New updates:
Emptied a bottle of red line fuel system cleaner before I filled the tank (fuel consumption on last tank was 13,5 mpg) Won?t hurt since the injectorns never been cleaned and balanced, wich was impossible to get done in Sweden.
Also sprayed a can of carb cleaner over the vacuum hoses and the intake, no change from the slightly rough idle...
Tried to pull the engine codes, shorted TE1 and T1 connectors and turned the key to "ON" and the engine light just kept flashing with a rather fast frequency and the same intervall...does this mean OK?
But when I pulled the spark plug wires, no. 4?s wire came loose from the connecting metal. Could be that there?s been a bad connection on that since I replaced them last summer. Gonna buy a new set tomorrow along with new plugs, also inspected the distributor cap and rotor, as new.