BMW K bikes (Bricks)

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1Back to top Go down   K100 having an issue Empty K100 having an issue Tue May 06, 2014 6:01 pm

MikeisonTV

MikeisonTV
Silver member
Silver member
So I've been riding her daily about 80 miles round trip for the last month problem free. Yesterday morning I fire her up and get ready to leave after a 5 min idle and she dies. After a few attempts I switch bikes and leave.

I have the day off so I started trouble shooting. The first problem....the positive battery thermal cable was loose. I tighten it and throw on a charger as she was struggling. After 5 min I try to start and boom all is well. I let her idle for 5 then remove the charger and she instantly starts slowly loosing power until death.

My first thought is alternator. But there's also a clicking that sounds like a turn signal coming from the "relay box" under the tank. It does this when the key is turned in the on position if the bike is off AFTER I press the kill switch at the end of a ride. It's been doing that for months on and off

You guys have any ideas before I start the alternator removal for test process?


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Yep! I'm flipping through the air....that ain't good.
    

2Back to top Go down   K100 having an issue Empty Re: K100 having an issue Tue May 06, 2014 6:18 pm

duck

duck
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Why are you letting it idle for five minutes? All you're doing is fouling the spark plugs.

From the 1995 K75 Rider Manual:

K100 having an issue Kstart10


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Current stable:
86 Custom K100 (standard fairing, K75 Belly pan, Ceramic chromed engine covers, paralever)
K75 Frankenbrick (Paralever, K11 front end, hybrid ABS, K1100RS fairing, radial tires)
86 K75C Turbo w/ paralever
94 K1100RS
93 K1100LT (x2)
91 K1
93 K75S (K11 front end)
91 K75S (K1 front end)
14 Yamaha WR250R
98 Taxi Cab K1200RS
14 K1600GT
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3Back to top Go down   K100 having an issue Empty Re: K100 having an issue Tue May 06, 2014 6:33 pm

92KK 84WW Olaf

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If you start a K and let it idle you will drain the battery. Unless you rev it to 2,000rpm to get the charge light to go out and enable the alternator to charge the battery. If you simply start and leave it tick over it will draw down current from the battery and also soot up the spark plugs.

If the battery terminal was loose is it possible you have some bad earths?

If you can, use a meter to check the alternator is not actually charging the battery. A bad connection can prevent it charging the battery. Also get the battery checked and eliminate that as a potential problem.


__________________________________________________
1992 K100LT 0193214 Bertha Blue 101,000 miles
1984 K100RT 0022575 Brutus Baja Red 578 bought 36,000 now 89,150 miles
1997 K1100LT 0188024 Wotan Mystic Red 689 58,645 now 106,950 miles Deceased.
1983 K100RS 0011171 Fricka 606 Alaska Blue 29,495 miles Damn K Pox Its a Bat outta Hell Now 37,190 miles. 
1996 K1100LT 0233004 Lohengrin Mystic Red 38,000 miles currently 42,640 miles.

Past:
1968 Yamaha 80 YG1
1971 Yamaha 125 YAS-1
1968 Honda 125 SS
1970 Honda CD 175
1973 Honda CB500-4
Honda CX 500
    

4Back to top Go down   K100 having an issue Empty Re: K100 having an issue Tue May 06, 2014 7:40 pm

MikeisonTV

MikeisonTV
Silver member
Silver member
Thank you guys! Ill let u know what I come up with.

Had no idea on the idle


__________________________________________________
Yep! I'm flipping through the air....that ain't good.
    

5Back to top Go down   K100 having an issue Empty Re: K100 having an issue Tue May 06, 2014 7:53 pm

92KK 84WW Olaf

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Life time member
Life time member
Also, never disconnect the battery while the engine is running. It destroys some of the electrics.


__________________________________________________
1992 K100LT 0193214 Bertha Blue 101,000 miles
1984 K100RT 0022575 Brutus Baja Red 578 bought 36,000 now 89,150 miles
1997 K1100LT 0188024 Wotan Mystic Red 689 58,645 now 106,950 miles Deceased.
1983 K100RS 0011171 Fricka 606 Alaska Blue 29,495 miles Damn K Pox Its a Bat outta Hell Now 37,190 miles. 
1996 K1100LT 0233004 Lohengrin Mystic Red 38,000 miles currently 42,640 miles.

Past:
1968 Yamaha 80 YG1
1971 Yamaha 125 YAS-1
1968 Honda 125 SS
1970 Honda CD 175
1973 Honda CB500-4
Honda CX 500
    

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