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Soo i failed emissions...help!

Discussion in 'Civic and CRX - EF' started by HATCHET_HONDA, Oct 2, 2008.

  1. HATCHET_HONDA

    HATCHET_HONDA scottie fizzle

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    had my 90 si d15b hatch emission tested today. first time since the swap. well after finally finding someone who knew how to drive a damn stick shift (3 test sites later) whattya know, it failed! high hydrocarbon and nitrogen levels..didnt fail by much , only like 20 points over standard. what could cause this? o2 sensor maybe? perhaps my timing is off a lil on the dizzy? any suggestions would help
     
  2. TurboMirage

    TurboMirage YEEAAAHHH VIP

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    CELs? bad cat?

    how long have you been driving it since the swap? have you run any seafoam through it? :)
     
  3. HATCHET_HONDA

    HATCHET_HONDA scottie fizzle

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    ive been drivin this hatch since april '07. my plates are due halloween this year..couldnt be the cat its brand new just installed it with the cat back like 6 months ago. and no cel either. one thing i have noticed is my air/fuel ratio guage isnt as active as it once was. i rarelt see it sweeping from lean to rich as i drive..im thinkin its the o2..hopefully
     
  4. TurboMirage

    TurboMirage YEEAAAHHH VIP

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    good observation right there :thumbsup:
     
  5. George777

    George777 ^^ Likes Bewbies

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    I had to replace my O2 sensor and play with the ignition timing to get my car to pass. Start with that and see if it works...
     
  6. Justin91civic

    Justin91civic New Member

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    It could be your o2 sensor but how long has it been since you did a tune up. I had to take mine 4 times and 2 different engines to get it to pass. I then just did a oil change, plugs wires and set my timing and viola it passed without any issues.
     
  7. Briansol

    Briansol Admins Admin VIP

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    beat the absolute piss out of your car for an hour before you bring it in. get that cat stupid hot.

    leave the car running until they take it in.

    i bet you'll meet the 20 points right there.
     
  8. HATCHET_HONDA

    HATCHET_HONDA scottie fizzle

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    the plan for round #2 is new o2 sensor, adjust timing if need be, and a can of sea foam...oh and a good long drive on tha highway..
     
  9. HATCHET_HONDA

    HATCHET_HONDA scottie fizzle

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    yea...strike #2 it failed again. readings actually got worse this time wtf!! went up 10 points..arrgghhh! new 02 and plugs..man how the hell am i gonna get the b16 to pass if the d is a PITA
     
  10. INJEN78

    INJEN78 HS LEGEND

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    run a bottle of the highest % rubbing alcohol..but also be sure to fill up the gas tank after you put it in..run the car really hard,and do just as B said
     
  11. pappaj

    pappaj New Member

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    I went through the same trouble with my zc. Did tune up played with timing timing tried additives. The thing I did to make it pass was retard the timing almost to the end of the slots on the distributor. After doing this my car was very sluggish bad on fuel. The car was guttless until about 4000rpms . But it passed with good numbers, so I got my sticker advanced the timing and it returned to life.
     
  12. HATCHET_HONDA

    HATCHET_HONDA scottie fizzle

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    thats exactly whut i need to do is choke off some fuel to lower the hydro carbons. what readings were high with the zc?? im high on hyrdocarbon and nitrogen. both are bout the same level above standard. with a dx i had i just pulled a vaccum line from the butterfly on the mani and that choked enuff fuel to pass it. to retard timing the dizzy slides towards the bumper right? or towards the firewall?
     
  13. eg6sir

    eg6sir Supa Mod Moderator VIP

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    its most likely your O2 .. had trouble passing too.. the hydrocarbon reading kept getting higher, so i took it to get a diagnostic done and it was the o2
     
  14. HATCHET_HONDA

    HATCHET_HONDA scottie fizzle

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    o2 has been replaced..no cel
     
  15. eg6sir

    eg6sir Supa Mod Moderator VIP

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    pcv valve? try running some seafoam through your motor...
     
  16. HATCHET_HONDA

    HATCHET_HONDA scottie fizzle

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    tried the seafoam....down only 9 points. but the pcv valve is on the list for tommorrow. plugs, wires, and a retarding of the iginition. come monday moring i better have new plates on my car lol
     
  17. eg6sir

    eg6sir Supa Mod Moderator VIP

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    when was the last time you changed the oil
     
  18. Justin66

    Justin66 The Hondaswap Canadian

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    Since its a swap you should be allowed to run it as a hotrod since its not the "original engine", meaning your limits can be much higher. I got mine done at Honda and thats what they did. I had a bad ecu wire that kept cutting off the number 3 piston as well, all the extra fuel burnt out the cat so they fixed the wire and got a new cheap cat, passed like pie.
     
  19. eg6sir

    eg6sir Supa Mod Moderator VIP

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    you live in Canada though right.. we cant do shit like that here
     
  20. HATCHET_HONDA

    HATCHET_HONDA scottie fizzle

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    1 month
     
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