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#1
11-11-2007, 05:42 AM
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Sticking throttle
Hi
I have a beautiful w123 230 1976 (115 engine), automatic, stromberg 175CD carb. (300 000 km), Carb rebuild 6-8 years ago (70 000km ago) The throttle mechanism is not falling back to rest on the idle speed screw - but will go back if pushed. The governer (modulator) is not causing this as it is right out of the way. It is idling at 850 rpm when pushed down but about 1000 if not pushed (in neutral). Is there a common cause for this? Can anyone point me in the right direction? Any help would be appreciated ... Col 
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#2
11-12-2007, 04:06 PM
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Could be a...
worn out throttle return spring. 32 years old, and many of cycles of motion.
Or, see my post about re-bushing the bellcrank shaft. My plastic bushings were gone.
__________________
1970 280S M130 engine- good runner 1971 250 M130 engine- #2 rod bearing, gone 1971 280SE (blown engine,parts car) 1977 German 280S W116-only 33 years old
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#4
11-13-2007, 07:02 AM
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Lube the linkage pivot points with ATF.
Perhaps your cumulative resistance in the linkage is greater than your spring.
Lube it, and if you still have a problem, add another spring. Jim
__________________
14 E250 BlueTEC black. 45k miles 95 E320 Cabriolet Emerald green 66k miles 94 E320 Cabriolet Emerald green 152k miles 85 300TD 4 spd man, euro bumpers and lights, 15" Pentas dark blue 274k miles
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