The engine of any car sometimes becomes capricious. The engine operates unevenly, the speed “floats”, and the thrust decreases sharply. As a rule, the driver understands that something needs to be done. Seek help from a service station. And there the client is worth his weight in gold. If he doesn’t know why the engine is acting up, then the service station workers will make the same appearance. Although, some specialists are able to determine the malfunction by the sound of the engine. But there are few of them. Those who have knowledge have been working for themselves for a long time. But it’s difficult to get to them - they have appointments months in advance.
And at the service station they often offer to leave the car for a day. They say, as soon as they are free, they will begin to look for a problem. They just won’t do it for free. And in order to compensate for the time and earn money, everything begins to be replaced. You can install a new engine, and you don’t need any knowledge or experience. Install new units and attachments, and maybe something will turn out to be a problem. And often everything is simple - spark plugs, ignition coils or the engine is coked. By the way, we fought the last trouble on our own back in Soviet times. The author of the channel “Denis MECHANIC” will conduct an experiment on this topic.
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