Lifetime Premium Member
Date registered: Oct 2002
Vehicle: 1967 250 SL, 1963 220Sb
Location: Los Angeles / Altadena
Mentioned: 3 Post(s)
Quoted: 126 Post(s)
You need to clean the fuel system back to front including the injectors. There are some useful videos on youtube, look for Mercedessource and the series on "resurrecting the beast" covers a lot of stuff relevant to the fuel system.
There are 30+ videos in that collection, about 1/3 of them are relevant to you.
There are SOOOOO many things you might need to look at, including fuel pressure from pump, crud in system, crud in fuel filters, dirty injectors, spark, timing, ...
Currently: 1967 250 SL, 1963 220Sb, 1965 300SE Lang, 1971 280SE parts car, 1972 Alfa GTV, 1965 Alfa Duetto, 1993 BMW R100R
Past: 1971 250 C, 1985 300 TD, 1967 250 S, 1968 280 S,1981 300 D, 1982 280CE, 3 Facel Vegas, Borgward Isabella Coupe, Alfa 2600 Sprint, Volvo P1900 (yes), numerous less interesting Volvos, ...