HIT ON ALL CYLINDERS

{v. phr.} 1. To run smoothly or at full power without any missing or skipping. - Said of a motor. * /The mechanic tuned the car engine until it was hitting on all cylinders./ 2. {informal} To think or work well; to use all your ability. * /The football team was hitting on all cylinders and scored a big victory./ * /Bob began to write his examination, and found himself hitting on all cylinders./