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Blue smoke and running rough with a new motor

Discussion in 'Bay Tech Clinic' started by seashell, May 10, 2020.

  1. seashell

    seashell Member

    Messages:
    58
    Location:
    Tasmania
    Hi folks
    I have a 2Litre 76 Kombi and the motor has just been redone 3000km ago. It has been running beautifully. I have had it stored for the last month or so and have started it once in that time. Today I went to re-start it and it would not idle, was blowing blue smoke and seemed as though it was running on 2 or 3 cylinders. I checked the plug leads and then I took it for a short drive - maybe 4 km and could not get it over about 40km/h - there was no power really.
    The oil level is about 10mm above the full line which is weird because I have been careful to make sure it was not overfilled - and in fact I haven't had to add any oil since the re-build anyway.
    I am wondering what the hell is going on! Any insights would be appreciated. Thanks
    Dave
     
  2. Barry

    Barry Well-Known Member

    Messages:
    4,595
    Location:
    Abbotsford NSW
    My guess is the needle and seat is sticking in one of your carbs.

    you now have fuel in your oil.

    this will need changed pronto.

    sometimes a short sharp tap to the top of carb clears it.

    otherwise the carb tops need to be taken off
     
    oldman and tintop like this.
  3. Barry

    Barry Well-Known Member

    Messages:
    4,595
    Location:
    Abbotsford NSW
    So this if flooding fuel into the cylinders and stopping it from firing.

    one side of your motor will have wet plugs
     
    tintop likes this.
  4. T1 Terry

    T1 Terry Well-Known Member

    Messages:
    1,410
    Location:
    Mannum South Australia
    Or even worse, the fuel has washed the bore and the new piston has grabbed the bore because the clearances were so close, due to it was not run in yet, and now you have a damaged motor. Not what you wanted to hear but a very real possibility. A compression test will determine if there is any piston/bore damage

    T1 Terry
     
  5. Barry

    Barry Well-Known Member

    Messages:
    4,595
    Location:
    Abbotsford NSW
    Ouch!!!
     
  6. ttmck

    ttmck Super Moderator Staff Member

    Messages:
    2,769
    Location:
    Hallett Cove STH AUS
    Is it parked on level ground what sort of fuel pump set up pls
     

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