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help please dpfi to mpfi

Discussion in 'HYBRID -> ED-EF / DA' started by kit88, Jan 21, 2005.

  1. kit88

    kit88 Junior Member

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    HI, I finish my dpfi to mpfi swap on my 88 hatch std, and my car strat with no problem, then I go to rewiew all the connections looking for loose wires I found everthing ok, but when I try to start my car again ¡¡¡ WON´T START!!!!

    I doble check evertingh and looks ok, The injectors are working and I got spark, but the car won´t start.

    I have 2 weeks trying to fix this with I cant.

    Please help, I check all the fuses and are OK.

    help
     
  2. hcivic.com

    hcivic.com Senior Member

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    ok did you wire the injectors correctly?
    check the timing?
    firing order?
    then get a can of ether and spray it in the tb as a friend cranks the car, it the car fires or sputters, it is a fuel issue if nothing happens chances are it is a timing issue,
     
  3. brian11to1

    brian11to1 Senior Member

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    What he said. Good Luck...
     
  4. kit88

    kit88 Junior Member

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    How can I check the timming, I´m new on this.
     
  5. racintweek

    racintweek Senior Member

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    make sure you have your ground on the t-stat housing on, its the ground for the ecu
     
  6. kit88

    kit88 Junior Member

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    I check ALL THE INJECTORS AND ARE OK.
    CHECK THE GROUND AND IS OK?

    WON´T START!!!
     
  7. brian11to1

    brian11to1 Senior Member

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    Gettin Fuel?
    Gettin Spark?
     
  8. Jeef

    Jeef NO MA'AM Moderator VIP

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    Did you connect both yellow/black wires from the old injectors to the resistor box? Try a different ecu, to see if yours is shot. Check for spark by pulling one plug out at a time while cranking the engine have a buddy check to see if there is spark coming from each plug. Don't hold the plug when you do this. Check your timing and plug order. If you don't know the plug order I can try to find a picture with the proper plug order. Did you solder your connections. Verify each connection to make sure none came loose. Check your fuses too.
     
  9. cheese9988

    cheese9988 Senior Member VIP

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    Do what jeef says and solder your connection if you didn't, even if you get your car running you would not want wiring problems in the future and having to try and figure out which wire gives you the problem.
     
  10. dragon2003

    dragon2003 Senior Member

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    well i just did dpfi-mpfi and well i haven't got my car back from the shop yet, but i should within a few hours. but are you using an si ecu?
     
  11. racintweek

    racintweek Senior Member

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    inj and firing order


    dizzy---4---3---2---1---timing belt
     
  12. dragon2003

    dragon2003 Senior Member

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    yeah i got my car back, but the only problem is that it would not run, but i got that problem fixed , but now it sounds like a modified nissan 240, what could be the problem?
     
  13. Jeef

    Jeef NO MA'AM Moderator VIP

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    Do you have a better description of the problem?
     
  14. dragon2003

    dragon2003 Senior Member

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    well it is miss firing, and i can't figure out what it is, i checked all the wiring and timing, so everything is in order, but when i start the car, the engine has a knocking sound and rocks back and forth. and when i took it for a drive it is lacking power.
     
  15. DelSlo

    DelSlo Senior Member

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    that sounds like a possible bad ground dragon, check the ground at the tranny and the one from the head to the frame (near power steering pump if equipped)
     
  16. Jeef

    Jeef NO MA'AM Moderator VIP

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    Check your distributor timing.
     
  17. dragon2003

    dragon2003 Senior Member

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  18. dragon2003

    dragon2003 Senior Member

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    well i checked everything, and the grounds are good, and the timing is good. it runs better, but it just runs sluggish now. And when i lightly hit the gas it sounds good, but when i give it more gas, it back fires and is lacking power. it sounds like something is clogged.
     
  19. CrazyAzn

    CrazyAzn Senior Member

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    that sounds like a timing issue, but then again thats just me.
     
  20. Get Juiced

    Get Juiced Junior Member

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    I had a problem similar to this and it was the two wires i added from the ecu to the dizzy, they weren't shielded wires which caused them to not produce enough signal to and from the dizzy, and it kept throwing the CAS code, or #4. It would start easily sometimes, then other times i would run the battery dead tryin to get it cranked, there probably a good chance this is your problem, what kinda wire are you using and if it is the proper wire its worth getting some new wire to try it anyway.
     
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