Mercedes-Benz Forum - View Single Post - Slight idle vibration (intermittent)
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post #5 of (permalink) Old 02-24-2019, 09:15 PM
4DGeorge
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Date registered: Jan 2018
Vehicle: 2006 S500 (W220, Designo Espresso, AMG Sport, LWB)
Location: Houston, Texas, USA
Posts: 312
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If you've not had the fuel system flushed, try a serving of BG's 44K fuel cleaner. When I bought my '06 S500 year ago, it would occasionally miss during cold starts and when idling. After two tank refills using BG's 44K mine began running a lot smoother.
I went several tank refills without using it and it began running a little rough again. Now I use it every third or fourth fill up to keep it running smooth.
I've been a fan of their products since 1988!
https://www.bgprod.com/catalog/gasol.../#bg-product-3
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