The fuel pump is an integral element of any car or truck. Given the responsibility of literally pumping a vehicle's fuel from its tank to the engine, a malfunctioning fuel pump will usually lead to total disaster. Car owners should be aware of common symptoms of a malfunctioning pump so they can take a preventative measure before the worst happens.

Dirt in the fuel tank can be a major cause (Just like shown in the pics below). Over time, dust from badly filtered fuel at the pumps could accumulate and clog up the primary filter restricting free flow of fuel.

This guide is designed to explain the five most common signs of a failing fuel pump. That process begins with an explanation of the role and function of the fuel pump, which will help vehicle owners to understand the reasons behind a malfunction. I will detail common symptoms, everything from engine misfires to cars that won't start. By the end of this guide, car owners will understand what symptoms to look for in their own vehicles.

1. The Engine Sputters at High Speed

The most common early sign of a problem comes when driving a vehicle at a consistently high speed. While traveling down the road, the car will run well for about 10 miles and then begin to jerk or sputter before returning to normal.

Many members of the driving community at times will mistakenly diagnose a sputtering vehicle as one with "dirty" gas, an almost empty tank or some other fuel-related issue. While that can be the case, it is not uncommon for a fatigued fuel pump to create this same symptom as it struggles to supply a constant stream of fuel to the engine at the proper pressure. The loss of pressure causes the engine to sputter.

2. Vehicle Loses Power While Accelerating

With a similar symptom to the previous, vehicles will jerk during acceleration from a stop. The car may produce a stalling sound and then accelerate smoothly.

What This Means

Once you take your foot off the brake and hit the gas pedal, a working pump increases the flow of gas or diesel to fuel acceleration. Because a malfunction starves your car of that increased flow, it doesn't have the power it needs to respond to commands. Once pressure is restored, the engine is able to run smoothly, and the car takes off.

3. Sudden Loss of Power When the Vehicle is Under Stress

A car or truck is put under stress when the work needed to complete an ordinary task, such as forward movement, is somehow hindered by external forces. Generally, this occurs when climbing a hill or when hauling a load. If, when completing these tasks, the vehicle loses power, cannot accelerate, or begins to sputter, the fuel pump is a possible culprit.

What This Means

Generally, even an aging pump can maintain a steady stream of fuel and pressure when operating under normal conditions. These devices create resistance or fail when under stress, leading to power loss.

4. Surging

If your vehicle doesn't lose power while driving, you may find it surges - accelerating suddenly with no drive input.

What This Means

Some may mistakenly blame this on the fuel filter, reasoning that it is not properly trapping dirt and rust. More likely, this surge is created because, as a result of age and normal wear and tear, the fuel pump has irregular resistance within its motor. This creates a situation where the pump cannot draw enough electricity to maintain the pressure needed for steady speeds and may "surge" with a sudden ratcheting up in pressure.

5. The Engine Will Not Start

The final symptom of a malfunctioning pump is also the most severe. Drivers who ignore the signs eventually will end up here, with a car or truck that won't start.

What This Means

When a pump has malfunctioned to the point that the car will no longer start, this means that there is no fuel reaching the engine upon ignition. For that reason, drivers will hear the sparks try to ignite, but there will be no fuel to burn. To diagnose such a malfunction, check for a blown fuse and pressure in the fuel line, as the gauge should read 0.

Conclusion

An essential element of any internal combustion system, understanding what a fuel pump does and the different ways that it can fail can help drivers avoid bad situations with a car or truck.

The five most common symptoms of a malfunctioning fuel pump include sputtering at high speeds, loss of power during acceleration, loss of power to the vehicle while under stress, surging, and an engine that will not start. Understanding these symptoms and correctly identifying them early is the only way that drivers can avoid getting to the point where their vehicle will not start, stranding them and costing them a lot of money in repairs. Replacing a faulty fuel pump is not as simple as an oil change. People interested in changing a fuel pump without a mechanic should exercise caution, working in an environment where the temperature will not ignite gas fumes and using a premium pump assembly.

Please note:

Also check the fuel filter and replace if necessary. Also check the injector nozzles if clogged and clean up if necessary.

Nice post!

It is more of symptons of fuel pressure rather than fuel pump .

