Hello dear Mercedes friends ,need help again! Can you change a spark plug plug with the SLK 200 R170 without a compressor? Today when changing candles the first candle plug when you stand in front of the engine is canceled!? Now I don’t know if I only need the plug or the cable which goes to the ignition coil? If only the plug can be changed this is hard to connect the cable to the plug? The car runs (only 3 candles changed) because I have the candle plug he who broke out was not able to pull out (wanted) because I was afraid the cable was tearing off and then he doesn’t run anymore !? Need your help as the broken plug is certainly not good,or? gruss polloblackdragon