Removing the piston cooling nozzles before reboring the block. K4M engine (Renault 1.6-liter)
An Opel piston pin turned out to be a good option for making a primitive Renault oil injector puller.
If an injector used to cost 300 rubles, we'd just pull it out, buy new ones, and off we go.
Today, an injector costs 1,000 rubles.