idling

I've got a C36 AMG, I tried a tank of the new Tesco 99 ron petrol, it has now got down to approx 1/4 of a tank and my car has started idling crap intermittently and on tickover, produces black smoke from the exhaust. Could this be something serious or should I just fill up with Shell Optimax to...

This is one for the engine guru's You might even scratch your head at this one? I have got a W203 C240 (2001 Model) The car has been suffering from erractic idling, although this is more noticable when the car is stationary and the drive position (Autobox) "its a if the engine is...

Hi all, Recently my 98' W210 started to idle roughly. It drives ok and the idling speed in gear is about 600rpm. I changed the spark plugs at 56K mile and now it has 102k mile on the clock. Is it time to change the spark plugs or there is something else? David.

Idling problems Hi there, This is my first post so hope you can help! This morning, I had problems with my A140 (1999). It just won't idle at all. When revved above about 1250rpm and during normal driving, it all seems ok but as soon as I stop and idle, it dies. It idles at about...

My c230k has a erratic idle when coming to a stop. It goes to almost zero and after a few sec goes back up to nrm. Sometimes the engine dies altogether. Pain in the *** when at junctions. Anyone have any ideals?