Fuel pump pressure and Walbro pumps

Discussion in 'ENGINE' started by Paul_JJ, Dec 16, 2015.

  1. Paul_JJ

    Paul_JJ Registered User +

    Hi everyone!


    It's time for me to replace the fuel pump!
    Is Walbro 255 reliable pumps? any good?

    Also, I was always wondering is the fuel pump always have the same pressure no matter the engine load? or is it regulated by the FPR in any way?


    Thank you in advance!
     
  2. Skalabala

    Skalabala Registered User +

    That pump is more than enough for what a 1.3 will ever handle.
    The pump will push around 5.5bar @ 255l/m and then the FPR will make sure that fuel rail pressure sits at around 3bar constant(depends on car)
     
    1 person likes this.
  3. Paul_JJ

    Paul_JJ Registered User +

    So they pump at maximum pressure at all times then?
     
  4. Skalabala

    Skalabala Registered User +

    That is normally how it works :) But there are exceptions but not close to planet starlet :p
     

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