This week I picked up my M3W at MMC after a rebuild with a new chassis (thanks MMC for this perfect service)
During this rebuild they also stripped the engine completely due to problems with the camshaft bearings.
Flushed the engine to get all metal particles out and installed new camshaft bearings.
When I picked up the car it was perfect weather so we went out for a ride in the Malvern Hills.
Wow, that felt great again !!
After 2 kilometers the engine stopped. Found out it was the inertia switch.
During our 70 kilometer ride we needed to stop 7 times to reset the inertia switch.
Before the enigen rebuild I never had problems with this switch during more as 30.000 kilometers.
So probably the rebuild engine gives now more of different vibrations which allow the switch to open.
Hope a new switch will solve this new problem.