BMW K bikes (Bricks)

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1Back to top Go down   K1100lt running hot Empty K1100lt running hot Wed May 04, 2022 2:53 pm

diveshadow

diveshadow
active member
active member
My K1100lt stays just at the edge of the red for temp.
Where should my gauge be staying while riding? At the edge of red even during cool mornings.


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96 K1100LT 0302263
30,000 miles
    

2Back to top Go down   K1100lt running hot Empty Re: K1100lt running hot Wed May 04, 2022 4:25 pm

moriarti

moriarti
Life time member
Life time member
Not really, i would expect it to be mid green. ideally. you dont say if fan kicks in or temp light comes on so i would check coolant mix, test thermostat, just to be sure. Smile Smile
PS worth testing temp gauge as well scratch



Last edited by moriarti on Wed May 04, 2022 4:31 pm; edited 1 time in total (Reason for editing : senior moment's)


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1984 k100 rs red/black VIN  0004449
    

3Back to top Go down   K1100lt running hot Empty K1100lt running hot Wed May 04, 2022 5:44 pm

diveshadow

diveshadow
active member
active member
Fan does come on, no temp light. I just don't remember
seeing it run this hot. Is there an ohm test for the gauge?


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96 K1100LT 0302263
30,000 miles
    

4Back to top Go down   K1100lt running hot Empty Re: K1100lt running hot Wed May 04, 2022 6:10 pm

Point-Seven-five

Point-Seven-five
Life time member
Life time member
On my bikes, the BMW temperature gauge needle stays around the 11 o'clock position when moving.  When stuck in traffic it will go to the 1 o'clock position.  About half way from there to the red the fan will come on and the temperature will come down to the needle at the 12 o'clock position.

If your gauge is reading high, are you sure the engine isn't overheating.  The cooling system on K bikes can be a little marginal in hot weather.  If the passages in the radiator are coated with mineral deposits from a previous owner who filled the system with well water or the fins are full of bugs, the radiator's cooling efficiency will be reduced.  It's also possible that the thermostat isn't fully closing off the radiator bypass when the engine comes up to operating temperature.


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Present:
1994 K75RT
1991 K100RS


Past:
1988 K100RS SE
1994 BMW K75S
1992 BMW K100RS
1982 Honda FT500
1979 Honda XR185
1977 Honda XL125
1974 Honda XL125
1972 OSSA Pioneer 250
1968 Kawasaki 175
    

5Back to top Go down   K1100lt running hot Empty K1100lt running hot Wed May 04, 2022 6:28 pm

diveshadow

diveshadow
active member
active member
Two years ago I replaced the thermostat and coolant. Just as a preventative.


__________________________________________________
96 K1100LT 0302263
30,000 miles
    

6Back to top Go down   K1100lt running hot Empty Re: K1100lt running hot Thu May 05, 2022 5:04 am

moriarti

moriarti
Life time member
Life time member
Might be a good idea to do a cooling system flush ,and ditto on #4 with cleaning bugs out.
One other thing , Check the hose from RAD to HEADER TANK for blockage or kinks


__________________________________________________
1984 k100 rs red/black VIN  0004449
    

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