honda 1m 31.628s Jorge Lorenzo ESP Yamaha 1m 31.701s Nicky Hayden USA Ducati 1m 32.764s Aleix Espargaro ESP ART 1m 33.323s Hector Barbera ESP FTR-Kawasaki 1m 33.551s Danilo Petrucci ITA Suter-BMW 1m 34.153s Bryan Staring AUS FTR-Honda 1m 34.815s Damian Cudlin GBR PBM-ART 1m 35.886s