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Black smoke from exhaust

  • 14-12-2012 9:35am
    #1
    partyguinness
    Registered Users, Registered Users 2 Posts: 8,203 ✭✭✭


    Hi guys,

    Started up the car this morning and a lot of black smoke from exhaust. Never happened before. Had to drive 1 mile up the road to the nursery, turned off engine and smoke gone when started.

    Checked the oil levels on the dipstick and it is quiet low so will top up at lunch time. Also I should say that there is some leakage from the fuel injector seals (3 out of 4). Not much and garage told me a few months that it is not such a big deal and just keep an eye on it.

    Is this low oil level or is there something more sinister going on?

    Thanks a million.

    It has 112k miles, 2.0 diesel engine on a Hyundai Elantra. Full oil change in September.


Comments

  • #2
    dgt
    Closed Accounts Posts: 12,985 ✭✭✭✭dgt


    Nothin wrong with a bit a black reek.... No smoke no poke lad :pac::pac::pac:

    My complete guess would be leaning towards the injectors if they are leaking they might need replacing and sometimes cause a smoke screen when on the way out.

    Could also be a cold enough morning or poor quality diesel


  • #3
    Nissan doctor
    Closed Accounts Posts: 8,223 ✭✭✭Nissan doctor


    Black smoke on a diesel is a sign of poor combustion. If the car is perfect otherwise with no warning lights or running/power issues then it may just be the glow plugs getting a little weak which would be perfectly normal with over 100k.


  • #4
    Dartz
    Registered Users, Registered Users 2 Posts: 4,405 ✭✭✭Dartz


    Cold engine block makes it hard for diesels to burn fuel. Once it's warmed up a bit it'll be fine.


  • #5
    ljpg
    Registered Users, Registered Users 2 Posts: 241 ✭✭ljpg


    i'd be checking the air filter first,it may need replacing


  • #6
    partyguinness
    Registered Users, Registered Users 2 Posts: 8,203 ✭✭✭partyguinness


    Thanks for replies. It hasnt happened again since Friday morning and no warning lights. All seems okay otherswise. Topped up oil also. Thing was last Thursday night was quite mild compared to the ice and frost earlier in the week so the engine should not have been that cold.

    I am actually driving back to Ireland next weekend so this was the last thing I needed with ferry's booked etc

    Had a new air filter in June but will have a look anyway and will look into glow plugs.


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