Very good one. This is exactly what has been happening to my car unfortunately it has reached the finally stage as it doesn't start.

flootintin:
Can fuel pump cause a car to go off when it suddenly bumps into a pothole but continues to run smoothly after restart?

please i will like an answer to this question because i am currently experiencing a problem of that nature.

once i slow down by applying the brakes, the vehicle may just stop and i will need to restart it.

nice one op

2016 and the post just dey make front-page 2018

2 years Later !!!! There is hope




STUDENT: Sir can i have a question?
Teacher: Yes!
Student: how do u put an elephant inside a fridge?
Teacher: i dont know
Student: its easy you just open the fridge and put it in. I have another question!
Teacher: okay ask!
Student: how to put a donkey inside the fridge??
Teacher: It's easy you just open the fridge and put it in.
Student: No sir! You just open the fridge take out the elephant and put it in.
Teacher: ohhh.. Ok!
Student: let me ask another one, If all the animals went to the lion's birthday party, and one animal went missing which one would it be?
Teacher: the Lion ofcourse! Bcoz it wud eat all the animals.
Student: No sir, it is the donkey bcoz its still inside the fridge.
Teacher: are you kidding me?!
Student: no sir! One last question.
Teacher: ok!!
Student: If there's a river full of crocodiles and you wanted to cross, how would you?
Teacher: There's no way, i would need a boat to cross.
Student: No sir, you just swim and cross it bcoz all the animals went to the lion's birthday party!

Are there any long term effects on the engine if you continue to drive with a bad fuel pump?

ok

These should be the posts to see on FP, not issues that contradict the norm like Bobby Risky

Simple!! Once issue of fuel pump starts, just throw that car in a sewage dump and buy new one.

Thank me for this information later

sexdoll:


please i will like an answer to this question because i am currently experiencing a problem of that nature.

once i slow down by applying the brakes, the vehicle may just stop and i will need to restart it.

brake and quench which kind of car is that

flootintin:
Can fuel pump cause a car to go off when it suddenly bumps into a pothole but continues to run smoothly after restart?

This could be a fore-runner for an electrical defect. It is possible that a fuse or a wiring is getting out of position.

Check for loose wiring and poor connector contacts first.

Nice post... But me no get motor oooo

This your question na ojoro. are the animal in the same community like that of Animal Farm?

hardwerk:
2 years Later !!!! There is hope




STUDENT: Sir can i have a question?
Teacher: Yes!
Student: how do u put an elephant inside a fridge?
Teacher: i dont know
Student: its easy you just open the fridge and put it in. I have another question!
Teacher: okay ask!
Student: how to put a donkey inside the fridge??
Teacher: It's easy you just open the fridge and put it in.
Student: No sir! You just open the fridge take out the elephant and put it in.
Teacher: ohhh.. Ok!
Student: let me ask another one, If all the animals went to the lion's birthday party, and one animal went missing which one would it be?
Teacher: the Lion ofcourse! Bcoz it wud eat all the animals.
Student: No sir, it is the donkey bcoz its still inside the fridge.
Teacher: are you kidding me?!
Student: no sir! One last question.
Teacher: ok!!
Student: If there's a river full of crocodiles and you wanted to cross, how would you?
Teacher: There's no way, i would need a boat to cross.
Student: No sir, you just swim and cross it bcoz all the animals went to the lion's birthday party!

Does injection cleaners help in situations like this, May not be a final solution but will it help?

youngibeh:
This your question na ojoro. are the animal in the same community like that of Animal Farm?

Yes na

Fuel pump

NA LIE JOR

cardoctor:
The fuel pump is an integral element of any car or truck. Given the responsibility of literally pumping a vehicle's fuel from its tank to the engine, a malfunctioning fuel pump will usually lead to total disaster. Car owners should be aware of common symptoms of a malfunctioning pump so they can take a preventative measure before the worst happens.

Dirt in the fuel tank can be a major cause (Just like shown in the pics below). Over time, dust from badly filtered fuel at the pumps could accumulate and clog up the primary filter restricting free flow of fuel.

This guide is designed to explain the five most common signs of a failing fuel pump. That process begins with an explanation of the role and function of the fuel pump, which will help vehicle owners to understand the reasons behind a malfunction. I will detail common symptoms, everything from engine misfires to cars that won't start. By the end of this guide, car owners will understand what symptoms to look for in their own vehicles.

1. The Engine Sputters at High Speed

The most common early sign of a problem comes when driving a vehicle at a consistently high speed. While traveling down the road, the car will run well for about 10 miles and then begin to jerk or sputter before returning to normal.

Many members of the driving community at times will mistakenly diagnose a sputtering vehicle as one with "dirty" gas, an almost empty tank or some other fuel-related issue. While that can be the case, it is not uncommon for a fatigued fuel pump to create this same symptom as it struggles to supply a constant stream of fuel to the engine at the proper pressure. The loss of pressure causes the engine to sputter.

2. Vehicle Loses Power While Accelerating

With a similar symptom to the previous, vehicles will jerk during acceleration from a stop. The car may produce a stalling sound and then accelerate smoothly.

What This Means

Once you take your foot off the brake and hit the gas pedal, a working pump increases the flow of gas or diesel to fuel acceleration. Because a malfunction starves your car of that increased flow, it doesn't have the power it needs to respond to commands. Once pressure is restored, the engine is able to run smoothly, and the car takes off.

