w108,107 Parts Hoarder
Date registered: Jun 2010
Vehicle: 4Keep:450slc5.0cab 280sl5sp 280se4.5 500seAMG 2sell:500sl92 380se83 300se86 350sl4sp 75slc MorInSig
Location: Philadelphia Area
Mentioned: 29 Post(s)
Quoted: 1719 Post(s)
Pedal linkage didn't make any difference, but I think that I may have discovered that the small idle adjustment linkage needed some adjustment to allow some air through. I got by that problem and got the car running and revving.
I had messed with the high idle screw under the choke cover and had the car running at maybe 3000 rpm or something nuts. It took me a while to figure that one out.
Oh. At first the tank was out of gas. I put in maybe a gallon and burnt through it tonight. I learned how to quickly test if you are getting any fuel from the pump. Just unscrew the front fuel inlet and use the bump starter tool. The bump starter tool has actually made all this a lot easier. I guess it was a blessing that I fried that wire on the starter.
So I ran out if gas again after making tons of adjustments. But while adjusting things, I have to admit that I wasn't seeing a massive (or any?) effect from either:
1) the idle mixture screw. Even when I twisted it pretty close to closed, it didn't even begin to stumble. I think the exhaust was equally smokey under most circumstances. Perhaps I'm making adjustments too fast and need to slow down.
2) more importantly, the small idle adjustment linkage. I've adjusted both to the point where the linkage falls apart. I measured about 46 1/6th turns from as small as possible until it falls apart. I am now seeing very little effect when I do this. I wonder if I'm controlling the airflow with the chokes. Maybe that's something I'm doing wrong. I guess the only way that could happen is if the throttle plate is open (idle adjusted high) and choke is very tight (very much to the rich side). I wonder if I am doing that on the rear carb.
It was fun getting the car running again, and I am hoping that next time I put fuel in it and start it, it warms right up without issue. Then again, I'm wondering about that choke vs throttle on that back carb.