Why Fuel Pump Replacements Can Be Tricky

Fuel pumps are designed to transfer fuel from the fuel tank to the engine fuel management system. Fuel pumps only create flow from the tank to the fuel rail. However, the size of the lines and restrictions cause the fuel to create pressure.

When the fuel pressure is low, the symptoms are that either a fuel pump if failing or a fuel filter is clogged up.

Most of the time fuel filters get plugged due to lack of maintenance. Most people don’t realize that the fuel filter needs replaced due to the mineral deposits drawn into the fuel tank when fueling at a gas station.

Most modern vehicles today have a fuel filter and fuel pump as one unit making it to where the fuel pump must be replaced to change the filter.

Changing a fuel pump can be tricky. On older vehicles, the fuel pump was located on the engine block and usually was relatively easy to access. On the vehicles today, the fuel pump is located in the fuel tank making it to where the fuel tank must be removed to switch out the fuel pump.

Dealing with fuel tanks can be a bit tricky. It is best that the fuel tank is on or near empty. A full tank of gas can weigh up to 94 pounds, not including the tank itself. A whole unit can range from 125 to 250 pounds, depending if the fuel tank is plastic or metal.

When removing the fuel pump from the fuel tank, there is usually a float on the end of the pump. This can be tricky when removing. Just pull up on the pump and turn the pump to its side and the float will come out.

  • Note: Do not let the float break off inside the fuel tank. The float can be suck up to the fuel pump intake port and cause the pump to overheat. Also, do not get any debris inside the fuel tank. This will contaminate the fuel and possibly cause the new fuel pump to prematurely fail.

If a fuel filter is located inline between the fuel pump and the fuel rail on the engine, it is recommended to replace the prior to the pump is installed. This will aid in collecting any debris from the pump as it is new and may have small particles from the manufacture. Plus, the old filter may be plugged up causing a strain on the new fuel pump making it overheat and prematurely fail.

After replacing a fuel pump and fuel filter, it is highly recommended to fuel up at a gas station with good gas, such as Techron or Chevron. This fuel is very clean and has detergents that help clean the fuel system. Along with getting a good fuel, it is also good to drive the vehicle on a road trip to burn all the fuel in the tank resulting in flushing out all the old gas, which may be watered down.

If your fuel pump needs to be replaced, book one of our automotive specialists at YourMechanic for an easy and convenient service experience.


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Recent Fuel Pump Replacement reviews

Excellent Rating

(1,159)

Rating Summary
1,075
43
11
6
24
1,075
43
11
6
24

Chris

22 years of experience
2001 reviews
Chris
22 years of experience
Dodge Ram 1500 - Fuel Pump - Murrieta, California
I had Chris diagnos a dead fuel pump on my Ram 1500. He wrote up a quote with guarantee, and made a new appointment because he had to order part. Came early on next appt and went right to work on it. No screwing around, got er done and now my truck is back in service. Thanks Chris, your awesome!
Ford Explorer - Fuel Pump - Orange, California
This is my 3rd time I've requested Chris. After the first time I said I've found my mechanic. He's always on time. He's pleasant, friendly an helpful. He's professional and always does a great job. If I could I'd give him more than 5 stars. Thanks again Chris, appreciate you.

Raymond

27 years of experience
108 reviews
Raymond
27 years of experience
Ford Expedition - Fuel Pump - Victorville, California
He did a great job on my truck I greatly appreciate the service and the quality work that was done and I will defiantly be using you guys to work on my next car.
Infiniti QX56 - Fuel Pump Replacement - Apple Valley, California
Awesome worker, very professional will recommend this mechanic to anyone that needs a job done right. 

Bryant

12 years of experience
492 reviews
Bryant
12 years of experience
Ford Mustang - Fuel Pump Replacement - Indianapolis, Indiana
Bryant was great. Car runs as should. Billing is messed up . Invoice states 416.80 was charged. 466.80 was charged to my card.
Nissan 240SX - Fuel Pump - Camby, Indiana
I was able to trust Bryant working on my vehicle that was 2000 miles away. Bryant was hired to get a vehicle of mine running and mobile that I had placed in storage nearly eight years ago. Bryant was very responsive and professional. He got my vehicle running and ensured it could be driven on and off a transport vehicle in preparation of having the vehicle shipped to me across country. He did so without attempting to upsell any additional or unnecessary work when I could not be there to supervise or verify. The day after Bryant finished work on my vehicle it was loaded and shipped across country without a single issue or complaint from the transport carrier. Thanks Bryant! Job well done.

Matthew

33 years of experience
991 reviews
Matthew
33 years of experience
Ford F-150 - Fuel Pump - Norfolk, Virginia
Matt is a great technician full of knowledge and recommendations to keep your vehicle running it top shape but to improve on its performance. I recommend highly everyone use him for all of their auto needs. in 45 years I have met very few mechanics of his skill set, expertise, and mental caliber.
Dodge Dakota - Fuel Pump - Williamsburg, Virginia
Matt is the best mechanic around that you could ever have work on your vehicle, hands down. Great guy, I enjoy having him work on my 02 Dodge Dakota, 237, 500 miles and still going.

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