Despite leading both days of the Valencia post-race MotoGP te☂st, Maverick Vinales is reserving judgement on which of the two new Yamaha engines🌸 he prefers until trying them again at Jerez next week.

Vinales had set the pace with a 1m 31.416s on da🦹y one, remaining on top after lowering his be🤡st to a 1m 30.757s despite a fall on day two.

But the top priority this week for Vinales and team-mate Valentino Rossi was to try ♛two new engine specifications.

"Not😼hing else. Just the engines. The most important thing!" smiled Vinales, riding with his new #🎃12.

Yamaha is ဣseeking a sm🉐oother engine to cure its acceleration and rear tyre life issues.

On Tuesday the initial 2019 version offered a clear improvement over the 2018 design, but then when the second 2019☂ spec was rolled out on Wednesday it was hard to pick a favourite between them.

"It's very difficult," said Vinales. "I could not be let's say 100% sure which engine is better, so I think it's better to try in Jerez and try to be more precise. Here was diffic๊ult because the track changed quite a lot.

"I think there are very small differenc🐬es, but it makes a lot over one lap. So we need to be sure which engine we prefer.

"Most of the time I rode with the same one, where I felt better on engine brake, because I want to concentrate a lot on entry to the corner.꧂ Because I think when we lose grip that is where we lose [time]. So it is important and today I felt strong going into the corners.

"But anyway still there is a l൲ot to do on the top power to make it smoother, because still it's aggressive and I lose a lot of traction. So in Jere⭕z it will be very important to choose the engine.

"As I said, we're going to try them more, we're going to be more convinced about the engine decision, but th💟e direction we are following is the correct one."

Vinales had ♎mixed feelings about setting the fastest time at the test, having delivered a quicker 1m 30.189s to lead the same test a year ago, but pointed out he had done no real dry set-up work after the wet grand prix weekend.

"Not so bad. It depends how you compa💎re because last year we were faster, but I think the track conditions today were not great and it was very slippery. Especially the front," Vinales said.

"So the bike 𒁃is working when the track is slippery, which is a really good point. Also we didn’t try anything on the set-up and I felt there we can make a big step. So I'm happy that only with t🐟he engine we improved some tenths.

"We'll keep working.✤ I think to get a smoother bike will be very important, especially when there is no grip in a race. But there are some upgrades that still need to arrive that help…"

Vinal𒊎es finished the test 0.133s clear of Ducati's Andrea Dovizioso with Honda's world champ🍃ion Marc Marquez completing a top three covered by 0.154s.

Rossi was ninth fastest (+0.614s).