First let me apologize for such a long post. Have owned a 1966 230SL for 15 years and it has been a great car. Restored it once and now have approx. 40,000 miles on that restoration. Bought the car with 150,000 miles on it. Retiring in 3 years and will restore again. So started having rough idle in gear and at stops with car in gear. Went through every step I can think of to rectify. Set timing at 6 BTDC and I have a Petronix setup. If anyone can tell me how to set the dwell on that I would appreciate it. After timing I went through the linkage exactly as described in this forum and improved the idle somewhat but still the car was very boggy at low range and at 5,000 RPM it acted like it was starving for fuel. Checked all my fuel lines and removed the fuel pump. All was good. When I checked the amount of fuel in the return line under the hood I only got 750 ML. I read it is supposed to be 1 liter. Is this enough to cause my problem? Since I have at least 20 hours invested and am somewhat aggravated I think I'm buying a new/rebuilt fuel pump. Can someone also tell me where I could find one at a decent price. Also I went through the entire FI pump setup as described in this forum and really saw little results with adjusting the idle control. I hope this is related to the fuel pump. As you can see I'm looking for suggestions as I' m frustrated with not being able to find the issue. Also the car runs fine at low temperature and I did adjust the WRD. That also helped a little but after running at 60-70 miles an hour for 10 minutes the problem returned. It appears that the car gets to about 170 degrees and the starts starving for fuel. Between 1500-4000 rpm under load it's fine. HELP!
