[PART 2] Lewis Hamilton top in Spanish Grand Prix practice with upgraded Mercedes
Alonso was back at the track for the second session, but had to wait for nearly half an hour before he could get out on track while an engine change was completed.
When he did get out, he said the engine still felt down on power and he was slowest of all, 0.5secs slower than his nearest rival, and 1.4secs off the pace of team-mate Stoffel Vandoorne.
During first practice, Honda blamed the failure on an oil leak. Alonso said later: "The oil was coming out of a hole in the engine."
Alonso has failed to finish a race so far this season because of reliability problems, and he added: "It is not my career, my ability, my image. It is their career, their ability their money and their image, so I try to support the team and drive as fast as I can, but the problem is not entirely mine, it is much bigger for them."
Asked why he had left the track, he said he was trying to make up for training time lost because of his commuting back and forth to America to prepare for the Indy 500 after this race.
What they thought
Hamilton said after the session: "First practice was very, very good but in second practice the track changed and shifted quite a lot, so it was slippery and quite a lot slower for everyone - especially with the gusts of wind.
"It was massively challenging, but still fun nonetheless. The team has done an amazing job with the upgrades and the car is working just as we expected. It's been a much better start to the weekend for me than in Sochi, so I'm very happy."
Vettel said: "I'm not happy. Struggling a bit to find the rhythm, with the conditions, probably more myself than the car.
"I didn't get everything together but I can feel the car is quick so that's good. I am not worried. I am just not happy with how the day went. I wasn't always feeling as if I was captain on board.
"Sometimes somebody else was steering my ship but I hope tomorrow whoever that was will disappear."
By Andrew Benson
Chief F1 writer at the Circuit de Barcelona-Catalunya
Sumber : bbc.com