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Old 10-20-2002, 02:25 PM
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Join Date: Oct 2002
Location: Oklahoma City
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Question RPM too high. How to adjust?

Just bought a 1985 280SL. It is a straight 6. The engine runs really high. Is there an adjustment to get it about 500-700 rpm lower? (runs about 1500 rpm and barely goes down when warm).
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Old 10-20-2002, 04:48 PM
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Join Date: Oct 2002
Location: Oklahoma City
Posts: 44
OK. Just figured it out. It was so easy!!!
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Old 10-20-2002, 06:17 PM
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Location: Dublin, CA
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what was it? [just curious]
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Old 10-20-2002, 07:13 PM
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Join Date: Oct 2002
Location: Oklahoma City
Posts: 44
Hi, as I had about 9 mercedes over the years I happened to find an old book that delt with this particular engine - straight 6. Behind the distributor housing (lower part of it) next to the engine there is a plactic screw with slot through it (looking at it from above all you see is a white circle with the slot for scredriver to be inserted in). Turning it clockwise you lower the rpm. Can you believe it, I have called mercedes benz dealer on thursday and they made it sound like its an incredibly complicated task requiring at least a day in the shop - talking in a $150 range. They were too busy before the weekend so I was to call them tomorrow!!!
Took me less than a minute once I knew what to look for.
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