1. Welcome to Tacoma World!

    You are currently viewing as a guest! To get full-access, you need to register for a FREE account.

    As a registered member, you’ll be able to:
    • Participate in all Tacoma discussion topics
    • Communicate privately with other Tacoma owners from around the world
    • Post your own photos in our Members Gallery
    • Access all special features of the site

Feels like loss of prime?

Discussion in '1st Gen. Tacomas (1995-2004)' started by cumminsdiesel, Nov 14, 2009.

  1. Nov 14, 2009 at 4:32 PM
    #1
    cumminsdiesel

    cumminsdiesel [OP] Well-Known Member

    Joined:
    Nov 14, 2009
    Member:
    #25929
    Messages:
    73
    Gender:
    Male
    First Name:
    Alex
    Brecksville, Ohio
    Toytec coilovers, skyjacker leaf springs.
    Well I decided to get a Toyota to drive back and forth to college (diesel is too much!). Anyways, just bought a 2003 Tacoma with around 115k miles. Kind of pissed cause I bought it "As Is", and I figure out a week later that if it sits for a day or so, it's a pain in the ass to start. It just cranks and cranks for maybe 5-8 seconds until slowly sputtering to a start. Fuel pump? What else can I check? I am a diesel guy so I don't know too much about these 2.7L inline 4's.

    Thanks in advance, Alex
     
  2. Nov 14, 2009 at 6:54 PM
    #2
    apex9r

    apex9r mountain rover

    Joined:
    Oct 22, 2009
    Member:
    #24751
    Messages:
    79
    Gender:
    Male
    Vehicle:
    '97 4x4 2.7 5spd
    starting from scratch
    fuel filter most likely, any dash lights on?
     
  3. Nov 14, 2009 at 7:07 PM
    #3
    chris4x4

    chris4x4 With sufficient thrust, pigs fly just fine. Moderator

    Joined:
    May 8, 2008
    Member:
    #6497
    Messages:
    106,154
    Gender:
    Male
    First Name:
    FlimFlubberJAM
    Tenoe, AZ
    Vehicle:
    2013 Rubicon Unlimited,
    4.10 gears, sliders, and lots of buttons.
    The fuel filter on the 2.7 is under the air intake. You may want to check the plugs, and clean the MAF sensor with some Electronic Contact cleaner.

    [​IMG]
     
  4. Nov 14, 2009 at 7:09 PM
    #4
    chris4x4

    chris4x4 With sufficient thrust, pigs fly just fine. Moderator

    Joined:
    May 8, 2008
    Member:
    #6497
    Messages:
    106,154
    Gender:
    Male
    First Name:
    FlimFlubberJAM
    Tenoe, AZ
    Vehicle:
    2013 Rubicon Unlimited,
    4.10 gears, sliders, and lots of buttons.
    And Welcome to TW! :)
     
  5. Nov 14, 2009 at 7:09 PM
    #5
    apex9r

    apex9r mountain rover

    Joined:
    Oct 22, 2009
    Member:
    #24751
    Messages:
    79
    Gender:
    Male
    Vehicle:
    '97 4x4 2.7 5spd
    starting from scratch
    haha and by the way i too recently went from diesel to taco:cheers: had a 2001 CTD qd cab 6 speed and then a 2003 CTD qd cab 6 speed. miss em but couldnt afford the latter had to sell:(
     
  6. Nov 14, 2009 at 7:12 PM
    #6
    chris4x4

    chris4x4 With sufficient thrust, pigs fly just fine. Moderator

    Joined:
    May 8, 2008
    Member:
    #6497
    Messages:
    106,154
    Gender:
    Male
    First Name:
    FlimFlubberJAM
    Tenoe, AZ
    Vehicle:
    2013 Rubicon Unlimited,
    4.10 gears, sliders, and lots of buttons.
    05 quad cab 6 speed 4x4 long bed here....:eek:
     
  7. Nov 14, 2009 at 7:19 PM
    #7
    XBrown

    XBrown Spartacus!

