Hello, early today at pace in front of the traffic lights, km stand 170.000: – suddenly strong engine noise, similar to hole in the exhaust, unround run – yellow light (OBD-2) flashes, clear text “slower drive or turn up” – still 3.8 km slowly driven home – reading out the Volvo codes: none – reading out the OBD-2 codes: P0300 and P0304: misignitions on cylinder 4 – artificial cover on cylinder head dismantled – –> ignition coil cylinder 4 is pushed shaky upwards, oil has leaked – shut down rob the ignition coil – I can then simply pull out the ignition rinse broken at the shaft and the candle with the hand (!) up – The candle is crushed from below one side Since the plunger can never touch the candle directly, a valve would probably have to be torn off and laid between the plunger and candle, then the plunger with the help of the valve has pushed the candle together with the ignition coil up (?) Who has experienced similar experiences, who has another explanation? Thank you