How A 4-Stroke Engine Works And How To Protect Your Engine
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How A 4-Stroke Engine Works And How To Protect Your Engine

Simple steps to repair, maintain, or diagnose your 4-stroke engine.

Most vehicles you see out run on a 4-stroke engine. It is more fuel efficient than 2-stroke engines, while providing adequate power. If you have a car, chances are it has a 4-stroke engine. Most motorcycles also have a 4-stroke engine. 4-strokes also emit less harmful vapors than 2-stroke engines.

But many people don't know how a 4-stroke engine works, or just have a basic idea. If you are interested in learning how a 4-stroke engine works, continue reading and you'll learn how!

Gasoline vapors are injected in small amounts above the piston along with some oxygen. Oxygen, a fuel, and heat are needed in order to make a fire, or in this case, an explosion. Gasoline has more of a tendency to explode rather than burn when ignited. Common problems that arise are the fuel pump goes out or the injector gets clogged. These are problems that should be left to mechanics. They are easy, but only if you have the right tools and know what you are doing. Using a fuel additive can help prevent this

This is where the spark plugs come in. The spark plug ignites the fumes and creates an explosion, which thrusts the piston down. If the spark plug becomes corroded, it can have problems igniting the fumes. This is easily fixable as the spark plug just has to be replaced. With many vehicles, it's better to just let a mechanic do this. It shouldn't take long. Fuel additives can also help here.

Now I purposefully haven't mentioned the piston until now on purpose. At this point, the piston is at the highest it can reach and has the fuel and oxygen under high pressure. The piston then moves down after the explosion and comes back up. When it comes back up, it pushes out the exhaust, or fumes. Some issues that come up here are the piston rings break, the injection or exhaust valves become clogged, or the piston doesn't get the right lubrication. Piston rings don't break often, but it does happen. The exhaust valve is more likely to be the clogged valve, but both can be clogged. Using higher test gases can help or getting a fuel additive will make a difference. And if the piston doesn't get the right lubrication, you have a problem. This can cause you have to have buy an entirely new engine. This can be prevented by regularly checking your oil and making sure you have the right amount.

This goes through your exhaust system and finally out of the tail pipe of your car. But going back to the piston. After the piston pushes out the exhaust, it goes back down and more fuel is injected above the piston. Along with oxygen.

I hope this helps you understand how your car runs better and how you can take care of it to avoid costly repair bills.

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Comments (2)

This explains very well the process of a 4 stroke engine.I learned a lot from your well presented article. Sorry I am out of votes so I will promote instead.

Thanks. Anything is greatly appreciated. I was a little concerned that I jumped around too much because I kept having to go back and add things I had forgotten.