My M3 has been in storage for the last 3+ yrs and was to be started everymonth varing rpm until temp was hot. Prior to going into storage the injectors were taken out and cleaned and new plug put in. I just got back to it and started and drove the car--it ran terribly on 3 cylinders or less. After driving it a short distance the next day I noticed i smoke was coming from the aft end in back/under the motor. No oil on ground. Suggestion on what to look at first to get it to run like it should.
29K Engine running poorly after storage on 1990 BMW M3
Did you put any gas stablizer in the tank? If not you have bad gas