WIS document for spark plug replacement M271 engine
03-22-2011, 06:04 PM
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2007 C230SS; 2014 ML350 BT
WIS document for spark plug replacement M271 engine
Spark plug replacement document for Boom Vang.
Last edited by johnand; 03-22-2011 at 06:36 PM. Reason: Forgot attachment
04-09-2011, 04:56 PM
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2005 SL500
Just changed my spark plugs, using NGK Iridium instead of Bosch. I found a little oil on plugs 1 and 2. There was a little carbon buildup on each plug, and my car has 90k miles on it, which I purchased with 88k on the odometer, so that tells me the plugs weren't changed at 75k per service manual. Car runs great now. VERY EASY JOB!
