BMW K bikes (Bricks)

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1Back to top Go down    ignition issue on Fri Jul 08, 2016 8:32 am

andyldean

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Silver member
Hi all,

I have just stripped my K100 RT in the process of building a cafe racer.

Sent all the engine covers away for powder coat and set about the rebuild.

During the process I removed and replaced the crank sensor assembly.
now when i try to start the engine it doesnt start and i get a back fire like the timing is out.

I took pics of the sensor plate before I stripped, so I know I can be too far out, but could I be 180 deg out? the sensor plate only has 2 cutouts so could it be firing 180 deg out to the valve timing?

Thanks in advance

    

2Back to top Go down    Re: ignition issue on Fri Jul 08, 2016 11:32 pm

andyldean

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Managed to solve this one after a lot of thought.

After study I couldnt see how the timing could be 180 deg out by crank sensor.

But I had managed to switch the LT wires on the coils so I suspect the coils were firing out of sync there. Once I swapped those all was good and fires first push of the button.

    

3Back to top Go down    Re: ignition issue on Sat Jul 09, 2016 3:27 am

charlie99

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good solve andy

cheers


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

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

4Back to top Go down    Re: ignition issue on Sat Jul 09, 2016 4:52 am

Holister

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Good one Andy. More often than not its just something simple.

A good practice with the timing sensor plate is to scribe a mark across the edge before you take it out. Can'tgo wrong then.

Cheers


__________________________________________________
1988 K100RT VIN No. 0094680
1989 K100RT VIN No. 0097367 (naked)
1996 K1100RS VIN No. 0451808
Fuel: 95 Octane
Engine Oil:Nulon Full Synthetic 15W50
Gear Box Oil: Nulon Synthetic 75W90
    

5Back to top Go down    Re: ignition issue on Sun Jul 10, 2016 3:44 am

andyldean

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Yes I always take a couple of pics on my phone before I strip anything down.

Its a good reference point for a later problem.

Always find this forum a great place to solve problems as well Smile

    

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