go like clockwork

go like clockwork or go off like clockwork  {v. phr.},  {informal}
To run smoothly and regularly like the workings of a clock; go smoothly and without difficulty; go on time or as planned.
The car's motor went like clockwork after Bob fixed it.
The birthday party went off like clockwork and everyone had a good time.
Categories: time {informal} {v. phr.}

'go like clockwork' on video