The engine video system with a fiber optical image guide is an optical equipment for the investigation of all kinds of periodic event sin production engines, such as injection or combustion process in reciprocating engines, etc. It is a reliable and easy-to-handle tool for research and development work avoiding significant alterations to the engine. This is possible by obtaining optical access to most parts of the engine via a fiber optical image guide. On-line observation of various phenomena is realized by connecting a miniature video CCD camera to the fiber optical image guide. System features are suitable for diesel and gasoline engine, on-line observation and recording, system resolution better than 10pl/mm. This system can be used to observe non- luminous phenomena such as fuel injection of cyclic movement of mechanical parts by the use of a high power xenon lamp that has the power 350W guided by an optical fiber bundle to the observed target.