The fuel pump plays a very important role in the car as it is the transport manager of fuel to the engine from the fuel tank. Therefore if it malfunctions, a situation where the engine either gets too much or very little fuel due to too much or very little pressure in the fuel line travelling from the tank to the engine. This will have negative effects on the performance of the car
In a normal working condition fuel in the form of liquid gasoline needs to move from the tank to the engine where it is burned and power is generated to move the car. There are types of fuel pump we want to look at. Let’s start with the mechanical
- The Mechanical Fuel Pump
Before now, all fuel pumps were always mechanical. This meant that they worked through a system that operated on the rotation of the engine itself. A mechanical fuel pump has the dynamics of a diaphragm. It uses the pumping action of that diaphragm design to create low pressure thus moving fuel from the gas tank to the carburettor. This are located on a mount outside the fuel tank itself and are less likely to o malfunction like the electronic fuel pumps. The most common problems associated with the mechanical fuel pumps is if the diaphragm inside the pump brakes. This disturbs the pressure balance of the pump. The second problem of mechanical fuel pump is high heat generated from within the engine and the outside air that changes the fuel to vapor. This poses a challenge to the pump as it was designed to use only liquid.
- The Electronic Fuel Pump
The mechanical fuel pumping system saved its purpose sufficiently during the era of carburetor-based fuel systems until car manufacturers moved past the use of carburetors and invented more advanced fuel injection system. Though the fuel pump is still needed in the advanced injection system, the mechanical pump could not generate the level of fuel pressure need by with fuel injection engines. Thus, a new system which supplies fuel under high pressure (40 to 60 psi) was developed. This is now what is known as an electronic fuel pump.
Nowadays, most cars use this which is located within the fuel tank itself supply fuel to the engine. However, there are far more inherent issues associated with electronic fuel pumps. This system works by spraying mist of fuel inside the engine’s chambers and is operated using a computer control system rather than the former mechanical one. Thus issues with the pump itself as well as the computer used to operate it can arise and lead to vehicle and fuel pump problem.
Let’s now look at the symptoms of faulty fuel pumps
- HARD STARTING: ignored signs that would be listed below could lead to a hard starting. The engine will rev, but it will not fire. This Means that’s there is no fuel reaching the engine upon ignition.
- THE ENGINE STAMMERS DURING HIGH SPEED
This is often the most common prompt sign of fuel pump crisis. This happens when a vehicle is driven at a consistent high speed, while traveling down the road, the car will be ok for about 10 miles and then begin to jerk around, or sputter, for a mile or two before returning to normal.
- LOSE OF ACCELERATING POWER
This seems so like the other symptom. However, rather having the stammering engine experience while driving, vehicles will experience it upon acceleration from a stop. Meaning the vehicle will initially move before making noises and jerking as if it wants to cease, but will continue on its acceleration smoothly.
- ABRUPT LOSS OF POWER UNDER STRESS
This can happen when climbing a hill or when moving a load. If your car begins to lose when discharging this duties power, then your fuel pump is sick
SEE ALSO:HOW TO TEST FUEL PUMP RELAY