3. Sudden Loss of Power When the Vehicle is Under Stress

A car or truck is put under stress when the work needed to complete an ordinary task, such as forward movement, is somehow hindered by external forces. Generally, this occurs when climbing a hill or when hauling a load. If, when completing these tasks, the vehicle loses power, cannot accelerate, or begins to sputter, the fuel pump is a possible culprit.

What This Means

Generally, even an aging pump can maintain a steady stream of fuel and pressure when operating under normal conditions. These devices create resistance or fail when under stress, leading to power loss.

4. Surging

If your vehicle doesn't lose power while driving, you may find it surges - accelerating suddenly with no drive input.

What This Means

Some may mistakenly blame this on the fuel filter, reasoning that it is not properly trapping dirt and rust. More likely, this surge is created because, as a result of age and normal wear and tear, the fuel pump has irregular resistance within its motor. This creates a situation where the pump cannot draw enough electricity to maintain the pressure needed for steady speeds and may "surge" with a sudden ratcheting up in pressure.

5. The Engine Will Not Start

The final symptom of a malfunctioning pump is also the most severe. Drivers who ignore the signs eventually will end up here, with a car or truck that won't start.

What This Means

When a pump has malfunctioned to the point that the car will no longer start, this means that there is no fuel reaching the engine upon ignition. For that reason, drivers will hear the sparks try to ignite, but there will be no fuel to burn. To diagnose such a malfunction, check for a blown fuse and pressure in the fuel line, as the gauge should read 0.

Conclusion

An essential element of any internal combustion system, understanding what a fuel pump does and the different ways that it can fail can help drivers avoid bad situations with a car or truck.

The five most common symptoms of a malfunctioning fuel pump include sputtering at high speeds, loss of power during acceleration, loss of power to the vehicle while under stress, surging, and an engine that will not start. Understanding these symptoms and correctly identifying them early is the only way that drivers can avoid getting to the point where their vehicle will not start, stranding them and costing them a lot of money in repairs. Replacing a faulty fuel pump is not as simple as an oil change. People interested in changing a fuel pump without a mechanic should exercise caution, working in an environment where the temperature will not ignite gas fumes and using a premium pump assembly.

Please note:

Also check the fuel filter and replace if necessary. Also check the injector nozzles if clogged and clean up if necessary.

please how can one know a good fuel pump or do you have any particular one that is top notch?.. Cz I need it badly..I keep buying fuel pump every 2 months...is annoying

cardoctor:


Please note:

Also check the fuel filter and replace if necessary. Also check the injector nozzles if clogged and clean up if necessary.

Pls I have one 05 toyota corolla that has been giving me issue on this matter. It suddenly doesn't start in one attempt especially in the morning. It takes about three attempts for it to start & one it does, it jerks for about 2 secs & firs high before it stabilizes. I have changed d fuel pum twice, changed d fuel filter, service d nuzzle & injector....yet no show. I dont know what else to do; pls I need some help

sexdoll:


please i will like an answer to this question because i am currently experiencing a problem of that nature.

once i slow down by applying the brakes, the vehicle may just stop and i will need to restart it.

.

I experienced this problem but the solution is just for u to check the rpm, if the rpm is low u will need to raise it a bit.

elasticlala:


Pls I have one 05 toyota corolla that has been giving me issue on this matter. It suddenly doesn't start in one attempt especially in the morning. It takes about three attempts for it to start & one it does, it jerks for about 2 secs & firs high before it stabilizes. I have changed d fuel pum twice, changed d fuel filter, service d nuzzle & injector....yet no show. I dont know what else to do; pls I need some help

Bros check ur battery, it might have been short circuited

femmoy:



Bros check ur battery, it might have been short circuited

Ok. Thanks. But how do I know if it is short circuited? d battery doesn't run down.

afamaustin:
brake and quench which kind of car is that

golf 3 automatic transmission.

femmoy:

I experienced this problem but the solution is just for u to check the rpm, if the rpm is low u will need to raise it a bit.

Sorry sir, excuse me for asking but what exactly is rpm?

cardoctor:
The fuel pump is an integral element of any car or truck. Given the responsibility of literally pumping a vehicle's fuel from its tank to the engine, a malfunctioning fuel pump will usually lead to total disaster. Car owners should be aware of common symptoms of a malfunctioning pump so they can take a preventative measure before the worst happens.

Dirt in the fuel tank can be a major cause (Just like shown in the pics below). Over time, dust from badly filtered fuel at the pumps could accumulate and clog up the primary filter restricting free flow of fuel.

This guide is designed to explain the five most common signs of a failing fuel pump. That process begins with an explanation of the role and function of the fuel pump, which will help vehicle owners to understand the reasons behind a malfunction. I will detail common symptoms, everything from engine misfires to cars that won't start. By the end of this guide, car owners will understand what symptoms to look for in their own vehicles.

