Re: No spark

[Mick <bmwmick@xxxxxxxxxxx>]

At 08:34 PM 8/14/2006 -0400, you wrote:
>     *  Washed my 1998 R11RT Sunday and let dry for an hour.
>     * Started the bike, ran fine for a few minutes and than died.
>     * Would not restart.
>     * Determined that there was no spark.
>     * Disassembled the bike and tested the Hall generator with a 12v LED
>       and a regulated 12V supply. Worked fine at both room temperature
>       and 145C.
>     * Checked the primary and secondary resistance of the coil. The
>       resistance between the primary leads is 0.4 ohms which compares
>       favorably to that specified in Clymers. The resistance between the
>       secondary leads is 7548 ohms which is very different than the 1300
>       ohms specified in Clymers. However, I know the coil was changed in
>       1998 so before replacing it, I wanted to know if the
>       specifications have changed.
>     * One strange effect was that there would sometimes be a buzzing
>       sound from somewhere near the airbox when the Hall plug was
>       connected and the power was on. On these occasions, the tach
>       needle would jump around a bit. It was almost like the Hall unit
>       was sending a rapid series of pulses to the computer for spark
>       generation.
>     * Note, there was NO water in the area of the Hall unit nor in the
>       area of the coil. The spark plug area (around the connectors) was
>       wet but this has always been the case after washing the bike.
>     * The Hall unit was covered in a thin black film and the whole area
>       was filthy. I am assuming that is is degradation products from the
>       alternator belt.
>
>
>Thanks in advance!

Bill,
   Your HES has failed.  The coil measurements are good.
Even the factory manual had it wrong. 0.5 and 7.5K are good
values.

Mick
Tucson

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