Most common causes of fuel pump failure revealed

HELLA outlines comprehensive range of fuel pumps and fuel pump units

Most common causes of fuel pump failure revealed

HELLA, a prominent supplier of fuel pumps and fuel pump unit combinations, is highlighting the causes of pump failure and common misdiagnoses that can also occur.

The main cause of fuel pump failure is contamination, which can be initiated by dirt and debris entering the system when refuelling or from using poor quality fuel.

Driving frequently on a low fuel tank can also accelerate wear on the fuel pump, due to debris on the bottom of the fuel tank being disturbed and entering the pump.

However, technicians should be aware that more than half of all fuel pump replacements are the result of misdiagnosis, which is why HELLA recommends double checking the area to ensure that changing the pump is the correct course of action.

Electric fuel pumps operate at higher speed and draw less current than older style pumps and the complexity of modern engines means that several vehicle systems can disable them.

Components and technology that would not normally be associated with the fuel system such as security systems, drive train and oil/fuel pressure switches, now have the ability to render the fuel pump inactive, which can often result in misdiagnosis.

Fuel pump failure symptoms

  • Difficult, or non, starting
  • Extended engine cranking
  • Immediate or intermittent stalling
  • Rough idle
  • Poor acceleration
  • Severe engine lag

If any of these symptoms appear, technicians should investigate the fuel system and check for any faults.

As an integral part of the fuel delivery system, fuel pumps should be replaced with premium quality products and HELLA’s comprehensive range provides an ideal solution to a large number of applications and as an added benefit, each fuel feed unit comes complete with the gasket.

For more information on the HELLA range call 01295 662400, email [email protected] or select ‘more details’ below.

Have your say!

0 1

Lost Password

Please enter your username or email address. You will receive a link to create a new password via email.