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#1
05-06-2010, 09:45 AM
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'72 250C stumbles/smokes, why?
Hi, recently my 250C has started to stumble and smoke at idle, after I get it up to speed sometime the stumble will go away or is less noticeable, other times you can still tell its there. What would cause this? I originally thought maybe the spark plugs needed to be replaced, but why the smoke? Could it be the timing?
I just had it driving smoothly at 70mph and pull in the drive and no stumble, pulled in the garage and put into park....30 seconds later the car began to stumble and smoke. Any help is greatly appreciated, thanks! -Curt
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 '66 250S (SOLD) '72 250C (SOLD) '92 190E 2.3 (SOLD) '02 C320 Wagon (SOLD) '04 S40 (SOLD) '99 535i (Euro Spec) 
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#3
05-06-2010, 11:22 AM
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Black smoke? If so, you are running rich.
Blue? oil problem. White? head gasket. Pull your plugs and read them. Jim
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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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#4
05-07-2010, 10:00 PM
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Why does it happen intermittantly though? I dont think its the head gasket for that reason.
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'66 250S (SOLD) '72 250C (SOLD) '92 190E 2.3 (SOLD) '02 C320 Wagon (SOLD) '04 S40 (SOLD) '99 535i (Euro Spec)
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