Understanding Automotive Problems

Knowing what problems may arise in your diesel truck or car can help save you a lot of money – especially if you catch a developing problem early enough. One of the most common issues in diesel vehicles is fuel pump failure. While you might not know much about fuel pumps, you can easily learn how to spot a potential issue. 

So what signs and symptoms should you be on the lookout for? Here are four common signs of diesel fuel pump failure:

1. Odd Noises

Perhaps the most common sign of a fuel pump-related issue is odd noises. These noises are most common when starting up your vehicle. They might sound like a loud high-pitched whistle or even a scraping noise, depending on your vehicle. Regardless how the noise presents itself, if there is a fuel pump-related issue, you will certainly be able to hear it upon starting your vehicle. So if you hear anything odd or abnormal upon startup, definitely take your vehicle in to a diesel mechanic for diagnostics.

2. Loss of Power

Another telltale sign that your fuel pump is on the fritz is loss of power. This may happen at anytime; however, it is more likely to occur while accelerating. This should be noticeable, as your vehicle will suddenly jerk while your foot is on the gas pedal. The reason this occurs is because the gas reaches an obstruction in your fuel line, which causes your vehicle to suddenly stall before returning to normal acceleration.

3. Sputtering or Stalling at High Speeds

Vehicles with failing fuel pumps may also begin to stutter or stall while driving at high speeds. If this is related to the fuel pump, this will become a consistent issue – so be on the lookout for it. Luckily, this sign is fairly easy to spot. If you notice any sort of lag while driving at high speeds, it's likely the fuel pump. As you might expect, this symptom is caused by low pressure. When the fuel pump cannot deliver enough gas, the car will temporarily lag or stutter while driving at high speeds.

4. Complete Engine Stop

Finally, if your engine suddenly comes to a complete stop, it might be related to a failing fuel pump. When the amount of fuel getting fed through the engine isn't consistent, it can cause the vehicle to suddenly stop. Luckily, it should start again in a few tries so that you can get it to a mechanic.

As you can see, the signs and symptoms of a bad diesel fuel pump are pretty easy to spot. To learn more about these signs and what you should do when your fuel pump needs to be replaced, talk to a mechanic like those at Bethel Automotive.