Hello, my 850er (2.0 ltr. 126 PS petroler, 455,000 km) always jumped on hit. Since a few days only on the second time, today only the third time. When it first runs, it runs great as ever. I have already checked the following: petrol pump (2008 new) runs a short run after ignition (back obeys); front (early obeys) it gurgles briefly, relay (2008 new) switches audible. Contact plate ignition lock could it be (2008 a used part installed)?! Oh yes, all ignition cables new 2012, ignition distributor, dealer, finger 2011 new. Does anyone know what that can be? Is it a typical fault profile? Thank you Papi