250C - Mercedes-Benz Forum

 
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post #1 of 3 (permalink) Old 12-11-2013, 08:21 AM Thread Starter
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Date registered: Dec 2013
Vehicle: 1970 250C
Location: New Castle Indiana 47362
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(Thread Starter)
Question 250C

My 1970 250C idles smoothly in Park and Neutral---When I put it in Drive, it idles rough.---Help Thanks
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post #2 of 3 (permalink) Old 12-11-2013, 08:59 AM
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Date registered: Nov 2008
Vehicle: 1981 300TD 310k--1966 230 165k--1970 280se 172k
Location: Ohio City, Ohio
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Time for a tune-up. Start by checking the timing, point gap, plugs, cables, rotor, cap, condenser.

Then adjust the carbs. Idle rpm adjust, mixture adjust, and balance. Might be time for new fuel and air filters.

1981 300TD--310k miles
1970 280sel--172k miles
1966 230--162k miles
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post #3 of 3 (permalink) Old 12-11-2013, 12:06 PM
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Date registered: Jul 2012
Vehicle: 1967 250S, twin Weber carbs, automatic trans, power windows, A/C, R134a conversion
Location: Texas
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Sounds like you have a vacuum leak somewhere
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