    Joined:
    Jun 11, 2009
    Member:
    #18334
    Messages:
    58
    Gender:
    Male
    First Name:
    Xavier
    Phoenix, AZ
    Vehicle:
    04 Tacoma SR5
    Sounds like either your fuel pressure regulator, or fuel check valve is leaking internally. If you shut it off, and start it right back up again, does it start normally?
     
  8. Nov 15, 2009 at 12:06 AM
    #8
    cumminsdiesel

    cumminsdiesel [OP] Well-Known Member

    Joined:
    Nov 14, 2009
    Member:
    #25929
    Messages:
    73
    Gender:
    Male
    First Name:
    Alex
    Brecksville, Ohio
    Toytec coilovers, skyjacker leaf springs.
    Haha yeah I went from a 650 hp 2001 Cummins, but I love the reliability of Toyota's and the fuel mileage!!

    But yeah after shut off, it will start 'somewhat' right up (better than first start up), but will still stutter.

    Keep It Simple Stupid! I will replace fuel filter first and go from there!
     
  9. Nov 15, 2009 at 11:55 AM
    #9
    XBrown

    XBrown Spartacus!

    Joined:
    Jun 11, 2009
    Member:
    #18334
    Messages:
    58
    Gender:
    Male
    First Name:
    Xavier
    Phoenix, AZ
    Vehicle:
    04 Tacoma SR5
    If you have access to a fuel pressure gauge, I'd check the rest pressure. With the engine running, the gauge should say something like 45 psi (not sure of the exact specs). If it's below specs while running, the fuel filter could indeed be clogged.

    But after you shut the engine off, it should hold at roughly the same pressure as when it was running. If it bleeds off to zero, all the pressure in fuel rail is leaking back in to the tank.

    Much akin to starting a carbureted car with an empty float bowl.

    Hope this helps.
     
  10. Nov 15, 2009 at 1:20 PM
    #10
    chris4x4

    chris4x4 With sufficient thrust, pigs fly just fine. Moderator

    Joined:
    May 8, 2008
    Member:
    #6497
    Messages:
    106,154
    Gender:
    Male
    First Name:
    FlimFlubberJAM
    Tenoe, AZ
    Vehicle:
    2013 Rubicon Unlimited,
    4.10 gears, sliders, and lots of buttons.
    To add: Bad injectors can cause them to bleed off into the Cumbustion chamber, resulting in a similar condition.
     
  11. Jan 25, 2010 at 7:24 PM
    #11
    cumminsdiesel

    cumminsdiesel [OP] Well-Known Member

    Joined:
    Nov 14, 2009
    Member:
    #25929
    Messages:
    73
    Gender:
    Male
    First Name:
    Alex
    Brecksville, Ohio
    Toytec coilovers, skyjacker leaf springs.
    Thanks for the help.. It started happening every time I stop for fuel and try to start.. It just starts for less than a second and shuts off, so I keep cranking and keep rpm's up for about a minute and it is fine.. Starting to agitate me. The fuel filter was changed so that's out of the question. But I have also realized when the engine is at operating temp. when coming to a stop, rpm's will go from approx. 1,000 to 750 and run a little rough.
     
  12. Jan 26, 2010 at 1:53 PM
    #12
    MowTaco

    MowTaco Well-Known Member

    Joined:
    Sep 9, 2009
    Member:
    #22530
    Messages:
    3,820
    Gender:
    Male
    First Name:
    Matt
    South Dakota
    Vehicle:
    03 GMC Sierra
    ^Mine does that too. I'm waiting for the next oil change to see if sea foam will clean it up.
     
