High-Pressure Fuel Pumps: 4 Signs They Need Replacing

25 March 2022
 Categories: Business, Blog


Automobiles need high-pressure pumps to direct fuel to the engine's fuel system and regulate fuel injection. That makes these devices essential in all car engines. By facilitating effective injection of pressurized fuel into vehicles' combustion chamber cylinders, these pumps improve fuel economy, cut emissions, and boost the engine's performance. Unfortunately, high-pressure pumps are predisposed to numerous issues that make replacements necessary like all other machines. Below are some signs that tell car owners they need to replace high-pressure fuel pumps.

1.       Sputtering engine

A car engine may sputter and, in extreme cases, stall if its fuel pump operates erratically. Experts design functional high-pressure pumps to direct fuel through the internal combustion engine non-stop when the vehicle is running. However, if specific issues make the fuel pump unable to pump a constant fuel stream at high speeds, that will not happen, leading to sputtering or surging engine problems. Car owners should seek expert help when they notice pronounced engine stutters and jolts because they may undermine control and cause accidents or collisions.

2.       Strange noises

If your engine produces high-pitched noises or you hear constant whining sounds from the fuel tank, you've enough reason to suspect the high-pressure fuel injection pump. That is so because a fuel pump with worn-out components will screech, whine, or emit other strange sounds when operating. On the other hand, a failing high-pressure fuel pump may also lead to whining noises in the fuel tank. But low fuel may cause the same issue. To be safer, let an expert examine your automobile's high-pressure pump and fuel tank and recommend the best solution.

3.       Engine start failure

One of the leading causes of starting problems in car engines is a damaged fuel pump. If this component can't inject enough fuel into the engine from the tank, starting issues become inevitable. Moreover, the automobile will have trouble running since a faulty high-pressure fuel pump can't channel enough fuel through the engine. Although there are several ways to start a car when the injection pump refuses to operate, replacing the faulty component is the best solution. Otherwise, using the same damaged part can lead to fuel starvation and extensive engine damage.

4.       Reduced fuel efficiency  

A high-pressure fuel pump pushes the right amount of fuel through a car's engine, but a damaged component does the opposite. For instance, a broken pump may inject too much gas into your vehicle's internal combustion engine, facilitating increased gas consumption. Therefore, if your automobile's fuel economy is deteriorating alarmingly, take it to a repair shop and let the technicians check its high-pressure fuel pump. If it's in deplorable condition, replacing it may be necessary to boost fuel efficiency.