BMW K bikes (Bricks)

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1Back to top Go down   Odd wire where do you go. Empty Odd wire where do you go. Wed Dec 08, 2010 5:30 pm

jwh01

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Hi All,
I have just got hold of a BMW k1100lt Trike (Ex Police bike) which will not start. the lights all work other then indicators which will not turn off once turned on. (happens to both). Starter motor spins and Fuel pump kicks in when the starter is pressed, but machine does not fire up. Battery is showing 12.78 volts. Where should i be looking i am thinking it could be the sprang cluch but looking for other options before going there.
Also i have a heavy duty wire coming off the engine housing that does not go anywhere, any clue ?
i tried to add photo but could not do it. the wire comes from the Bolt that holds the engine to frame on the left side (spark plug side). its the forward bolt just behind the radiator. hope thats enough info. thanks

    

2Back to top Go down   Odd wire where do you go. Empty Re: Odd wire where do you go. Wed Dec 08, 2010 6:00 pm

Crazy Frog

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JWh01,

Because the transformation from a 2 wheels to a trike, it could be very difficult to know where this wire is going. I would think that this is a ground, but...
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When you get the following screen, copy the image link and insert it to your post:
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Odd wire where do you go. Frog15Odd wire where do you go. Logo2101986 k75, 1985 K100rt, 1985 K100rt/EML GT2 sidecar, 1999 K1200lt/Hannigan Astro Sport sidecar.
    

3Back to top Go down   Odd wire where do you go. Empty Re: Odd wire where do you go. Wed Dec 08, 2010 6:25 pm

jwh01

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4Back to top Go down   Odd wire where do you go. Empty Re: Odd wire where do you go. Wed Dec 08, 2010 6:28 pm

jwh01

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Thanks crazy frog. any idea about the starting problem too.

    

5Back to top Go down   Odd wire where do you go. Empty Re: Odd wire where do you go. Wed Dec 08, 2010 6:31 pm

Crazy Frog

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I would think that this is the replacement for the ground wire going from the battery to the gear box.
What kind of connection do you have at the end of this wire?
The ground is very important on these bikes. This wire is the first issue to be dealt with.


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Odd wire where do you go. Frog15Odd wire where do you go. Logo2101986 k75, 1985 K100rt, 1985 K100rt/EML GT2 sidecar, 1999 K1200lt/Hannigan Astro Sport sidecar.
    

6Back to top Go down   Odd wire where do you go. Empty Re: Odd wire where do you go. Wed Dec 08, 2010 6:39 pm

jwh01

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it goes in the direction of the arrow to where the tax disk is. but does not connect to anything at that end. Just laying their. it could reach the starter motor. not sure if it would reach battery as its on other side of trike

John

    

7Back to top Go down   Odd wire where do you go. Empty Re: Odd wire where do you go. Wed Dec 08, 2010 6:44 pm

jwh01

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Odd wire where do you go. Wire_210

    

8Back to top Go down   Odd wire where do you go. Empty Re: Odd wire where do you go. Wed Dec 08, 2010 6:46 pm

jwh01

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the starter, abs, battery have been removed in that pic

    

9Back to top Go down   Odd wire where do you go. Empty Re: Odd wire where do you go. Wed Dec 08, 2010 6:55 pm

Crazy Frog

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It looks like to be a ground wire.
Where is the ground from the battery going?


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Odd wire where do you go. Frog15Odd wire where do you go. Logo2101986 k75, 1985 K100rt, 1985 K100rt/EML GT2 sidecar, 1999 K1200lt/Hannigan Astro Sport sidecar.
    

10Back to top Go down   Odd wire where do you go. Empty Re: Odd wire where do you go. Wed Dec 08, 2010 6:59 pm

jwh01

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That goes to the starter motor. one of the two bolts that hold it in. you can see it in the photo laying on the clutch box with red tape around it. (just below where starter motor would be.

    

11Back to top Go down   Odd wire where do you go. Empty Re: Odd wire where do you go. Wed Dec 08, 2010 7:05 pm

Crazy Frog

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No, impossible! the wire with the red tape cannot be the ground if it's attached to the starter. This wire must be going to the starter relay (under the gas tank).
Please follow the wire (with the red tape) and report where is the end point.


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Odd wire where do you go. Frog15Odd wire where do you go. Logo2101986 k75, 1985 K100rt, 1985 K100rt/EML GT2 sidecar, 1999 K1200lt/Hannigan Astro Sport sidecar.
    

12Back to top Go down   Odd wire where do you go. Empty Re: Odd wire where do you go. Wed Dec 08, 2010 7:27 pm

jwh01

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Odd wire where do you go. Starte10

    

13Back to top Go down   Odd wire where do you go. Empty Re: Odd wire where do you go. Wed Dec 08, 2010 7:29 pm

jwh01

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That is where it was connected the other end went to the negitive on the battery.

    

14Back to top Go down   Odd wire where do you go. Empty Re: Odd wire where do you go. Wed Dec 08, 2010 8:25 pm

Crazy Frog

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The wire from the negative of the battery is going to the leg of the starter.
The wire from the starter relay goes to the the top of the starter.
The big wire from the front of the engine must go where the original ground was going (on the side of the gear box) or maybe on the other leg of the starter.
This wire connection is not essential, but it's great to have it as an extra ground. The ground is very critical on these bikes.


