I apologise if this is going to the same people on different forums, but I'm hoping someone may have experienced a similar problem and found a fix. The full thread can be found here: <!-- m --><a class="postlink" href="http://www.bmbikes.org.uk/Forum/viewtopic.php?f=13&t=15874" onclick="window.open(this.href);return false;">http://www.bmbikes.org.uk/Forum/viewtop ... 13&t=15874</a><!-- m -->
but to summarise: BMW K75RT 1993
The bike is regularly cutting out at exactly the same point on my commute to and from work. There are no warnings or symptoms but she'll run fine for the first mile or so, then cut out. It's a sudden cut out, not a gradual fade.
Once she's stopped, all the warning lights come on, the starter will turn, but she won't fire. The fuel pump is still operating as I turn the starter. At this stage I don't know if she's sparking or not.
After about 5 minutes, she'll start again, and then I can drive the remaining 20 odd mile without problem. Even if I stop at a garage or shop, there will be no further problems. The journey is a mixture of stop/start traffic, and open road. It only breaks down in the initial warming up period. She's been fine on longer 100+ mile journeys.
So far I have replaced battery, fuel pump, fuel filter, fuel sender, water temp sender, thermostat, coolant, FI relay, air filter and plugs.