Fuel System
About the petrol cap: The petrol cap (also known as the gas cap or fuel cap) sits behind your car’s fuel door. It can be removed so that fuel can be put into your car. The petrol cap does more than a lot of people think. It protects the inside of your fuel...
What is the fuel gauge sender unit? Located inside your car’s fuel tank, the fuel gauge sender unit measures how much fuel is in the tank and sends this information to the fuel gauge on your dash. This allows you to see how much fuel is remaining in your tank....
What is the fuel pump relay? In basically any car with an internal combustion engine, a fuel pump is used to control the flow of fuel to the engine. The fuel pump is most often connected to a small electrical component called the fuel pump relay. The fuel pump relay...
About the fuel pressure regulator: The fuel pressure regulator (or FPR) is an important component in your car’s fuel system. As its name implies, it is responsible for regulating the pressure of your car’s fuel as it flows around the fuel system and...
About high fuel pressure: The fuel pump draws petrol from the fuel tank and sends it to the fuel injectors. Having the correct amount of fuel pump pressure is vital to proper engine operation and performance. This is because your engine requires a certain amount of...
About the diesel fuel pump: In diesel-powered cars, the diesel fuel pump (or diesel injection pump) is responsible for pressurising diesel fuel, then pumping it directly into the diesel fuel injectors, where it enters the cylinders of the diesel engine. Once the...
