BMW K bikes (Bricks)

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kcdman

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Hi all.
I have an issue that's stumped me.
'85 K100C
I push start button and get crank for ~1second, then nothing for about the same maybe 2 seconds, hold the button and it repeats indefinitely. (not really, haven't melted anything yet)
Lights come on, fuel pump runs, starter will run if I jump the relay.
Cleaned the start button innards, seemed fine but shined it up anyway.
Cleaned the starter, no help.

It did this a few times in the past, but recovered on it's own and ran as expected for months. Until- dun dun dun da.



any ECM or IC experiences out there?

Thanks for any advice.



Last edited by kcdman on Mon Jan 15, 2018 5:34 am; edited 1 time in total (Reason for editing : incomplete information)

    

Point-Seven-five

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Since there are several ECU configurations used, it would be helpful if you list the year and model you have. Also, if it has been cafe'd.


__________________________________________________
Present:
1994 K75RT
1994 K75S
1992 K100RS

Past:
1982 Honda FT500
1979 Honda XR185
1977 Honda XL125
1974 Honda XL125
1972 OSSA Pioneer 250
1968 Kawasaki 175
    

charlie99

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wow ...flat battery and some wiring and support fuses poped ?

as above, more details please


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cheezy grin whilst riding, kinda bloke ....oh the joy !!!! ...... ( brick aviator )

'86 K100 RT..#0090401 ..."Gerty" ( Gertrude Von Clickandshift ) --------O%O
    

Inge K.

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@kcdman wrote:Hi all.
I push start button and get crank for ~1second, then nothing for about the same, hold the button and it repeats indefinitely.

That is a symptom of a bad hall effect sensor.


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Inge K.
K100RS -86. (first owner), K1100LTSE -94.
    

kcdman

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Wow, that was fast.
So, I edited original post- '85 bare no modifications.
Replaced the battery, and have not run it down working the starter since this thing began (no hotted up wiring).

    

6Back to top Go down    Thank you on Sat Feb 03, 2018 8:27 pm

kcdman

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It was HES after all.
Ebay and tiny bit of wrenching and .......
she's off


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'85 k100c
    

Inge K.

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Inge K.
K100RS -86. (first owner), K1100LTSE -94.
    

charlie99

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__________________________________________________
cheezy grin whilst riding, kinda bloke ....oh the joy !!!! ...... ( brick aviator )

'86 K100 RT..#0090401 ..."Gerty" ( Gertrude Von Clickandshift ) --------O%O
    

9Back to top Go down    thanks everyone on Mon Feb 12, 2018 11:57 pm

kcdman

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I'm up now but have fuel issues (I think). The collective has been invaluable and I'm grateful for the input. Now I'm off to sift through the forum for my throttle response with no idle solution.
Ride safe, I;ll see you on another thread. Smile


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'85 k100c
    

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