Oceanside Auto Repair

Why does my Volkswagen sound like a diesel?

Engine noises are a frequent issue in engines that can be frightening. However, not all strange noises coming from under your car's hood are bad; some are normal. The engine makes a variety of unpleasant noises, ranging from rattling and knocking to whining and other unusual sounds. They can all give you headaches if you don't pay attention to them. 

Listed below are some reasons why your vehicle sounds like a diesel:

  • Your car might have an engine knock.

This isn't always a cause for alarm. Your spark plugs are knocking because they are not well lubed. The spark plugs would stop knocking and clicking if you used good fuel. There is a simple solution to this problem: replace the injectors.

  • You might have to check your air filter.

The air filter keeps insects, dust, particles, sand, and debris out of the engine and ensures a good air-fuel mixture for performance. When accelerating, a blocked up air filter can cause the engine to rev rough, making it sound like a diesel engine. Check to see if replacing your air filter helps. If not, there are additional things to look into.

  • Your car might have dirty fuel injectors.

A fuel injector is a device that is used to atomize and inject fuel into an internal combustion. At the precise point in the combustion cycle, the injector atomizes the fuel and forces it directly into the chamber of combustion. This is a simple resolve: simply take your vehicle in for maintenance! If you do this and the problem persists, it is possible that something else is wrong with your car's engine or transmission.

  • You might have clogged catalytic converters.

A catalytic converter, in essence, filters out and burns harmful byproducts in exhaust gasses. While the primary purpose of a catalytic converter is to reduce harmful emissions, it also enhances the fuel efficiency of your vehicle. Catalytic converter clogging is frequently caused by poor servicing or poor driving habits. If this is the case, you should probably take your car in for service anyway so that they can clean out all the gunk-clogged parts.

Both gasoline and diesel engines are internal combustion engines designed to convert fuel electrical energy to mechanical energy. The primary distinction between the two is in the compaction. Diesel engines inject fuel into the already compressed air inside the cylinder. Because their technicians work under greater strain, these engines are much noisier than gasoline engines. The noise is caused by numerous small parts inside, such as metal caps, small valves, and oil pipes. Diesel engine problems usually occur because people ignore the bad noises that indicate a problem.

For over 12 years, Oceanside Motorsports has been an Oceanside staple helping you get back on the road faster than the dealer can. Some of our services include oil change, steering and suspension, transmission repair and tune-ups. We have continuously trained technicians and offer lifetime warranty on most repairs. With our Time Saver Service, we can get your car and deliver it to your doorstep once fixed. We can even help arrange towing if needed. You can also have our free loaner car while your car is serviced.


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343 Airport Rd. Oceanside, CA 92058 (760) 721-5500