If it is just chugging I guess the engine isn’t firing. I would first check if you have spark. BDP sensor can be the problem, the ignition coil, the electronic breaker module, or the HT wires or any of the involved LT wiring. Or perhaps just the plugs themselves. Have you checked compression?
Reply To: 1989 780 Turbo for saleJohan Vlagsma2016-12-16T04:49:12-06:00