mixture

Hi guys i want to adjust the idle mixture on my car, smells as though it's running a little rich. It's an 88 300ce. I'm a little confused though, the car has no O2 sensors that I can see. It has the diagnostic port with pins 2 and 3 that people use to adjust duty cycle but I also have a...

Hi Everyone, I bought a 56 plate C180 last week and the engine management light came on on Monday. Took it into a nearby Indie called MB tech in warrington to get it on a star machine and they advised that the error was showing too much air in the fuel mix. I didn't get a printout. :doh...

Hi all. My W123 is running really rich - spark plugs getting a coal like covering, strong smell of unburnt fuel etc. I was told the adjustment screw for the fuel was within the circled area highlighted below which would appear to make sense because of the RICH marking, but there is not one in...

Hi There, How to properly adjust fuel mixture in 116 engine using that allen bolt? did someone know how many turns?? as far i know clockwise make a richer mixture , but how to check is enough rich. do I need exhaust gas meter and if i need what should be readings. Thank you all in...

hi i want to check adjust the mixture settings on my 1990 230E using a gunson exhaust gas analyzer and was wondering what is the correct reading for this engine. a recent NCT ( MOT) shows a co reading of 0.13% at 800rpm thanks in-advance brendan

Hi all, been searching the web for someone who's seen this problem before. I was adjusting the air fuel mixture on my 300SE and the engine cut out when pushing the allen key down on the spring (adjusting screw on top of metering head). Now the engine will not start. I think I might have made the...

Had this code a couple of times recently - wondering whether anyone else has had this issue - local indie unsure what is causing this - pointing towards sensor failure, possibly - fuel economy still ok so doesnt seem to be any issues with misfiring or anything. any ideas?

I'm just about to try making my adjustment a bit leaner, as after replacing a lot of parts, i have noticed it's still running a bit rich - but am concerned about pushing the key in too far, which i understand is like falling into the abys. How far DOWN do i have to push to SAFELY engage the...

Hi I own an old 300E in Lebanon, which is a bit of a project which i have rescued. When i drove it away, i noticed it ran smooth when cold, but the moment it got up to operating temp, it became v sluggish and shook upon acceleration. So, i am in the process of looking at all the usual...

I'm trying to adjust the co using my tailpipe analyzer on my 560SEC. It's a non cat car and I've currently got it set at 1%. Does anyone know what the factory setting should be?

I have been told that I have a slight fracture in the 'Mixture Adaption Pipe' of my Mercedes 180K. The car has only 40,000 on the clock and was first registered on 10/8/04. What I am trying to find out is as follow:- Firstly could this be put down by Mercedes as 'fair wear and tear'. Is this...

Hi I hope someone can help me with this. My 1988 190 is running sweet, but is running too rich, causing the emmissions to show as around 7 ( whatever you call its ) rather than the 3.5 the MOT man requires. I am wasting petrol , which at current prices is just daft, and obviously killing the...

I have a 1973 350se and want to check/reset the fuel mixture. Any suggestions on how I can do this and where the adjustments can be made. Any suggestions on how to improve mpg.... :bannana: