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ve missing

Discussion in 'VE Holden Commodore (2006 - 2013)' started by pas gab, Jan 10, 2020.

  1. pas gab

    pas gab New Member

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    hi all after a bit of help,i have a VE SV6 2011 series 2.it has 116 k on it and always serviced,just done a trip of 2000ks and what it is doing from the start of the trip is i was driving for about 15 minutes all good like usual then as i was going up a hill about 80ks it started to have a miss,if you give it a boot full no miss,after about 45 minutes of driving i put some injector cleaner in it and half hour later the miss stopped,10 hours of driveing ,no miss,parked the car next day ran fine,following day took off and missed like mad and through engine light,going to check engine codes tomorrow,anyway drove it like that and put another bottle of injector cleaner in about an hour in the trip it came good again for about 8 hours of the drive,parked it and went to drive it this morning as it sat all night and its doing it again,what would you think i should be looking at as i first thought maybe bad fuel
     
  2. timd29

    timd29 Member

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    After two bottles of injector cleaner, change your oil and filter. Someone who knows what their talking about will give better advice, but 1 or more injectors are on the way out or you have a spark issue. Spark plugs or coils. Stick a code reader on see if it helps identify the issue. They cheap
     
  3. krusing

    krusing Well-Known Member

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    Get it scanned to see what caused the MIL to illuminate,
    Not all DTC cause the MIL to illuminate.
     
  4. greenacc

    greenacc Searching for the billion

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    The ks are low but quite likely to be a failed coil. Easy to swap on SIDI engine.
     
  5. Fu Manchu

    Fu Manchu Well-Known Member

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    There is a lot of things that can cause a miss.
    As Krusing said, get it scanned, see what it's doing.
     
  6. syked

    syked Donating Member

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    Also check whether the misfire is always on the same cylinder which will help pinpoint the issue.
     
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  7. pas gab

    pas gab New Member

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    cleared code and ran fine for 2 days then started again ,same code came up.so i took that coil out and plug ,the plug had traking marks on the porslum and the tip was cracked,also plugs were stuffed so i changed the plugs today and at this stage running smooth,see what happens in next few days
     
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  8. VS_Pete

    VS_Pete Donating Member

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    So the code number is?
     
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  9. pas gab

    pas gab New Member

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    misfire cylinder 3
     
  10. krusing

    krusing Well-Known Member

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    What code was it ?, for the records.
     
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  11. pas gab

    pas gab New Member

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    P0303
     
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  12. Fu Manchu

    Fu Manchu Well-Known Member

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    First check the following because this stuff is easy to check:

    "A misfire DTC could be caused by an excessive vibration from sources other than the engine.
    - A tire or wheel that is out of round or out of balance
    - Variable thickness brake rotors
    - An unbalanced drive shaft
    - Certain rough road conditions
    - Transmission operation
    - A damaged accessory drive component or belt"

    * High resistance in the circuits of the injectors could set a misfire DTC without setting an injector DTC.
    Test the injector circuits of the affected cylinder(s) for a high resistance if you suspect a condition

    The next step is to isolate the injector to see if revs change. Ideally you need a diagnostic tool for this.

    Check that coil and make sure theres no evidence of water damage, carbon tracking, oil deposits.
    It should look tickety boo.

    Swap the coil and see if the fault moves.

    Check the injector. Change the injector and see if the fault moves.

    Other ideas peeps?
     
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  13. greenacc

    greenacc Searching for the billion

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    Sounds like it's already fixed with the New plugs.
     
  14. Fu Manchu

    Fu Manchu Well-Known Member

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    What?


    * Scrolls back and reads properly *


    Oooohhhh.
     
  15. pas gab

    pas gab New Member

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    thanks all and yes always read the codes but as it happened when i vertially started a 2500 ks road trip i didn't have my scan tool with me,and found same cylinder was tripping code and pulled the plugs and found that plug was tracking bad and due to change,thus done and no drummers now,again thanks to all
     
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