I have a 2015 Hyundai Accent with 45,000kms. The tank fuel pump has failed twice and the high pressure fuel pump once. Anyone know what would cause such failures?

  • High pressure pumps usually fail due to lack of maintenance, the spring usually ends up breaking or the diaphragm starts to leak.
    – Ben
    Aug 1, 2018 at 20:31
  • How certain are you that it's the fuel pump that's failing, have you checked for shorts, is the pump pumping fuel when power is applied to the 2 terminals that have continuity
    – user38183
    Dec 30, 2018 at 12:15
  • That is one repair I had a mechanic perform. He said he only used OEM fuel pumps because after market and rebuilts were not as reliable and changing them out in the fuel tank was a job. Aug 21, 2020 at 16:16

1 Answer 1


Could well be poor ie cheap fuel - cheap fuel can be cheap because while it meets the minimum standards it can be light on some of the additives.

Another possibility is a cheap fuel filter but as it is relatively new perhaps not.

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