Fuel Pressure Regulator: 3 Signs it is Malfunctioning

A car is constructed of a wide range of different components. Each of these elements needs to perform various actions in tandem for the vehicle to function properly. One of these components is the fuel pressure regulator. The fuel pressure regulator ensures the fuel is kept at the correct pressure as it moves around the vehicle. Below is a guide to 3 signs that your fuel pressure regulator is malfunctioning.

Spark plugs covered in soot

When carrying out periodic inspections of your vehicle, you should remove the spark plugs and examine them. If you notice that the ends of the spark plug have become blackened by a sooty deposit, this is a sign that the fuel pressure regulator may be malfunctioning. When the pressure is too high or low with your car's fuel system, it can lead to incomplete burning of fuel which results in the sooty deposit. If you notice any build up of material on your spark plugs, you should have your vehicle inspected by a qualified auto mechanic. 

Reduction in engine performance

Another sign of a damaged fuel regulator is a decrease in the performance of your engine. You may notice that when your engine is idling, there is excessive vibration or a rough sound. If you do not address these problems, they could develop into something more serious. For example, you may notice that you need to turn your key in the ignition several times before the car will start. Eventually, the engine will suffer from lack of power and eventual breakdown. If you notice any of these signs, you need to take your car to the local auto repair garage.

Black exhaust emissions

Black smoke coming from your exhaust is a classic sign that there is a problem with your fuel pressure regulator. When your car is performing as it should, the exhaust smoke should be light grey or white in colour. Black emissions are caused when a faulty pressure regulator results in the incomplete combustion of the fuel in your car's engine, leading to particles and deposits forming in the exhaust gases. If you notice that the exhaust smoke is black, you should book an appointment with an auto mechanic and have your car inspected.

If you have any concerns about your vehicle, you should contact a professional auto service centre today. A mechanic will be able to assess your vehicle before carrying out any necessary repairs.