Wondering how to start a car with a bad fuel pump? If your car won’t start, the fuel pump is probably to blame. A tired pump cannot deliver enough fuel to start or run an engine, so you can’t drive to work or to the local drag strip. If this happens to you, it’s time to repair the fuel pump. To do so, you’ll need to diagnose the problem using a fuel-pressure gauge.
Here are some tips for diagnosing your pump.
Symptoms of a Car With a Bad Fuel Pump
- Stalling: One of the first signs of a bad fuel pump when starting – and one of the most frustrating – is when the car stalls repeatedly during warm temperatures. If you haven’t noticed this before, you should get your car checked by a mechanic. Luckily, diagnosing a bad fuel pump is much easier than you might think! Here are some common symptoms and possible fixes.
- Sputtering: If you hear sputtering noises when you start your car, you may have a bad fuel pump. Fuel pumps are designed to supply an even stream of gas to the engine. When the pump isn’t working well, the fuel isn’t being pumped out at a consistent pressure, which causes the engine to stall.
- Clunking: If you’ve heard the sound of a clunking sound when you turn on your car, the fuel pump is likely to be the culprit. In some cases, anti-theft systems will disable the fuel pump circuit, stopping it from functioning properly. If this is the case, you should contact a mechanic. If the sound persists, check the connectors and plugs to ensure that they’re working properly.
Causes of a bad fuel pump:
One of the most reliable signs of a faulty fuel pump is a blown fuse. If you have this problem, it means that your pump has failed. This symptom may also be accompanied by a sputtered engine, which means that it is not able to provide optimal fuel pressure to the engine. If you’ve noticed multiple problems with your pump, you need to replace it as soon as possible.
Besides being annoying, the symptoms of a bad fuel pump can also make driving difficult. Not only is it embarrassing to be stuck in traffic, but it can also put your life in danger. A failing fuel pump will also stop working frequently and intermittently.
Even worse, it will only cause you to pay a high repair bill. So what should you do? Here are some tips below to help you deal with a bad fuel pump.
You should visit a professional mechanic as soon as you notice these symptoms. While a failed fuel pump can be expensive, a competent service technician will be able to diagnose the issue and recommend the best course of action.
While the replacement process isn’t necessarily the most convenient, it’s often worth the expense. In some cases, you may have to wait for the part to arrive. In such cases, most dealers offer free loaner cars and rides home.
How to repair a bad fuel pump:
A failing fuel pump can cause a great deal of inconvenience. It’s hard to start your car and the lack of fuel can leave you stranded.
Fortunately, there are ways to get it started. You may be surprised to know that cycling the key can also re-prime the fuel line. It’s important to note that this method only works temporarily. This is an effective method only when the pump is in the engine compartment.
You can start a car with a bad fuel-pump if you have an external fuel pressure gauge. When a fuel pump fails, it reduces the pressure required for starting, which can cause problems with performance.
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In such cases, external pressure helps maintain the correct level of pressure. This method is best for a car with a bad fuel pump. This is an effective way to start a car with a bad pump.
To test if the fuel pump is failing, first turn the ignition to the ON position. Listen for any noises coming from the rear of the vehicle. If you don’t hear anything, check the fuel pressure gauge to see if it’s a blown fuse or relay. If the fuel pump fuse is blown, check the fuse holder by using a multimeter. It should read around 12:00.