92 500SL smell raw gas & idle black smoke - Mercedes-Benz Forum

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post #1 of 2 (permalink) Old 02-24-2012, 09:01 PM Thread Starter
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Date registered: Jun 2011
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92 500SL smell raw gas & idle black smoke

Thank's to any advice or direction, my 92 500SL when stopped @ light or idle smells like raw gas, and has black smoke out tail pipe, no engine codes, no Loss in power on parkways, jump on it @ 60 puff black smoke and runs great...
This car is very well kept , mobil one oil change every 3000 miles, clean K&N dual filters...
Help 2 mechanics look at it cannot find anything they smell the raw fuel & see the black smoke @ idle but notta
Thank You
Marc G
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post #2 of 2 (permalink) Old 02-24-2012, 09:06 PM
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Vehicle: 1974 450SL; 2009 CLS550
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Do a fuel pressure test and post some results. Your def running rich but why could be a number of reasons
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