I was able to start the car this morning and let it run for 10 minutes hoping that would get some air out of the fuel system. That was a suggestion in the instructions from the fuel distributor rebuilder.
After a few minutes I saw there was an excessive amount of unburnt gas coming out of the exhaust and under the exhaust itself. When I tried to accelerate it immediately stalled out. Being a safety issue are there any adjustments to correct that or should I have to get it towed to a shop? The gas did a job on my new sealed driveway in a short period of time.....it was that much getting through. Bob -----Original Message----- From: Hendrik and Fay <heni...@gmail.com> To: Mercedes Discussion List <mercedes@okiebenz.com> Sent: Sat, Jan 11, 2014 11:19 pm Subject: Re: [MBZ] 1990 MB 300E - Replaced Fuel Distributor - Running rough...help! OK I am not sure what differences there are between the US and Euro model 300E, we got the Euro version here, however I don't think there any 'major' differences. The US and Japan 103.983 engines got a MAS relay for some reason, apparently pin 1 is battery, pin 2 is feed to fuel pumps http://www.autolib.diakom.ru/CAR/Mercedes-Benz/1993/190E/SYSTEM%20WIRING%20DIAGRAMS/4410.pdf Lots of stuff here http://w124-zone.com/downloads/MB%20CD/W124/Index/103index.html A new fuel distributor may well need adjusting, which is done with an allen key down the top but should really be be done whilst reading the lambda codes. http://w124-zone.com/downloads/MB%20CD/W124/w124CD1/Program/Engine/103/07.3-2053.pdf Have you checked your electrical bits? The 103 is well known for having problems with the dizzy because of it's location. My advice to people generally is that if you don't have the tools or know how to diagnose the system, take it to a good shop which knows the Bosch systems and has experience. Money spent on replacing parts which may not need replacing is better spend on good diagnoses. Ohh and another clue, a KE jetronic system will generally run, even without EHA valve, O2 sensor, coolant temp sender (these bits where added to turn K into KE), this is why MB stuck with it for so long, very reliable system but not that efficient. The addition of the O2 sensor (plus bits) helped to make it a little more efficient, K jet is supposed to be tuned every service. Hendrik whose 103.983 is a little rough On 12/01/14 13:49, Robert Koziak wrote: > Hi Guys, > > > I still have an issue with rough idle and hesitation during acceleration on my 1990 300E w/90K that I haven't been able to fix. So far I replaced the fuel filter, fuel pumps, oxygen sensor, coolant temperature sensor,and EHA valve.......problem still there! > > > My latest part swap is a rebuilt fuel distributor. After installing it a few hours ago the car now runs very rough and stalls. I read that there is some adjustments that have to be done on fuel distributors. I don't have any special tools so I might have to take the car to a shop that deals in older Mercedes. I can't seem to get it to run enough to get it to the shop. > > > Does anyone know how to jump or bridge the relay to adjust the fuel flow to the fuel distributor? Books say to jump pins #7 & 8 on the fuel pump relay but this car does not have one, it has a MAS relay. > > > Any help or suggestions to get the car going would be greatly appreciated. I would hate to put back the old distributor to get it to a shop. > > > Thanks, > > > Bob _______________________________________ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com _______________________________________ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
