Nicky Hayden was left extremely frustrated after mechanical gremlins disrupted his qualifying on Saturday, meaning the American will start Sunday's MotoGP race at Misano from a lowly 23rd.

A day after going in the wrong direction with bike set-up, Hayden was content with a 'good step' made overnight with electronics.

After completing his first run in Q1, Hayden pitted for fresh rubber. As he set out for his second, his 'Open' Honda was rumoured to have run out of fuel at the first corner, leaving the 2006 world champion stranded.

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With those around him improving, Hayden slipped to 23rd overall and ended the session six tenths of a second off the top 'Open' machine.

A visibly frustrated Hayden said, "This morning went a good step better than yesterday. I improved by one second the lap time and the feeling we definitely made the bike better, especially the electronics. Even in FP4 it wasn't going so bad. We did a pretty decent lap time on used tyres.

"Then in qualifying in the first run I didn't do such a great lap. On the second run I just went out to start my lap and on the exit of turn one I had a technical problem. I couldn't get back to the pits, the bike actually quit on track. In a 15-minute session that's tough."

Hayden was nonetheless pleased to have made improvements in the third sector of the Misano track, but is still losing substantial amounts of time in acceleration.

"Well we improved in T3 which is where we really wanted to improve today. We improved a lot there. It was a good step. Tomorrow we got a lot of areas in acceleration, to calm the bike down. We have a lot of wheelie and the stability on the front.

"Even on the straight, even in fifth gear. We're losing a lot of time in acceleration. You can see in top speeds I've been pretty much last all week. I think I maybe got in front of one person in qualifying but we'll certainly try and improve that in the race. The group I'm in it's going to be important to try to overtake.

"We did quite a few laps with the soft tyre. The front the medium is working good. There's not a big difference here between soft and hard. I mean the left side is the same. The right side is one step. It's a little help and we think it'll last. It should be ok. 28 laps is quite long. It's supposed to be even warmer here tomorrow so we'll see."