Received this model as a X-Mas gift and upon unboxing and fueling up, it worked as in the video. The engine came with spare parts but no explanation of why I might need them. Did not come with instructions and the start up sequence was in question. Luckily you tube videos came to the rescue and I was able to fuel it up and start the engine. Company should either provide instructions or advise you to check out you tube. That was the only major drawback. It is a really cool model, whether on static display or running. Remember that the engine will get HOT ....... be careful & enjoy!