1971 250/8 with 80 K miles. - Mercedes-Benz Forum

 
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post #1 of 5 (permalink) Old 04-01-2011, 11:56 PM Thread Starter
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Date registered: Mar 2011
Vehicle: 1971 250/8 sedan with 80 K miles. Driven only in Summer.
Location: Vancouver BC Canada
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1971 250/8 with 80 K miles.

Stored my Sedan for the last 8 years in my garage. Have trouble keeping it running. It starts out beautiful, first turn, but as soon as the chokes open the RPM drops and it dies. Put in new plugs ,new fuel pump, two new gasket kits
and two new jets [# 265 on MB printout ] Hope someone can advise what to do next. Cheers Harald.
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post #2 of 5 (permalink) Old 04-02-2011, 08:01 AM
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How old is the gas?
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post #3 of 5 (permalink) Old 04-02-2011, 01:25 PM Thread Starter
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71 250/8

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Originally Posted by Grubeguy View Post
How old is the gas?
Hello Grubeguy. I should have mentioned it, I did drain the gas as much as I could siphon out of it and refilled with super. I have the feeling it has something to do with the Air-Fuel mixture. Also installed a new fuel filter in front of the new pump, as the new ones do not have a build in filter. All the old mechanics I knew have gone to Valhalla I am sorry to say. Points , dwell-angle and timing was done before the layup. Have one more chance to phone the fellow who owns the UNIMOG Dealership here. The early Models had the same Engine in it. Take care of yourself. Harald.
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post #4 of 5 (permalink) Old 04-16-2011, 11:09 PM Thread Starter
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I Have decided ,after two weeks of trying to keep the 250/8 running for more than 3 min. to take the 2 carbs apart again and see if I have forgotten anything. Thanks to Grubeguys posting, I have downloaded the Manuel .They are listed on page 3 & 4 if anyone is looking for them. I also have ordered two new Gasket kits from our local MB dealer. They are still stocking the item locally Part # 000-586-01-07, about $ 38.00 each plus tax [ 12% here in Canada ] , just in case I wreck the old ones. Hope to have her running before all my hair falls out..
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post #5 of 5 (permalink) Old 08-28-2011, 11:24 PM Thread Starter
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I finally got the engine running as smooth as possible. My trouble was that I simply overlooked the most important part for a smooth idling engine. The tiny idle jet. After removing the top section of the carb, its easy to remove the beast by carefully pulling it out with some needle nose pliers. They were both plugged up in each carburetor. I soaked them overnight in lacquer thinner and then blew them out with compressed air. The only thing left now is the balancing as I don't have the tools for that. Harald.
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