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3.4l Tick (again) Fuel Pressure Regulator?

Discussion in '1st Gen. Tacomas (1995-2004)' started by TRDtaco99, Feb 7, 2020.

  1. Feb 7, 2020 at 11:05 AM
    #1
    TRDtaco99

    TRDtaco99 [OP] Active Member

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    I know the toyotas have a famous tick, but still trying to narrow it down. Mine has a whispy tick only under load. (Not idle) It's fairly loud and can easily be heard windows up in the cab. Sounds like its coming from the rear drivers side of the engine. I've read in other forums that it is most likely not the injectors, but it is actually be the FPR. Anyone else know anything about a ticking FPR?
     
  2. Feb 7, 2020 at 11:07 AM
    #2
    eon_blue

    eon_blue Straight Outta 4WP

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    Only when under load? Are you sure it's not pinging (pre-detonation) or spark knock?

    If you're unsure, try running a higher octane fuel (91 or 93) next tank - if it goes away, then that's it
     
    1997tacomav6 likes this.
  3. Feb 7, 2020 at 11:16 AM
    #3
    jammer

    jammer 2003 Toyota PreRunner 3.4L

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    If the Fuel Pressure Regulator is bad, I do know on the 3.4's the gas will at some point makes it way toward the air filter. Again, this with a bad diaphragm in the FPR.
    Not sure about it making a tick though.
     
    Last edited: Mar 3, 2020
  4. Mar 3, 2020 at 6:28 AM
    #4
    TRDtaco99

    TRDtaco99 [OP] Active Member

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    Tried 91 and it still remained. Anyone else?
     
  5. Mar 3, 2020 at 12:20 PM
    #5
    Wulf

    Wulf a̴̜̯̜̥̱̓̅͐̉ŝ̵̡̛̻̠̫̗͇̮̃̌̓̍͆̒̿͐̽̀̕͝͠s̵̡̳͒͌̎̄̓̉͛́͘ͅ

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    yes
    A ticking noise under load seems more likely to be an exhaust leak
     
    Rachelsdaddy likes this.
  6. Mar 3, 2020 at 2:45 PM
    #6
    Rachelsdaddy

    Rachelsdaddy Well-Known Member

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    I have yet to know of anyone who has had to replace one. I wish there was cuz I am beginning to suspect mine is acting up. Soooooo, if someone out there has had to replace one, please speak up. What made you change it?
     
  7. Mar 3, 2020 at 6:53 PM
    #7
    Kiloyard

    Kiloyard Road Warrior

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    There was some discussion here, not much, but @xtremewlr had a failure because the rubber dried out during an injector job.
    https://www.tacomaworld.com/threads...e-while-i’m-there.522162/page-2#post-22569516

    @Gibo says he had intermittent stalling on his 2.7L when his FPR went bad and replacing it fixed the problem.

    I haven't heard of an FPR causing a tick, though.
     
    xtremewlr likes this.
  8. Mar 3, 2020 at 7:18 PM
    #8
    CD20H

    CD20H Well-Known Member

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    Check your spark plug wires and boots for sparks migrating outside the boot. I had a Ferd F150 that had a intermittent spark tick.
     

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