start (someone's) engines

Translations
запустить (чей-то) двигатель
The race car drivers were ready to start their engines.
Гонщики были готовы запустить свои двигатели.
Definitions
To prepare to begin an activity or event, often with energy or excitement; originally derived from auto racing where drivers are told to start their car engines before a race.
Words
engine

noun
двигатель
start

verb
начинать