355 - What's wrong with this injector waveform ? | Page 7 | FerrariChat

355 What's wrong with this injector waveform ?

Discussion in '348/355' started by yelcab, Sep 4, 2023.

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  1. taz355

    taz355 F1 Veteran
    Owner Silver Subscribed

    Feb 18, 2008
    6,059
    Indio Ca/ Alberta
    Full Name:
    Grant
    Mitchell’s directions on the locking plate were perfect
    With the plate positioned so the wires go out to the right you must push the plate away from you
    With the correct removal tool it works easy with the incorrect tool not so good
    The correct tool will push the pin out about 1/8 inch and then it’s release

    I used the tool from my gold kit because the $30 one off Amazon even though it had the correct tool the pins were too short by about 1/8 inch and would not push it out far enough
     
  2. taz355

    taz355 F1 Veteran
    Owner Silver Subscribed

    Feb 18, 2008
    6,059
    Indio Ca/ Alberta
    Full Name:
    Grant
    Update
    For what ever reason when I checked the coils last year the wires running to the bank one seemed fine but because the car. Was intermittent
    It was hard to find
    How I found it was pushing and pulling about 30 wires from inside the car until it cutout
    Then i found the wire 49 was the problem
    Car runs fine now but the traces above were when it was not running fine so I don’t understand why the traces would be bad just because of no spark.
    Maybe someone else would know?
     
  3. taz355

    taz355 F1 Veteran
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    Feb 18, 2008
    6,059
    Indio Ca/ Alberta
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    Grant
    Over the next year I am going to put the correct traces on this thread in case others have an issue
    Thanks for everyone’s insite and explanations.
     
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  4. Qavion

    Qavion F1 World Champ
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    Feb 20, 2015
    14,516
    Sydney
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    Ian Riddell
    So the RH bank coil trigger wire for cylinders 1 & 4.

    So you didn't need to wire in a new harness to the injectors?
     
  5. yelcab

    yelcab F1 World Champ
    Consultant

    Nov 29, 2001
    13,666
    San Carlos, CA
    Full Name:
    Mitchell Le
    I'm just glad the car is fixed after such a long time with this problem. Way to go Grant.
     
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  6. taz355

    taz355 F1 Veteran
    Owner Silver Subscribed

    Feb 18, 2008
    6,059
    Indio Ca/ Alberta
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    Grant
    Yes I wired in 1 wire to the coil
    The injectors were ok but for some reason when that coil is not firing the traces were bad for the injector but I am going To recheck now that it’s good because that makes no sense to me. How about you?
     
  7. taz355

    taz355 F1 Veteran
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    Feb 18, 2008
    6,059
    Indio Ca/ Alberta
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    Grant
    On the plus side I now have an injector cleaner that works, and a new scope that also checks every component live
    So the actual fix cost me 8 bucks without the extra tools ha ha.
    As Mitchell said what an ordeal for him and me.
    No I need to fly to San Fran and buy him a big old dinner or on his way to Alaska he needs to stop in since we are on the way directly
     
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  8. Qavion

    Qavion F1 World Champ
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    Feb 20, 2015
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    Ian Riddell
    Makes no sense to me, either.
     
  9. taz355

    taz355 F1 Veteran
    Owner Silver Subscribed

    Feb 18, 2008
    6,059
    Indio Ca/ Alberta
    Full Name:
    Grant
    I can plug in the pigtail Mitchell got be to make and disconnect a wire
    Nope I can’t I need a 3 wire pigtail
     
  10. Black360

    Black360 Formula Junior

    Oct 11, 2010
    454
    East of Eden
    Did this problem get resolved? Would really like to know the final fix.

    Thanks.
     
  11. yelcab

    yelcab F1 World Champ
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    Nov 29, 2001
    13,666
    San Carlos, CA
    Full Name:
    Mitchell Le
    It's fixed. The wiring harness was broken from the ECU to the injectors.
     
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