Author Topic: Confused about the "Linkage Tour"...  (Read 1074 times)

teahead

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Re: Confused about the "Linkage Tour"...
« Reply #25 on: July 30, 2019, 04:48:27 »
OK, idle in N is about 750

Idle in 4...~600-650.

Just a hint of hesitation now.

Maybe I need to hook up my constant speed solenoid?
1970 280SL auto, AC - aka "Edelweiss"

ja17

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Re: Confused about the "Linkage Tour"...
« Reply #26 on: July 30, 2019, 15:57:26 »
Hesitation can be caused by low fuel pressure, is your main filter clean?
Joe Alexander
Blacklick, Ohio
1969 Dark Olive 280SL
2002 ML55 AMG (tow vehicle)
2002 SLK32 AMG (350 hp)
1963 404 Mercedes Unimog (Swedish Army)
1989 flu419 Mercedes Unimog (US Army)
1998 E430
1974 450SLC Rally
1965 220SE Finback

teahead

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Re: Confused about the "Linkage Tour"...
« Reply #27 on: July 30, 2019, 16:03:53 »
Hesitation can be caused by low fuel pressure, is your main filter clean?

Ya, brand new.

brand new plugs, brand new spark plug wires, cap/rotor/points changed.

I'm still confused also about the CSS (constant speed solenoid).  I have no wires going to it; just the wires that are on it.  So I can assume it's not doing anything?

With the car in gear, and barely running at 600 RPM, if I just give it a hair of gas pedal, she runs really good at 700.   Thinking of that CSS was hooked up, it'd give it just enough for the car to idle good at 700 RPM in gear.

Wonder why the factory installed the CSS and not hooked it up?  It's an automatic car for goodness sake.  Was the thinking that auto cars then, the dashpot was good enough and if a dealer wanted to add AC, they'd just hook up the CSS then?
1970 280SL auto, AC - aka "Edelweiss"

ja17

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Re: Confused about the "Linkage Tour"...
« Reply #28 on: July 30, 2019, 22:37:12 »
Adjust the dashpot so you get more rpms in gear.  With latter USA cars, when a dashpot was used, the CSS was wired to work only if the car was equipped with AC. If the car came fron the factory with no AC, then the CSS was installed but never wired.
Joe Alexander
Blacklick, Ohio
1969 Dark Olive 280SL
2002 ML55 AMG (tow vehicle)
2002 SLK32 AMG (350 hp)
1963 404 Mercedes Unimog (Swedish Army)
1989 flu419 Mercedes Unimog (US Army)
1998 E430
1974 450SLC Rally
1965 220SE Finback

teahead

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Re: Confused about the "Linkage Tour"...
« Reply #29 on: July 30, 2019, 22:39:06 »
Adjust the dashpot so you get more rpms in gear.  With latter USA cars, when a dashpot was used, the CSS was wired to work only if the car was equipped with AC. If the car came fron the factory with no AC, then the CSS was installed but never wired.

Ya, if I crank up the dashpot even more than I did, car runs rough.  This was after I turned the IP thumbscrew to the right I think, 4 clicks, to get it rich.
1970 280SL auto, AC - aka "Edelweiss"

ja17

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Re: Confused about the "Linkage Tour"...
« Reply #30 on: July 31, 2019, 02:21:41 »
Try another click or two richer.
Joe Alexander
Blacklick, Ohio
1969 Dark Olive 280SL
2002 ML55 AMG (tow vehicle)
2002 SLK32 AMG (350 hp)
1963 404 Mercedes Unimog (Swedish Army)
1989 flu419 Mercedes Unimog (US Army)
1998 E430
1974 450SLC Rally
1965 220SE Finback