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hard starting after sitting for a while

Discussion in 'Diagnosis/Help' started by johnboi85, Nov 2, 2009.

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  1. johnboi85

    johnboi85 Well-Known Member

    first starts of the day, it take 3 cranks to get it to fire. car cranks fine. it just takes a while to start. problem just came up. starting the car was fine a week ago. if i turn off the car and restart it after a couple minutes, it fires first try. if i let the car sit for more than 15 minutes. its back to a delayed start but not as bad as if i left the car off overnight. i believe fuel is bleeding back into the tank. anyone?
     
    johnboi85, Nov 2, 2009
    #1
  2. johnboi85

    johnboi85 Well-Known Member

    oh btw, when the car starts. it runs like a champ.
     
    johnboi85, Nov 2, 2009
    #2
  3. Stig

    Stig ST162 Guru Donated!

    Try some injector cleaner, I believe your start injector is blocking
    btw fuel is supposed to circulate back to the tank
     
    Stig, Nov 3, 2009
    #3
  4. johnboi85

    johnboi85 Well-Known Member

    cold start injector has been removed and blocked off. vehicle was running fine after cold start injector was removed. this problem just happened a few days ago.
     
    johnboi85, Nov 3, 2009
    #4
  5. Stig

    Stig ST162 Guru Donated!

    Sounds like the bores may be damaged as a result of running too rich,
    whats the compression readings?
     
    Stig, Nov 3, 2009
    #5
  6. johnboi85

    johnboi85 Well-Known Member

    compression test done right after problem started. it was 138 all across the board (engine has less than 500 miles on it).
     
    johnboi85, Nov 3, 2009
    #6
  7. Stig

    Stig ST162 Guru Donated!

    I'm out, it's doing what it's supposed to do

    Try spraying some fuel into the manifold, if it starts easy the start injector needs to go back in,
    I'd like to know why you removed it?, what other changes did you make?
     
    Stig, Nov 3, 2009
    #7
  8. 89celicagt

    89celicagt Well-Known Member Staff Member Super Moderator Donated!

    Check the plugs if they're fouled and/or replace them
     
    89celicagt, Nov 3, 2009
    #8
  9. johnboi85

    johnboi85 Well-Known Member

    sparkplugs are also new. cold start injector was removed after doing a 3sge side feed intake manifold. what i also found today was that a heavy smell of gas was coming out of the tailpipe after it stumbled to life after a few cranks. also black soot on the muffler and possibly black smoke when starting. i believe fuel is leaking into the combustion chamber after shut down. like i said, car runs fine after being started. car is parked for now until i figure this out. im really leaning towards the injectors leaking. does anyone have a good set of used stock 3sgte injectors they wanna sell?
     
    johnboi85, Nov 3, 2009
    #9
  10. johnboi85

    johnboi85 Well-Known Member

    okay problem is confirmed. injector is leaking fuel into the cylinder in cylinder number 1 and 4, #1 being the most significant. will need to buy new injectors. i found a set for a 7mgte supra top feed 440cc. i heard they were the same. can anyone confirm? thanks.
     
    johnboi85, Nov 5, 2009
    #10
  11. 86CelicaGTS

    86CelicaGTS Well-Known Member

    little oversized for NA motor dont ya think?
    o do u have a trac?
     
    86CelicaGTS, Nov 5, 2009
    #11
  12. johnboi85

    johnboi85 Well-Known Member

    i have a trac :D
     
    johnboi85, Nov 5, 2009
    #12
  13. Stig

    Stig ST162 Guru Donated!

    We could have solved this ages ago with more info!
    Please guys, tell as much as you can before wasting other's time -
    A small, insignificant detail ie. leaking injectors could make all the difference and eliminate a lot of guessing

    FE g1 = 195cc
    GE g1 = 220cc
    GTE g1/2 = 440cc
    GTE g3 = 540cc
    These cars must be thirsty as ........
     
    Stig, Nov 5, 2009
    #13
  14. johnboi85

    johnboi85 Well-Known Member

    umm the problem was the leaking injectors. if i knew the injectors were leaking fuel into the combustion chamber i wouldnt have posted :D
     
    johnboi85, Nov 6, 2009
    #14
  15. eNtraxGT88

    eNtraxGT88 Well-Known Member Donated!

    hey stig, my car in the morning does the same thing after being left 6 hours or more. 3 extended cranks to get it going. i pulled the CSI out and started the car and i saw no fuel spraying out.

    few questions:
    should i take out the fuel line to the CSI to see if there's fuel shooting out as well?

    http://st162.net/forum/attachment.php?attachmentid=509&d=1329323543
    anyone know which pin is which on the CSI? so i can put 12v to the csi like on this bgb page:
    http://st162.net/forum/attachment.php?attachmentid=511&d=1329323543
     
    Last edited: Feb 28, 2012
    eNtraxGT88, Feb 28, 2012
    #15
  16. Stig

    Stig ST162 Guru Donated!

    Looks similar

    I'd just loosen the pipe to the CSI and see if any fuel escapes, that would isolate a bad CSI/switch
    Check the cold start injector switch
    If no fuel escapes you need to check the pump is running
    [​IMG]
     
    Last edited: Feb 28, 2012
    Stig, Feb 28, 2012
    #16
  17. eNtraxGT88

    eNtraxGT88 Well-Known Member Donated!

    edited above post after sifting through the bgb again

    would you happen to know which pin i can put 12v to on the injector itself?
     
    eNtraxGT88, Feb 28, 2012
    #17
  18. Spiderman

    Spiderman Well-Known Member

    Why can't I access these links ? Wrong 'address' no ?
    I notice the old site is gone now.
     
    Spiderman, Feb 28, 2012
    #18
  19. eNtraxGT88

    eNtraxGT88 Well-Known Member Donated!

    i think it's avail for donated folks maybe?
     
    eNtraxGT88, Feb 29, 2012
    #19
  20. Spiderman

    Spiderman Well-Known Member

    Hmmmm........ your not sure, I'm not sure.......... Anybody else ?
     
    Spiderman, Feb 29, 2012
    #20
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