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1975 élan Bombardier 248cc problems.

Discussion in 'All Terrain Vehicles' started by Swamp Donkey, Dec 8, 2011.

  1. Swamp Donkey

    Swamp Donkey [OP] Well-Known Member

    Joined:
    Jul 15, 2011
    Member:
    #59966
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    Fort St John B.C
    Vehicle:
    2011 4cyl SR5 auto 4x4
    I have a couple of old élan snowmobiles. The one 248cc twin cylinder runs awesome when cold. So for about 15 minutes it is a blast to ride around. But after the heat sinks into the whole engine and everything is good and warm it will eventually stall out and will not start no matter what I do. So because it runs good and idles good for quite awhile I am thinking it is not the carburator. Some people have said it is something to do with the ignition system. So what do you think it is? I have put in new plug wires, spark plugs, and swapped coils from a parts engine. I have never dealt with the points or condensers, but could these be my issue? Or could it be my stator gimmick?

    Hope I don't get the boot for my snowmobile question, it is an all terrain vehicle after all, with it's boogie suspension!
     
  2. eastcoastcowboy

    eastcoastcowboy just sittin' in the corner, havin' a beer

    Joined:
    Apr 17, 2011
    Member:
    #55083
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    First Name:
    Brian
    Redneckville, NB
    Vehicle:
    '11 4x4 acc cab SR5
    Probably not the news you want to hear. But bogging out and not running after it gets hot is a pretty common symptom of worn out piston and rings. I've had a couple old sleds do the same thing.
    If you've already swapped coils out, it's probably the next thing to look at.
    Drive it until it gets hot and quits, then do compression test while it's still hot. That should give you an idea. If compression is still OK, check crank seals.
     
  3. Swamp Donkey

    Swamp Donkey [OP] Well-Known Member

    Joined:
    Jul 15, 2011
    Member:
    #59966
    Messages:
    147
    Gender:
    Male
    Fort St John B.C
    Vehicle:
    2011 4cyl SR5 auto 4x4
    Thanks. Not a big deal putting pistons and rings in it I don't think. Compression did seem fine when cold. 110-120 if memory serves me right. Pistons and rings will probably cost as much as I paid for the whole ski-doo! $250 Bucks. Hehe
     
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