Brazilian Rubens Barrichello joined team mate Jenson Button at the back of the Turkish Grand Prix starting grid on Sunday after Honda also changed the engine of his car.
Under Formula One rules, engines must last two successive races unless a driver fails to finish. Any unscheduled change after the end of Friday free practice incurs a 10 place penaltyon the starting grid.
Honda said on Saturday Button would have his engine switched out after a problem in qualifying. The Briton, scorer of Honda's only point in 11 races this season, had qualified 15th with Barrichello 14th.
Under Formula One rules, engines must last two successive races unless a driver fails to finish. Any unscheduled change after the end of Friday free practice incurs a 10 place penaltyon the starting grid.
Honda said on Saturday Button would have his engine switched out after a problem in qualifying. The Briton, scorer of Honda's only point in 11 races this season, had qualified 15th with Barrichello 14th.