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2006 fuel pressure check

Discussion in '2nd Gen. Tacomas (2005-2015)' started by Catsondao, Oct 23, 2022.

  1. Oct 23, 2022 at 8:56 AM
    #1
    Catsondao

    Catsondao [OP] Member

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    I have 2006 Tacoma v6, can anyone show me location of fuel valve and step by step how to check fuel pressure. Thank you so much.
     
  2. Oct 23, 2022 at 9:00 AM
    #2
    whatstcp

    whatstcp currently drunk so don't listen to me

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    King + Archive Relocation Wheeler's bumps +hydros
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  3. Oct 23, 2022 at 9:55 AM
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    TnShooter

    TnShooter The TacomaWorld Stray

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    There isn’t a fuel tap.
    You have to T in to the existing lines.

    I’ll see if I can find a diagram. It’s floating around here somewhere
     
  4. Oct 23, 2022 at 9:59 AM
    #4
    Dm93

    Dm93 Test Don't Guess

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    Torspd, burrito782 and TnShooter like this.
  5. Oct 23, 2022 at 10:54 AM
    #5
    TnShooter

    TnShooter The TacomaWorld Stray

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  6. Oct 23, 2022 at 11:16 AM
    #6
    Catsondao

    Catsondao [OP] Member

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    Thank you all for quick reply.
    Dm93, is the attached picture belonging to 2006 4.0 L Tacoma? Is it on driver side?
     
  7. Oct 23, 2022 at 11:35 AM
    #7
    Dm93

    Dm93 Test Don't Guess

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    It's on my 14 but 2nd gens are all in the same spot, yes it's on the drivers side near the brake booster.
     
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  8. Oct 24, 2022 at 1:47 PM
    #8
    Catsondao

    Catsondao [OP] Member

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    Thanks. I have just ordered Betooll kit and will keep you updated. I will also snapshot the fuel pressure regulator to confirm as if I think it is.
     
  9. Oct 24, 2022 at 2:38 PM
    #9
    Jimmyh

    Jimmyh Well-Known Member

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    [​IMG]

    Fuel Flow:

    Tank >> Filter >> Pump >> Fuel delivery tubing >> Fuel Rail >> Fuel Rail Regulator ( Set to ~ 40 - 41.7 PSI) >> Return to tank.

    Fuel Pressure Regulator:

     
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  10. Oct 25, 2022 at 1:25 AM
    #10
    Taco'09

    Taco'09 Well-Known Member

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    OP, If you follow thru on this using the Betooll product I hope you will do a DIY with pics if possible. Do not take deadhead pressures thinking that they may represent the actual fuel pressures. They do not and will tend to send you on wild goose chases. Good luck :thumbsup:
     
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  11. Oct 29, 2022 at 2:38 PM
    #11
    Catsondao

    Catsondao [OP] Member

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    Hi all,
    Got the Betooll today. I did the T to the fuel line it read 26 psi, I know it's way too too low, I step on the gas pedal pressure gauge stays the same then it lower just a little once gas pedal released. Turned off the engine. Check the T connection I see a bit of gas leaked at Betooll end. Got it corrected

    Tried second time the pressure was read 20 psi, stepped on the gas it jumped to 25 psi then come back down to 20 once gas released but as soon as I stepped on the gas I heard a short burst of air blowing and engine hesitating. Turn off the car. The gauge pressure still read 20 psi. Come back about an hour it dropped to 15 psi.
    I am thinking short burst of air that is telling me the vacuum line open somewhere.
    I am wondering 2006 Tacoma has a fuel pressure regulator outside fuel tank? So I can check for vacuum line at fpr.
    In attached picture Is it the return fuel line?

    Thanks in advance for any suggestion.

    20221029_143858.jpg
     
  12. Oct 29, 2022 at 2:43 PM
    #12
    Bishop84

    Bishop84 Well-Known Member

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    Left is feed, right return. Test the left one.

    If I recall, the FPR vacuum line connects to the far back of the air cleaner box.
     
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  13. Oct 29, 2022 at 2:43 PM
    #13
    Dm93

    Dm93 Test Don't Guess

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    Yes the regulator is on the rail, the regulator increases pressure as vacuum decreases so I wouldn't suspect a broken vacuum line.
    The slight increase in pressure is likely the fuel pump going to high speed when you rev the truck.
     
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  14. Oct 29, 2022 at 2:50 PM
    #14
    Dm93

    Dm93 Test Don't Guess

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    Just a note if you want to verify the regulator isn't the culprit you can pop off the return line and put it in a bottle, if it isn't returning any or very little fuel your regulator is fine and you most likely have a failing fuel pump.
     
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  15. Oct 29, 2022 at 5:36 PM
    #15
    Jimmyh

    Jimmyh Well-Known Member

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    I posted an image of the fuel rail and regulator above...

    [​IMG]
     
  16. Oct 30, 2022 at 11:49 AM
    #16
    Catsondao

    Catsondao [OP] Member

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    Thank you all for your pictures and inputs. I'll locate fpr and any broken vacuum hose. I'll keep you updated.
     

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