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Signs My Mercedes’ Fuel System Is Clogged

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To prevent the fuel system from getting clogged in your Mercedes-Benz, bring the European beauty to our shop every 30,000 miles for a fuel system service. During this service, we will replace the fuel filter and inspect the system to make sure you don’t have sediment build-up in the fuel hoses or fuel tank. The problems listed below are signs that you’ve got a clogged fuel system.

Difficult Starts

It is going to be difficult to get your Mercedes to fire up if the fuel system is clogged. You need the right amount of fuel combined with air for the spark plugs to ignite. If you drive a Mercedes with a diesel engine, you still need the right amount of fuel and air for the glow plugs to warm. If there is insufficient fuel in the combustion chamber, you will have problems starting the Mercedes.

Misfiring/Stalling

Even if you get the Mercedes to start, it still needs a steady supply of fuel to run properly. If the engine is fuel-starved, it will misfire and stall frequently. A misfiring engine makes it feel as if your Mercedes has the hiccups. The sputtering will get worse when you try to accelerate the European vehicle. Head straight to our shop if your Mercedes’ engine is not performing as it should be.

Rough Idling

Another sign that the Mercedes’ engine is misfiring is rough idling. This is easy to feel because you are seated at a stop. If the clog is a bad one, your engine may stall every time it is running at an idle. Unfortunately, the only way to restore the engine’s performance is to repair the clog in the fuel system. For example, if the fuel filter is clogged, it needs to be replaced with a new one.

Dead Fuel Pump

Unfortunately, a clog in your Mercedes’ fuel system can damage the fuel pump. Imagine water flowing out of a tap. Now, imagine a flow regulator installed on the tap to reduce the water flow. This is what is happening in the fuel system. The clog is reducing the fuel flow. Consequently, the pump will work harder to get the fuel through the clog and into the engine. This will burn out the pump’s motor.

In fact, you may start to hear loud whining noises coming from your Mercedes’ fuel tank. If you do, drive to our shop so we can inspect the fuel system to see if it’s clogged. The sooner we fix the clog the less chance of the fuel pump dying prematurely.

Photo by Mike from Pexels via Canva Pro
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