BMW K bikes (Bricks)

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1Back to top Go down    Blowing smoke on startup on Mon May 26, 2014 8:19 pm

Rockman


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My 84 K100RT blows quite a bit of smoke when its first started after sitting a week or so on the centre stand. It eventually clears up when its warm, and it doesn't seem to be using any oil to speak of. My first thought is that the throttle bodies may need balancing, but are there any other suggestions? Its done 127000 km.

    

2Back to top Go down    Re: Blowing smoke on startup on Mon May 26, 2014 8:43 pm

ReneZ

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Keeping the oil level above the centre dot when the engine is not running?


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Greetings from Florida! Having a 'new' K :cyclops: Surprised-o:

Rene


BMW K100 - 1985 (0030029)
BMW K1200GT - 2003 (ZK01223)
    

3Back to top Go down    Re: Blowing smoke on startup on Mon May 26, 2014 8:58 pm

brickrider

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Perhaps a leak-down test is in order?

    

4Back to top Go down    Re: Blowing smoke on startup on Mon May 26, 2014 9:06 pm

Rockman


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@ReneZ wrote:Keeping the oil level above the centre dot when the engine is not running?
dead on the centre dot when not running, and returns to there after.

    

5Back to top Go down    Re: Blowing smoke on startup on Mon May 26, 2014 9:10 pm

Rockman


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@brickrider wrote:Perhaps a leak-down test is in order?
Probably, but wouldnt it also use oil when warmed up an running if the rings were worn?

In any case, I'm not worried about it enough to do any major engine work, just wondering if there is a common cause.

Maybe I should also add that the idle when its cold and the choke is on is a bit "lumpy", but smooths out when its warm.

    

6Back to top Go down    Re: Blowing smoke on startup on Mon May 26, 2014 9:15 pm

rosskko

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I think the amount of oil needed to blow billows of smoke from a cold engine is actually very little.

You will probably find it is using oil (where else can it come from?), but the amount is negligible and is not noticed through the round window.



Maybe we can ask Big Ted?


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1986 K100RT VIN 0093801K100RT with summer fairing for a northern visitor

Basic/2 6308802K100CJ05/1988

K1100RS 0194321
    

7Back to top Go down    Re: Blowing smoke on startup on Mon May 26, 2014 9:45 pm

Rockman


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@rosskko wrote:I think the amount of oil needed to blow billows of smoke from a cold engine is actually very little.

You will probably find it is using oil (where else can it come from?), but the amount is negligible and is not noticed through the round window.



Maybe we can ask Big Ted?

Big Ted knows all..
You are probably right. I think I'll just balance the throttle bodies, slap some new plugs in it and live with it. Somewhere I have a new set of injectors, so they might go in as well if I can find them.

    

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