hi there, im new the forum, ive just bought a 1998 C180 sport auto. it has 125k on the clock but there is an issue with the running it doesnt rev over 4k and when you put foot down to drop the gear down it just dies no power atall just stays at 4k and then runs like a bag of sh*t misfiring until you turn engine off and back on then its ok again. . . . Ive disconected battery and checked spark plugs, i connected the battery back up and now it idles fine as soon as you put foot down it just doesnt respond atall, wont even drive as it splutters all over the place. Help please guys!