Testing is cut short for Sebastian Vettel as his Red Bull is hit by engine problems . The four-time world champion says `` teething problems '' are normal . The teams are getting used to new engine technology as part of 2014 rule changes . TL;DR Formula One testing ends on Sunday after a day and night of rain delays the start of practice at Barcelona.
Testing is cut short for Sebastian Vettel as his Red Bull is hit by engine problems . The four-time world champion says `` teething problems '' are normal . The teams are getting used to new engine technology as part of 2014 rule changes . McLaren 's Jenson Button clocks the fastest time on day two of the first winter test in Spain .