Would really appreciate any help with the problem of the very rough idle on my 1991 - 190E 2.6, It does not do it all of the time. It starts the very rough idle only at a stop light or as I should say a real low idle of 500 RPM or less. I can give it a little gas and the spitting and sputtering gets worse till it reaches about
800 - 1000RPM, and then its smooth as silk. As I say it only does this maybe once a week or so. I was told by the Mercedes Specialist to run some Marvels Mystery Oil in the gas tank, but it does not seem to help. They say it is a injector that is stopping up, not spraying the fuel right. I have done this with several fill ups. I have used 4 oz. of this per 10 gal. of fuel. Could it be water in the gas? I have also used other additives, Injector cleaners, Heet, Etc. Please Help. Ken- posted
17 years ago