rough idle

Hi, I have a 190e that currently has a rough idle and lack of power intermittently that I'm going through and getting everything sorted before using it as a daily. So far I've: -Changed most parts on the ignition system spark test showed all good. -Compression test on all cylinders all tested...

Hello I've been trying to fix this for a year now and I've spent a lot of time searching and trying different things but none have helped so I figured I'd make a thread to get some help. It seems like the colder it is outside the harder it is to start it, it starts but I have to pump the gas to...

Hi all, I've had a look around but I can't find another problem quite like this. Every time I start her up the revs drop just below where they should sit for about 3-5 seconds which makes the car really rattle. It's fine after that. Any ideas? It's a 2004 with 121k on the clock. It had the...

new to the forum so please feel free to correct any breaches of etiquette around my post I am a bit stumped by this. When hot and in drive the engine sometimes develops a very rough idle and will stall, and is usually a bit tricky to restart. Occasionally difficult to start in very hot weather...

Hi all, First time poster, but found this forum thoroughly useful in the past. Thanks for all your help! I have owned my first Mercedes for a couple of months now and naturally im in love with it already. Just a niggle though- the idle is not perfectly smooth. It only jumps around about 20rmp...

Hello all. I have rough idling and occasional slow starting in my c270 cdi so I took your advice and replaced the o rings. I changed 4 of the o rings today, the one by the fuel filter, the rail and the 2 on the fuel pump. It seems to be slightly better now and there are no bubbles when it is...

Just bought a 2006 S320L CDi with 155000 on the clock. Engine seems to run a bit fast on idle and the it sounds a bit rough, not like the same engine in the CLS with similar mileage I have. MPG is as low as 19MPG up to 27MPG:(. Before I start prodding and undoing things, is there anything...

Hi everyone and thank you in advance for any advice offered. I own a 2006 CLS 320 (diesel) with some peculiar running issues. 1) Intermittently - On acceleration there is no acceleration for the first 1cm of throttle depression. Only a knocking noise from the engine. Pushing past this the car...

:confused: Hi there I have a C270 CDI W203 2003 model about 170000KM on the clock, i have been having a problem with rough idle when started but after moving it comes right but once i change the gear to park or reverse it starts again, also when i use the kickdown ( foot down) the car...