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Odd wire where do you go. Frog15Odd wire where do you go. Logo2101986 k75, 1985 K100rt, 1985 K100rt/EML GT2 sidecar, 1999 K1200lt/Hannigan Astro Sport sidecar.
    

15Back to top Go down   Odd wire where do you go. Empty Re: Odd wire where do you go. Wed Dec 08, 2010 8:54 pm

jwh01

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thanks mate i will gound the other end at some point will ground it to the other leg of the starter. any ideas around why she may not be firing up.

    

16Back to top Go down   Odd wire where do you go. Empty Re: Odd wire where do you go. Wed Dec 08, 2010 8:57 pm

jwh01

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as one end was ground to engine i could not think what it sould be grounding

    

17Back to top Go down   Odd wire where do you go. Empty Re: Odd wire where do you go. Thu Dec 09, 2010 6:07 am

Crazy Frog

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[quote="jStarter motor spins and Fuel pump kicks in when the starter is pressed, but machine does not fire up[/quote]

Is the engine turning or is the starter just spinning freely?


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Odd wire where do you go. Frog15Odd wire where do you go. Logo2101986 k75, 1985 K100rt, 1985 K100rt/EML GT2 sidecar, 1999 K1200lt/Hannigan Astro Sport sidecar.
    

18Back to top Go down   Odd wire where do you go. Empty Re: Odd wire where do you go. Thu Dec 09, 2010 9:18 am

japuentes

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@Crazy Frog wrote:The wire from the negative of the battery is going to the leg of the starter.

Ok I didn´t know that!
Thanks
JAP

    

19Back to top Go down   Odd wire where do you go. Empty Re: Odd wire where do you go. Thu Dec 09, 2010 9:35 am

Crazy Frog

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This is only on his bike (modified as a trike).
Yours is going to the side of the transmission.


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Odd wire where do you go. Frog15Odd wire where do you go. Logo2101986 k75, 1985 K100rt, 1985 K100rt/EML GT2 sidecar, 1999 K1200lt/Hannigan Astro Sport sidecar.
    

20Back to top Go down   Odd wire where do you go. Empty Re: Odd wire where do you go. Thu Dec 09, 2010 11:51 am

japuentes

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Good, I was on my way to change it.
Thanks
JAP

    

21Back to top Go down   Odd wire where do you go. Empty Re: Odd wire where do you go. Thu Dec 09, 2010 12:47 pm

jwh01

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I think the starter is spinning freely. not sure how i would know if its turning the engine unless you can give me a heads up on some way of checking.

    

22Back to top Go down   Odd wire where do you go. Empty Re: Odd wire where do you go. Fri Dec 10, 2010 1:41 am

K-BIKE

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Is the engine turning over? You said the starter runs but not if the engine turns over. If it does turn over forget the sprag clutch that is fine, since having a faulty sprag clutch means no engine turn over, the starter just whirs.

So have you gone through the step by step troubleshooting guide?
Do that and let us know what you find.
Regards,
K-BIKE

    

23Back to top Go down   Odd wire where do you go. Empty Re: Odd wire where do you go. Fri Dec 10, 2010 5:09 am

jwh01

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Hi K-Bike
The starter just whirs as far as i can tell. Is the Step by step troubleshooting guide part of the forum, in a book. I have looked about the forum but cant see anything named this way.
Thanks John

    

24Back to top Go down   Odd wire where do you go. Empty Re: Odd wire where do you go. Fri Dec 10, 2010 6:26 am

Crazy Frog

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Click here to see the EFI troubleshooting page .

A lot of information are in the download section too. (click the home button on the top menu, then scroll down to the bottom of the page to see the download section).


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Odd wire where do you go. Frog15Odd wire where do you go. Logo2101986 k75, 1985 K100rt, 1985 K100rt/EML GT2 sidecar, 1999 K1200lt/Hannigan Astro Sport sidecar.
    

25Back to top Go down   Odd wire where do you go. Empty Re: Odd wire where do you go. Fri Dec 10, 2010 12:44 pm

jwh01

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Thanks for the info I will run throgh the guide over the weekend. looked at download section crazy frog lots of good stuff usefull when i have found the problem and need the fix. Happy days that i find the problem lol.

Thanks john.

    

26Back to top Go down   Odd wire where do you go. Empty Re: Odd wire where do you go. Tue Jan 25, 2011 8:17 am

barryt

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If there is just a high pitch spinning sound when trying to start and no discernable "shaking" or exhaust "puffs" while pushing the starter, its your sprag clutch...needs cleaning, de-gumming....Wink

    

27Back to top Go down   Odd wire where do you go. Empty Re: Odd wire where do you go. Wed Jan 26, 2011 2:58 am

Ajays

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Yes,
If the starter motor just spins without actually engaging and turning the engine, then it will be your sprag clutch gummed up. Easy way is to flush it by changing your oil to sythetic or use flushing oil and give it a good run. I had the same problem with one of my bikes (bought cheap for that reason). I bump started mine and gave it a hot run. solved it OK and running fine since.
Can't you get a tow to start the trike?
Ajays


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AJAYS
    

28Back to top Go down   Odd wire where do you go. Empty Re: Odd wire where do you go. Wed Feb 02, 2011 1:00 am

viney

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mate you have probably solved the problem by now but just in case
do the lights go dim on the instrument cluster when you press the starter button?
if so then you need to clean the contacts on your ignition barrell and this should solve your problem
if not then grab a test light and check all of your circuits

    

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