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Lalasticlala, Seun, Marpol

ndiko:
[s]
3. Misfires and a decrease in power, acceleration, and fuel efficiency

Another symptom of a problem with the fuel pump is engine performance issues. As the fuel pump is what supplies the vehicle with the fuel required for combustion to occur, any issues with it can affect the engine’s fuel supply and cause issues. A faulty pump with low pressure will disturb the engine’s air-fuel ratio, which can cause all sorts of performance problems. Aside from hard starting, the vehicle may experience misfires, a loss in power and acceleration, a decrease in fuel efficiency, and even engine stalling.
[/s]

Bad fuel (PMO & AGO) not properly refined or not suitable for the vehicle triggers the same effect. One may think it's fuel pump. Look into this area too. FYI.

ndiko:
[s]
3. Misfires and a decrease in power, acceleration, and fuel efficiency

Another symptom of a problem with the fuel pump is engine performance issues. As the fuel pump is what supplies the vehicle with the fuel required for combustion to occur, any issues with it can affect the engine’s fuel supply and cause issues. A faulty pump with low pressure will disturb the engine’s air-fuel ratio, which can cause all sorts of performance problems. Aside from hard starting, the vehicle may experience misfires, a loss in power and acceleration, a decrease in fuel efficiency, and even engine stalling.
[/s]

Bad fuel (PMO & AGO) not properly refined or not suitable for the vehicle triggers the same effect. One may think it's fuel pump. Look into this area too. FYI.

ndiko:
[s]
3. Misfires and a decrease in power, acceleration, and fuel efficiency

Another symptom of a problem with the fuel pump is engine performance issues. As the fuel pump is what supplies the vehicle with the fuel required for combustion to occur, any issues with it can affect the engine’s fuel supply and cause issues. A faulty pump with low pressure will disturb the engine’s air-fuel ratio, which can cause all sorts of performance problems. Aside from hard starting, the vehicle may experience misfires, a loss in power and acceleration, a decrease in fuel efficiency, and even engine stalling.
[/s]

Bad fuel (PMO & AGO) not properly refined or not suitable for the vehicle triggers the same effect. One may think it's fuel pump. Look into this area too. FYI.

Ricmayak1:

Why is this striked out? What is said is entirely true. Engine can be running lean or rich due to bad/incompatible fuel pump. This can cause misfires and noticeable performance issues.
I have seen this quite some number of times.

ogundeleai:

Your comment indicates that you agree with what he/she wrote down and you provide additional clue to that effect.. My only concern is why you deleted the point you agree with

Mavor:
I just changed my fuel pump yesterday. Plus the fuel tank was very dirty so it had to be cleaned. All in all, plus transportation for the auto-mechanic to and from Ladipo and his workmanship, I spent almost 45k. 2nd time I'm changing fuel pump in a year. Dont know wassup with that. When I no dey pluck money from tree

UcLloyd:
My car is not starting, my mechanic is suggesting fuel pump. So we took the fuel pump for a diagnostic test and it came up 60/100. Please should I change following all I told u?

UcLloyd:
My car is not starting, my mechanic is suggesting fuel pump. So we took the fuel pump for a diagnostic test and it came up 60/100. Please should I change following all I told u?

nkemdi89:

What type of car are you using? Fuel pump ranges from 2500 to 18k for Toyota products, it's really not that expensive, clean your nozzles too in case you purchase bad fuel, if your vehicle uses injector always use injector cleaner, also ensure your mechanic uses the right fuel pump for you and fix it well too.

Mavor:
i use a camry 2011 se. i went to a Total station close to my office today. I applied their fuel treatment product before filling my tank. The mechanic advised I do that like 3 times on the next tank fill.

AutoReportNG2:
Virtually all modern vehicles that use internal combustion engines come equipped with fuel pumps. The fuel pump is the component that is responsible for delivering fuel from the gas tank to the the engine at the appropriate pressure required to meet performance demands. When the key is turned on, the fuel pump is activated and pressurized, which can be heard as a quiet whine or hum in some cars. The fuel pumps equipped on most modern vehicles are electric pumps that are mounted in the fuel tank. However, some vehicles are equipped with inline or mechanical style fuel pumps. Because the fuel pump is the component responsible for supplying the engine with the fuel required for it to run, any issues with it can cause major drivability and performance problems. Usually a bad or failing fuel pump will produce a few symptoms that alert the driver of a potential issue.

1. Whining noise from the fuel tank

One of the first symptoms of a problem with the fuel pump is a loud whining sound. An old or worn fuel pump may produce a noticeably loud whine or howl when it is running. Most fuel pumps will produce a quiet hum during their normal operation, however an excessively loud whine coming from the fuel tank is usually a sign that there is an issue.

2. Difficulty starting

Another symptom that is commonly associated with a problematic fuel pump is difficulty starting. Because of how they operate (constantly running whenever the ignition is turned on) over time fuel pumps can eventually wear out and weaken. A weak fuel pump may still pump fuel, however the vehicle may experience difficulty starting as a result of the lack in pressure. A weakened fuel pump can cause the vehicle to take more cranks to start than normal, and in more serious cases may even cause the vehicle to require multiple turns of the key before it will start.

3. Misfires and a decrease in power, acceleration, and fuel efficiency

Another symptom of a problem with the fuel pump is engine performance issues. As the fuel pump is what supplies the vehicle with the fuel required for combustion to occur, any issues with it can affect the engine’s fuel supply and cause issues. A faulty pump with low pressure will disturb the engine’s air-fuel ratio, which can cause all sorts of performance problems. Aside from hard starting, the vehicle may experience misfires, a loss in power and acceleration, a decrease in fuel efficiency, and even engine stalling.

4. Car is not starting

Another more serious symptom of an issue with the fuel pump is a no start condition. If the fuel pump fails completely, or to the point of not being able to provide enough fuel for the engine to run, the vehicle will experience a no start condition. The engine will still crank when the key is turned, however it will be unable to start due to the lack of fuel. A no start condition can also be caused by a wide variety of other issues, so having the vehicle properly diagnosed is highly recommended.

Fuel pumps are found on virtually all internal combustion engine equipped vehicles in one form or another. Most fuel pumps are built to last, however over time, as the vehicle enters high mileage, it is not uncommon for fuel pumps to require replacement. Another reason fuel pumps fail is if you regularly keep less than 1/4 of a tank of fuel in your car. If your vehicle is displaying any of the symptoms above, or you suspect that your fuel pump may be having an issue, have the vehicle inspected by a professional technician.



Source
http://www.autoreportng.com/2017/03/these-maybe-symptoms-of-bad-or-failing.html

nkemdi89:

If it still give you problem the best thing is to empty the tank, remove every drop, then service the nozzles or change it, then try another filling station like nnpc, change your fuel filter too, and please you have changed fuel twice with same mechanic? Please change your mechanic, it's even the job of an auto electrician.