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How to lower smoke-for NCT

  • 08-09-2012 5:58pm
    #1
    newtothis2011
    Registered Users, Registered Users 2 Posts: 71 ✭✭


    Had my 2006 hyundai trajet in today for NCT today, it failed on "Smoke" 3.490, I put Upper cylinder lubricant and injector cleaner in two hours before the test and drove it for an hour before the test.
    Any suggestions on what else I can try for next time to get it passed?


Comments

  • #2
    dr.fuzzenstein
    Banned (with Prison Access) Posts: 16,620 ✭✭✭✭dr.fuzzenstein


    What is upper cylinder lubricant?
    Best thing is to service it with the correct grade oil, new air filter, oil filter, fuel filter, taking it on a good, long drive and just in general keeping it serviced.
    Make sure all the sensors are OK, maybe have it hooked up to a fault code reader to see if something is amiss.
    My garage swears by a certain hydraulic oil, they will always put 500 ml into my tank, the last time they did that I passed the NCT with smoke way below permissible levels.
    Of course if the fuel pump/injectors/rings/pistons/cylinders are knackered, none of the above will help.


  • #3
    Pkiernan
    Registered Users, Registered Users 2 Posts: 4,310 ✭✭✭Pkiernan


    Try bringing it to a mechanic with your failure report, and have him fix it.

    2 advantages to this: your motor is not polluting, your motor will last longer.


  • #4
    [Deleted User]
    Posts: 23,339 ✭✭✭✭ [Deleted User]


    The limit is 3.0 so you're not too bad, ideally you should have put the potions in at least a few days beforre the test, it could well be Smokey due to the injector cleaner working. I'd be tempted to just throw it in for retest after a week or so. Give it plenty of welly in the interim and maybe have a peak at the air filter.


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