1. The Engine Sputters at High Speed

The most common early sign of a problem comes when driving a vehicle at a consistently high speed. While traveling down the road, the car will run well for about 10 miles and then begin to jerk or sputter before returning to normal.

Many members of the driving community at times will mistakenly diagnose a sputtering vehicle as one with "dirty" gas, an almost empty tank or some other fuel-related issue. While that can be the case, it is not uncommon for a fatigued fuel pump to create this same symptom as it struggles to supply a constant stream of fuel to the engine at the proper pressure. The loss of pressure causes the engine to sputter.

2. Vehicle Loses Power While Accelerating

With a similar symptom to the previous, vehicles will jerk during acceleration from a stop. The car may produce a stalling sound and then accelerate smoothly.

What This Means

Once you take your foot off the brake and hit the gas pedal, a working pump increases the flow of gas or diesel to fuel acceleration. Because a malfunction starves your car of that increased flow, it doesn't have the power it needs to respond to commands. Once pressure is restored, the engine is able to run smoothly, and the car takes off.

3. Sudden Loss of Power When the Vehicle is Under Stress

A car or truck is put under stress when the work needed to complete an ordinary task, such as forward movement, is somehow hindered by external forces. Generally, this occurs when climbing a hill or when hauling a load. If, when completing these tasks, the vehicle loses power, cannot accelerate, or begins to sputter, the fuel pump is a possible culprit.

What This Means

Generally, even an aging pump can maintain a steady stream of fuel and pressure when operating under normal conditions. These devices create resistance or fail when under stress, leading to power loss.

4. Surging

If your vehicle doesn't lose power while driving, you may find it surges - accelerating suddenly with no drive input.

What This Means

Some may mistakenly blame this on the fuel filter, reasoning that it is not properly trapping dirt and rust. More likely, this surge is created because, as a result of age and normal wear and tear, the fuel pump has irregular resistance within its motor. This creates a situation where the pump cannot draw enough electricity to maintain the pressure needed for steady speeds and may "surge" with a sudden ratcheting up in pressure.

5. The Engine Will Not Start

The final symptom of a malfunctioning pump is also the most severe. Drivers who ignore the signs eventually will end up here, with a car or truck that won't start.

What This Means

When a pump has malfunctioned to the point that the car will no longer start, this means that there is no fuel reaching the engine upon ignition. For that reason, drivers will hear the sparks try to ignite, but there will be no fuel to burn. To diagnose such a malfunction, check for a blown fuse and pressure in the fuel line, as the gauge should read 0.

Conclusion

An essential element of any internal combustion system, understanding what a fuel pump does and the different ways that it can fail can help drivers avoid bad situations with a car or truck.

The five most common symptoms of a malfunctioning fuel pump include sputtering at high speeds, loss of power during acceleration, loss of power to the vehicle while under stress, surging, and an engine that will not start. Understanding these symptoms and correctly identifying them early is the only way that drivers can avoid getting to the point where their vehicle will not start, stranding them and costing them a lot of money in repairs. Replacing a faulty fuel pump is not as simple as an oil change. People interested in changing a fuel pump without a mechanic should exercise caution, working in an environment where the temperature will not ignite gas fumes and using a premium pump assembly.

Please note:

Also check the fuel filter and replace if necessary. Also check the injector nozzles if clogged and clean up if necessary.

Hello Op,

I presently drive one with almost all symptoms..


My question: Does a faulty fuel pump increase fuel consumption?

elasticlala:


Pls I have one 05 toyota corolla that has been giving me issue on this matter. It suddenly doesn't start in one attempt especially in the morning. It takes about three attempts for it to start & one it does, it jerks for about 2 secs & firs high before it stabilizes. I have changed d fuel pum twice, changed d fuel filter, service d nuzzle & injector....yet no show. I dont know what else to do; pls I need some help

Where do you buy your fuel from? Do you constantly buy fuel from the same source?

I ask because I had this same issue of vibrating & self-firing on every cold start in the morning. Mechanic was certain it was the injector. Bought injector cleaner & used it to no avail.

But, then, I remembered that I started experiencing the issue after my last fuel purchase from a "trusted" filling station. Seeing twas full tank I bought, I stopped bothering myself & managed the car til I exhausted the fuel totally.

Afterwards, I went to that same filling station & bought fuel again, this time small quantity first. Voila, the issue stopped. Twas the previous fuel all along. A colleague who bought fuel from them, same period, experienced the same issue.

sexdoll:


golf 3 automatic transmission.



Sorry sir, excuse me for asking but what exactly is rpm?

Revolutions per minute.
What our mechanics would call "fire," for eg the car "fire" too high/low, abeg reduce/increase am small.