Yes, fuses and relays.
One of the most common reasons for fuel injector's failure is carbon buildup due to low-quality fuel. Carbon buildup can make it difficult for the injectors to spray fuel into the cylinders and that results in loss of performance. You can solve this issue by using a high-quality fuel system cleaner.
A pipe called the fuel rail supplies pressurized fuel to all of the injectors.
One of the obvious symptoms of a clogged fuel injector is the lighting up of the "Check Engine" light in your dashboard. The fault codes usually associated with a clogged fuel injector can range from misfire codes to lean codes.
The throttle position sensor (TPS) is usually connected to the throttle plate shaft in the throttle body. The TPS reads the angle of the throttle valve and transmits an electrical signal to the PCM. The PCM uses this real-time signal to help calculate or modify fuel injector pulse width, controlling air/fuel mixture.
Electronic Control Unit (ECU)
It does this by telling the fuel injectors when and how long to fire. The ECU often controls other functions like the fuel pump and ignition timing.
The ECU (engine control unit) uses sensors to work out the right time to fire the injectors and spray fuel into the combustion chamber. When the ECU activates the injector, pressurised fuel is sprayed into the combustion chamber through the nozzles.
Fundamentally, the engine ECU controls the injection of the fuel and, in petrol engines, the timing of the spark to ignite it. It determines the position of the engine's internals using a Crankshaft Position Sensor so that the injectors and ignition system are activated at precisely the correct time.
Poor fuel quality —The main reason your fuel injectors become clogged and unable to do their job is the quality of your fuel. If your fuel has too much excess debris or impurities, those by-products can get into your fuel injectors, making it harder for them to work.
Common causes of injector failure
While many things can cause breakdowns, the most likely cause of premature failure is fuel contamination. Fuel contamination occurs when debris in the fuel gets past the filtration, destroying the sealing surfaces.
Particularly if you are experiencing an issue with more than one gauge on your vehicle, the culprit may be a fuse. If the fuse for the instrument panel has been blown, make sure to replace it. Then go ahead and turn on the car. If the fuel gauge doesn't sort itself out automatically, run the cluster test again.
The fuel pump relay is an electronic component that is found on virtually all vehicles equipped with an internal combustion engine. It is often found in the fuse box located in the engine bay and functions as the primary electronic switch that controls power to the fuel pump.
Along with the electrical connections, the fuel gauge also utilizes a fuse. You can find the fuse in the box located under the steering column or on the driver's side of your vehicle. In some vehicles, there is also a fuse box under the hood.
A crank sensor (CKP) is an electronic device used in an internal combustion engine, both petrol and diesel, to monitor the position or rotational speed of the crankshaft. This information is used by engine management systems to control the fuel injection or the ignition system timing and other engine parameters.
An injection pump is often driven indirectly from the crankshaft by chains, gears or a timing belt that also moves the camshaft. The timing of the pump determines when it will inject fuel into the cylinder as the piston reaches the BTDC point.
Fuel Injector Control Modules (FICM), located on the engine valve cover are subject to intense heat and vibration.
The fuel rail pressure sensor is located on the fuel rail and close to the intake manifold. The easiest way to spot it is to track along the fuel rail and look for the part before the injectors.
Clogged fuel injectors will either push too much gasoline into the engine and make it surge, or it won't be getting enough gasoline into the engine and the engine will sputter and threaten to stall. You may feel your engine surge and sputter as you drive along, which indicates a fuel imbalance.
Typically, a car delivers a subtle rumble when at idle. If you notice that the sound has gone from low to a rough and unpleasant noise, it may be a sign of bad fuel injectors. That occurs when particles build up on the injector nozzles, thus affecting the amount of spray and atomization of fuel.
It is the fuel that is sprayed into the engine from the injectors that is used for combustion. When the engine is denied fuel because an injector is going bad on one side, the matching cylinder will not fire. And the result will be continuous interruption or vibration of the engine when you are driving.
While the engine runs, put the tip of a long metal screwdriver against one of the fuel injectors. Lean in and put your ear on the handle of the screwdriver. A clicking sound indicates a good injector. If you don't hear anything, the injector may need to be cleaned or replaced.