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Home >   How To >   How to Repair Fuel Pump

How to Repair Fuel Pump


The fuel pump repair "How To" section of our site is here to help when you need that little bit of extra knowledge to get your project up and running. From the list below select the video or article that is related to info for the product line desired.


  Common Misdiagnosis Factors for Fuel Fump Assemblies  
  Fuel Pump Assembly Layout  
  Fuel System Layouts  
  The 9 Factors to Consider in Fuel System Diagnostics  
  How Much Does a Fuel Pump Cost?  
  How To Diagnosis Gasoline Direct Injection System  


Fuel Pump    


The fuel pump in a vehicle pushes fuel from the tank to the motor. The unit usually sits in the tank of the vehicle using an electric powered motor and consists of an array of valves and spring that work in conjunction to create suction. This suction draws fuel into the pump which causes the return spring to push the fuel up into the lines creating pressure. (The unit pictured is intended for normal vehicles, vehicles demanding higher fuel pressure have more robust fuel pumps than the unit pictured).


The fuel pressure in the lines is not regulated by the pump itself, the pump will just pump to its maximum ability with the voltage provided from the vehicle. The fuel pressure is regulated down the fuel lines at the motor by a fuel pressure regulator also known as a FPR. The higher the voltage applied to the pump, the faster the pump will move and the higher the flow of fuel will be from the pump. Generally, a fuel pump will be part of an assembly which will also include a sending unit, level arm and screen filter.


The fuel pump may fail, over time, resulting in various engine-related/acceleration problems. A common symptom of a bad fuel pump is a stalling/hesitating/surging engine. Your vehicle may also find it difficult to start as there won't be a sufficient supply of fuel from the fuel pump. You will find a decrease in the engine's efficiency/performance. In extreme cases, the engine will not start at all.


Choose your vehicle's right year, make and model and find your matching Fuel Pumps!


Buy Auto Parts is the best place online to get replacement fuel pumps that come with a warranty at unbeatable prices. We stock a wide range of OEM replacement and aftermarket parts for every make and model. To find the right fuel pump for your car, simply tell us your car's year, make and model. Your orders will be shipped from the warehouse closest to your location. We offer free shipping for purchases over $50. Our products have been throughly tested to meet or exceed industry standards. You can reach us on our support line at or leave us an email at [email protected], if you need help in choosing the part. Please feel free to leave us an online review. We value your feedback!


If the info you need is not covered in this section feel free to send us a message in our support section.


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