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Failed NCT

Comments

  • #2
    mullingar
    Registered Users, Registered Users 2 Posts: 5,340 ✭✭✭mullingar


    burrowing-owl-head-turn.jpg


  • #3
    wotzgoingon
    Registered Users, Registered Users 2 Posts: 14,309 ✭✭✭✭wotzgoingon


    Thanks for your help but if you cared to read the post it tells you how to view them the correct way up.

    https://www.boards.ie/vbulletin/attachment.php?attachmentid=439735&d=1516817264

    https://www.boards.ie/vbulletin/attachment.php?attachmentid=439736&d=1516817400


  • #4
    ongarite
    Registered Users, Registered Users 2 Posts: 8,372 ✭✭✭ongarite


    The rest of the emissions data is cropped out like High Idle and Lambda reading
    What were they?

    Car make, model, engine, recent service history?


  • #5
    wotzgoingon
    Registered Users, Registered Users 2 Posts: 14,309 ✭✭✭✭wotzgoingon


    ongarite wrote: »
    The rest of the emissions data is cropped out like High Idle and Lambda reading
    What were they?

    Car make, model, engine, recent service history?

    It only failed on Low idle the high was fine.

    Low Idle*** CO 2.53 vol% ******** Above 0.50% fail

    High Idle***Lambda 1.00********** Pass

    High Idle*** CO 0.18 vol%*********Pass

    HC 71 ppm ********************Pass

    Toyota Levin BZ-R 1.6 4A-GE 20 valve

    Hasn't been serviced for a few months.


  • #6
    mullingar
    Registered Users, Registered Users 2 Posts: 5,340 ✭✭✭mullingar


    Suspension,,,, knackered passenger side shock. Ideally replace both shocks.
    Rear brakes,,,, needs to be adjusted or bled or needs pads.
    High CO on idle,,,, running far too rich, could be leaky injector, dirty/faulty maf sensor (over reading), faulty tps (ecu thinks you are tipping the go pedal). Many more possibilities so Needs proper diagnosis.


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  • #7
    Kenny Logins
    Registered Users, Registered Users 2 Posts: 9,060 ✭✭✭Kenny Logins


    The zeroes are for ovality and imbalance. That's what you'd want to see there, no?


  • #8
    wotzgoingon
    Registered Users, Registered Users 2 Posts: 14,309 ✭✭✭✭wotzgoingon


    Kenny Logins wrote: »
    The zeroes are for ovality and imbalance. That's what you'd want to see there, no?

    Yes that is correct I done some reading up on it since I posted and it seems the problem with the back brakes is the rear drivers side the passenger side is fine comparing with previous NCT results.

    What worries me the most now is the low idle emissions. It seems it will be tricky to fix.


  • #9
    rex-x
    Registered Users, Registered Users 2 Posts: 1,893 ✭✭✭rex-x


    you need two rear shocks. If the cars has drums (don't think the levin does) then needs shoes + cylinders and re setting up. If discs then likely seized pads and or calliper as your handbrake and footbrake are both poor on the one side.

    The emissions at low idle are very bad, you have HC of over 400 and high CO which indicates very poor running in the lower rev range. Its not an issue with your cat but may be more MAF related etc. Needs proper diagnostics to confirm.


  • #10
    wotzgoingon
    Registered Users, Registered Users 2 Posts: 14,309 ✭✭✭✭wotzgoingon


    rex-x wrote: »
    you need two rear shocks. If the cars has drums (don't think the levin does) then needs shoes + cylinders and re setting up. If discs then likely seized pads and or calliper as your handbrake and footbrake are both poor on the one side.

    The emissions at low idle are very bad, you have HC of over 400 and high CO which indicates very poor running in the lower rev range. Its not an issue with your cat but may be more MAF related etc. Needs proper diagnostics to confirm.

    Shocks were from a previous test. They were done and are fine now. Cheers for spotting anyway.

    I did disconnect that rear brake assembly when getting at a bushing after the NCT a month ago so maybe I done something. Though I am 100% sure I put it back together properly. But the numbers do not add up to that so I will take it apart at the weekend to see what is going on.

    Not many garages like to deal with emissions so I don't know what I will do also I am in Mayo so not really many Levin specialists around that I know of anyway.

    From looking around the web it seem to have a MAP sensor rather than a MAF what ever that means? :confused:


  • #11
    rex-x
    Registered Users, Registered Users 2 Posts: 1,893 ✭✭✭rex-x


    wotzgoingon wrote: »
    Shocks were from a previous test. They were done and are fine now. Cheers for spotting anyway.

    I did disconnect that rear brake assembly when getting at a bushing after the NCT a month ago so maybe I done something. Though I am 100% sure I put it back together properly. But the numbers do not add up to that so I will take it apart at the weekend to see what is going on.

    Not many garages like to deal with emissions so I don't know what I will do also I am in Mayo so not really many Levin specialists around that I know of anyway.

    From looking around the web it seem to have a MAP sensor rather than a MAF what ever that means? :confused:

    MAP is a manifold pressure sensor whereas MAF is mass air flow. Some cars have only a MAF or only a MAP (MAF is better) but many have both. Again thats only a suggestion as it could be many things (Your mixture is far too rich at low idle basically and the combustion is poor)


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