  13. Jan 27, 2010 at 11:43 AM
    #13
    cumminsdiesel

    cumminsdiesel [OP] Well-Known Member

    Joined:
    Nov 14, 2009
    Member:
    #25929
    Messages:
    73
    Gender:
    Male
    First Name:
    Alex
    Brecksville, Ohio
    Toytec coilovers, skyjacker leaf springs.
    Going home this weekend and will be able to work on it, anyone have anything else I can replace, or better yet, test?
     
  14. Jan 27, 2010 at 11:48 AM
    #14
    98tacoma27

    98tacoma27 is gooder 'en chicken Moderator

    Joined:
    Dec 18, 2008
    Member:
    #11714
    Messages:
    49,823
    Gender:
    Male
    First Name:
    Ben
    Beech Creek
    Vehicle:
    05 Tundra SR5 (+250k AND COUNTING), 88 SR5 PU (SOLD), 98 TRD OR (CRUSHED)
    5100's all on fours
    You should be running in the 750 range at idle. I would suggest cleaning the throttle body and the IAC valve. The IAC is attached the bottom of the throttle body. Check your plugs for proper gap. (.039-.041 ")
     
  15. Jan 28, 2010 at 5:57 AM
    #15
    cumminsdiesel

    cumminsdiesel [OP] Well-Known Member

    Joined:
    Nov 14, 2009
    Member:
    #25929
    Messages:
    73
    Gender:
    Male
    First Name:
    Alex
    Brecksville, Ohio
    Toytec coilovers, skyjacker leaf springs.
    Alright thank you, sounds good. I never knew these ran around 750 at idle. I will clean TB tonight. And what about the IAC? Is there a correct way to clean it?
     
  16. Jan 28, 2010 at 6:04 AM
    #16
    Afwrestler1986

    Afwrestler1986 Well-Known Member

    Joined:
    May 20, 2008
    Member:
    #6768
    Messages:
    3,662
    Gender:
    Male
    First Name:
    Matt
    Johnstown, NY
    Vehicle:
    01 trd 4X4 ex cab manual
    Gray wire, Some lights in the bed area, and some character marks throughout.
    Yup, 750. Most of the easy fixes for it are pretty cheap and straight forward.

    My 2001 V6 did the same stuff when I first bought it, all I had to do was run the seafoam through the vacuum lines, and clean the TB and all was well with it.
     
  17. Jan 28, 2010 at 6:41 AM
    #17
    98tacoma27

    98tacoma27 is gooder 'en chicken Moderator

    Joined:
    Dec 18, 2008
    Member:
    #11714
    Messages:
    49,823
    Gender:
    Male
    First Name:
    Ben
    Beech Creek
    Vehicle:
    05 Tundra SR5 (+250k AND COUNTING), 88 SR5 PU (SOLD), 98 TRD OR (CRUSHED)
    5100's all on fours
    Basically you unbolt it from the TB and just clean it with an old toothbrush. Use carb cleaner or as Matt stated Seafoam.
     
  18. Jan 28, 2010 at 6:51 AM
    #18
    98tacoma27

    98tacoma27 is gooder 'en chicken Moderator

    Joined:
    Dec 18, 2008
    Member:
    #11714
    Messages:
    49,823
    Gender:
    Male
    First Name:
    Ben
    Beech Creek
    Vehicle:
    05 Tundra SR5 (+250k AND COUNTING), 88 SR5 PU (SOLD), 98 TRD OR (CRUSHED)
    5100's all on fours
  19. Mar 18, 2012 at 12:07 PM
    #19
    gumeboy67

    gumeboy67 New Member

    Joined:
    Mar 18, 2012
    Member:
    #75124
    Messages:
    2
    Gender:
    Male
    First Name:
    jose
    34785
    Vehicle:
    prerunner sr5
    i got the same problem with losing fuel prime at firts i toutgh that it was parking on the hill side ,but i got worst and i change the pump and fuel filter and still the same,so am trying te get to the root of the problem,this got me puzzle,i am a diesel engine mecanic and this gas engine has me puzzle.if i can find was wrong i will fixed it thanx...
     
To Top