Hello first… would like to report me again with my meanwhile over 4 weeks silent Sierra 2 ltr DOHC 92’er Bj.. Had at that time already received some tips here, what it could be, which he no longer starts. Did this as far as possible also worked off, but so far with no success! Perhaps the following features give now one or other still thought-provoking suggestions which could be helpful to me. To the starting features: ignition sparks on all 4 ZK available, Kr aftstoff vorhanden, OT-Geber nevertheless renewed (precautionary), error memory read out, however no error filed.Both plugs under the suction bridge cleaned and processed with contact spray.Are there anyone who has already experienced such a phenomenon, and then the box got to run again?????? Am grateful for all tips.